CN104072025B - Cold mixing cold-application modified emulsifying asphalt compound and preparation of construction thereof and method - Google Patents

Abstract

The invention belongs to the technical field of road paving materials and their processing and preparation, and in particular relates to a cold-mixed cold-paved modified emulsified asphalt mixture and construction equipment and methods thereof. The cold-mix and cold-paving modified emulsified asphalt mixture provided by the present invention includes the following raw materials: graded crushed stone, SBS modified emulsified asphalt, filler, water, additives, which can be used not only in the field of preventive maintenance of roads, but also as The construction process of the structural layer of the road does not need to consume a lot of energy, and there is no exhaust gas and smoke discharge. It is a resource-saving and environment-friendly cold-mixed cold-paved modified emulsified asphalt mixture. Utilizing the construction equipment for cold-mixing and cold-paving modified emulsified asphalt mixture provided by the present invention and the construction method for cold-mixing and cold-paving modified emulsified asphalt mixture can make the modified emulsified asphalt mixture of the present invention play a better effect .

Description

Cold-mixed cold-paved modified emulsified asphalt mixture and its construction equipment and method

technical field

The invention belongs to the technical field of road paving materials and their processing and preparation, and in particular relates to a cold-mixed cold-paved modified emulsified asphalt mixture and construction equipment and methods thereof.

Background technique

At present, the asphalt mixture used in road engineering can be divided into three types according to the mixing construction temperature: hot mix asphalt mixture, warm mix asphalt mixture and cold mix asphalt mixture. Among them, hot-mix asphalt mixture is the most widely used and has good road performance. However, heating the asphalt and mineral materials from room temperature to about 160°C for mixing and transporting them to the construction site for paving and rolling not only consumes a lot of energy but also emits A large amount of exhaust gas and smoke will seriously affect the environment, and it is not suitable for application in remote areas. The performance of warm mix asphalt mixture is similar to that of hot mix. Its characteristic is that the mixing temperature of the mixture can be reduced by 20-30°C through the warm mix agent, but it is also necessary to heat the asphalt and mineral materials from room temperature to about 120°C. With the requirements of building a resource-saving and environment-friendly society, the concept of environmental protection has gradually become popular, so there is an urgent need for environmentally friendly cold-mix asphalt mixtures that can be applied to various structural layers of roads in a large area.

At present, the existing cold mix asphalt mixture is mainly divided into two categories: solvent type and emulsion type cold mix asphalt mixture. Solvent-type cold-mix asphalt mixture is a ready-mixed cold-mix asphalt mixture, which is mainly prepared by diluting heated viscous asphalt with various organic solvents. Because it is mostly used for repairing road potholes, it is also often called cold patch. The most common application of emulsion-type cold-mix asphalt mixture is slurry mixture. At present, most of them use ordinary emulsified asphalt, stone materials, water, etc. to mix on-site with special paver trucks for slurry seal and spread directly on the original road surface to form a thin layer. , to improve and restore the function of the pavement surface, mainly used in the field of preventive maintenance of the road, not as a structural layer of the road.

The Chinese invention patent with the application number 201210198508.8 discloses a cold-mix phase change heat storage type asphalt mixture, which is composed of aggregates, porous base phase change heat storage particles, fillers, water, emulsified asphalt or modified emulsified asphalt It is mixed at room temperature, wherein the multi-space-based phase change heat storage particles are based on porous igneous rock aggregates, and the organic solid-liquid phase change material is adsorbed in the pore structure of the matrix under vacuum conditions. The scheme can reduce the temperature of the road surface to a certain extent, but its production cost is relatively high, and it is not easy to control. It is mainly used in the field of preventive maintenance of roads, not as a structural layer of roads.

Another Chinese invention patent with the application number of 201110282803.7 discloses a super-adhesive sealing layer for asphalt pavement and its construction method. .

Contents of the invention

In order to overcome the deficiencies in the prior art, the present invention provides a cold-mixed and cold-paved modified emulsified asphalt mixture with excellent performance, which can not only be used in the field of preventive maintenance of roads, but also can be used as a structural layer of roads; It consumes a lot of energy and has no waste gas and dust discharge. It is a resource-saving and environment-friendly cold-mixed cold-paved modified emulsified asphalt mixture. It can be used for the lower layer of new or reconstructed high-grade asphalt pavement and cement pavement. Underlayer, waterproof joint layer or various structural layers of low-grade pavement, etc. Utilizing the construction equipment for cold-mixing and cold-paving modified emulsified asphalt mixture provided by the present invention and the construction method for cold-mixing and cold-paving modified emulsified asphalt mixture can make the modified emulsified asphalt mixture of the present invention exert better effects .

A cold-mix cold-paving modified emulsified asphalt mixture, which comprises the following raw materials in parts by weight: 100 parts of graded crushed stone, 9-15 parts of SBS modified emulsified asphalt, 0-5 parts of filler, and 0-7 parts of water , 0-0.1 parts of additives.

Preferably, in any of the above schemes, the cold-mixed cold-paving modified emulsified asphalt mixture is composed of the following raw materials in parts by weight: 100 parts of graded gravel, 9-15 parts of SBS modified emulsified asphalt, 0-5 parts of filler parts, 0-7 parts of water, 0-0.1 parts of additives.

Preferably, in any of the above schemes, the cold-mixed cold-paving modified emulsified asphalt mixture includes the following raw materials in parts by weight: 100 parts of graded gravel, 9-12 parts of SBS modified emulsified asphalt, and 2-4 parts of filler , 3-5 parts of water, 0.05-0.08 parts of additives.

Preferably, in any of the above schemes, the cold-mixed and cold-paved modified emulsified asphalt mixture includes the following raw materials in parts by weight: 100 parts of graded crushed stone, 10 parts of SBS modified emulsified asphalt, 3 parts of filler, and 4 parts of water , 0.06 parts of additives.

Preferably, in any of the above schemes, the cold-mixed and cold-paved modified emulsified asphalt mixture includes the following raw materials in parts by weight: 100 parts of graded crushed stone, 9 parts of SBS modified emulsified asphalt, 4 parts of filler, and 5 parts of water , 0.07 parts of additives.

Preferably, in any of the above schemes, the cold-mixed and cold-paved modified emulsified asphalt mixture includes the following raw materials in parts by weight: 100 parts of graded crushed stone, 10 parts of SBS modified emulsified asphalt, 0.8 parts of filler, and 3 parts of water , 0.04 parts of additives.

Preferably, in any of the above schemes, the modified emulsified asphalt is selected from slow-cracking and slow-setting SBS modified emulsified asphalt.

Preferably, in any of the above schemes, the SBS modified emulsified asphalt includes the following raw materials in parts by weight: 50-65 parts of SBS modified asphalt, 0.5-2 parts of pentamethylalkyltrimethylene diquaternary ammonium emulsifier , 0.2 to 0.8 parts of polyethylene glycol emulsifier, 0.5 to 1.5 parts of alkylphenol polyoxyethylene emulsifier, 0.02 to 0.1 part of rheology modifier, 0.005 to 0.05 part of plasticizer, 30 to 30 parts of water 45 servings.

Preferably in any of the above schemes, the modified emulsified asphalt is composed of the following raw materials in parts by weight: 50-65 parts of SBS modified asphalt, 0.5-2 parts of pentamethyl alkyl trimethylene diquaternary ammonium emulsifier , 0.2 to 0.8 parts of polyethylene glycol emulsifier, 0.5 to 1.5 parts of alkylphenol polyoxyethylene emulsifier, 0.02 to 0.1 part of rheology modifier, 0.005 to 0.05 part of plasticizer, 30 to 30 parts of water 45 servings.

Preferably, in any of the above schemes, the modified emulsified asphalt comprises the following raw materials in parts by weight: 55 to 60 parts of SBS modified asphalt, 1 to 1.5 parts of pentamethyl alkyl trimethylene diquaternary ammonium emulsifier , 0.4-0.6 parts of polyethylene glycol emulsifier, 0.8-1 part of alkylphenol polyoxyethylene emulsifier, 0.05-0.08 part of rheology modifier, 0.01-0.04 part of plasticizer, 35-35 parts of water 40 servings.

Preferably in any of the above schemes, the modified emulsified asphalt comprises the following raw material composition in parts by weight: 58 parts of SBS modified asphalt, 1.2 parts of pentamethyl alkyl trimethylene diquaternary ammonium salt emulsifier, polyethylene glycol 0.5 part of alcohol emulsifier, 0.9 part of alkylphenol polyoxyethylene alkane emulsifier, 0.06 part of rheology modifier, 0.02 part of plasticizer, and 38 parts of water.

Preferably in any of the above schemes, the modified emulsified asphalt comprises the following raw materials in parts by weight: 56 parts of SBS modified asphalt, 1.4 parts of pentamethyl alkyl trimethylene diquaternary ammonium salt emulsifier, polyethylene glycol 0.4 part of alcohol emulsifier, 1 part of alkylphenol polyoxyethylene alkane emulsifier, 0.07 part of rheology modifier, 0.03 part of plasticizer, 36 parts of water.

Any of the above-mentioned schemes is preferably that the preparation method of the SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 175°C-180°C with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for The mass percentage of the SBS modified asphalt is 2% to 5%, and the mass percentage of the rubber softening oil in the SBS modified asphalt is 1% to 6%;

(2) Control the temperature at 180°C to 185°C and stir for 2 hours, then lower the temperature to 170°C to 175°C, add a stabilizer and stir for 1.5 hours; the mass percentage of the stabilizer in the SBS modified asphalt is 0.5‰ to 2.0‰.

Preferably, in any of the above schemes, the heating in step (1) is heated to 175-180°C.

Preferably, in any of the above schemes, the polymer linear SBS modifier in step (1) is thermoplastic styrene-butadiene rubber YH-791.

Preferably in any of the above schemes, the rheology modifier is polyurethane.

Preferably in any of the above schemes, the plasticizer is dibutyl phthalate.

Any of the above-mentioned schemes is preferably that the preparation method of the SBS modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add the plasticizer and the rheology modifier into water at 20-35°C in order to disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and Alkylphenol polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

Preferably, in any of the above schemes, in step (A), the SBS modified asphalt is heated to 170-175°C.

Preferably, in any of the above schemes, the temperature adjustment in step (B) is to adjust the temperature to 55-65°C.

Preferably, in any of the above schemes, the pH value of the soap solution in step (C) is 1.5-3.0.

Preferably, in any of the above schemes, the graded crushed stone includes aggregate and mineral powder.

In any of the above schemes, it is preferred that the aggregates include coarse aggregates and fine aggregates.

Preferably in any of the above schemes, the coarse aggregate and the fine aggregate are selected from basalt, diabase and/or limestone. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

Preferably in any of the above schemes, the mineral powder is selected from limestone mineral powder.

Preferably in any of the above schemes, the filler is ordinary P.O42.5 Portland cement.

Preferably in any of the above schemes, the water is clean drinking water.

Preferably in any of the above schemes, the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end. A baffle is arranged between the rear inner side of the paving box of the improved paver and the spiral paver. The baffle is 3m-5m long and 0.2m high -0.5m, thickness 0.05m-0.15m, so that the distance between the baffle and the spiral paver is reduced to 4 cm -6cm. Its purpose is to prevent too much cold mix from accumulating and demulsifying, which will affect paving.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

A construction method for cold-mixing and paving modified emulsified asphalt mixture, comprising the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 3m-5m long, 0.2m-0.5m high, and 0.05m-0.15m thick, so that the distance between the baffle and the spiral spreader is reduced to 4-6cm;

The parts by weight of the graded crushed stone, filler, water, additive, and SBS modified emulsified asphalt are: 100 parts of graded crushed stone, 0-5 parts of filler, 0-7 part of water, 0-0.1 part of additive, SBS 9-15 parts of modified emulsified asphalt.

Preferably, in any of the above schemes, the paving speed in step (iii) is 3-12m/min.

Preferably, in any of the above schemes, the pressure stabilization in step (iv) is to use a 6-8T steel wheel roller to carry out rolling before the SBS modified emulsified asphalt is not fully demulsified, and high-frequency vibration is turned on during rolling.

It is further preferred that the number of times of rolling with constant pressure is 1-2 times.

It is preferred for any of the above schemes that the recompression in step (iv) is performed after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off during rolling, use at least 25T glue Wheel rollers for rolling.

It is further preferred that the times of said re-compression rolling are 2-3 times.

Preferably, in any of the above schemes, the final pressure in step (ⅳ) is rolled after a large amount of moisture in the mixture has evaporated, and rolled at a high temperature on the same day or the next day, using a rubber-wheeled roller of at least 25T to make the mixture A dense state is reached; the high temperature is greater than 25°C.

It is further preferred that the final pressing times are at least 3 times.

The cold-mix and cold-pavement modified emulsified asphalt mixture involved in the present invention is a new type of emulsion-type asphalt mixture, which is mixed, paved and rolled at the construction site at normal temperature by using specially-made modified emulsified asphalt and mineral materials. It does not require high-temperature heating of mineral materials and asphalt like hot-mix asphalt mixture, high-temperature paving and rolling. Therefore, it has the outstanding advantages of energy saving, convenient storage and transportation, convenient construction and extended construction season, and the ability to use existing equipment for production and construction. In addition, the mixture has the characteristics of good flexibility, low temperature ductility, etc., and is also waterproof, and has good connection ability with the upper and lower structural layers, which can effectively prevent cracking caused by temperature and fatigue stress.

The modified emulsified asphalt mixture for cold mixing and cold paving in the present invention mainly adopts graded gravel with different particle sizes, (modified) emulsified asphalt, cement (slaked lime), additives, water, etc., and is prepared by special mixing equipment according to the designed ratio The supporting paving equipment works together to carry out on-site mixing, paving, and finally rolling to form asphalt mixture with a certain thickness. The differences between it and other emulsified asphalt mixtures are as follows:

① Cold-mixing and cold-paving modified emulsified asphalt mixture requires less water during the entire mixing process. During the mixing and paving process, the mixture does not appear emulsified asphalt slurry, and the mixture presents a viscosity similar to that of hot-mix asphalt mixture. state.

②The emulsified asphalt in the cold-mixed and cold-paved modified emulsified asphalt mixture lasts for a long time. There is still a small amount of unbroken modified emulsified asphalt in the mixture before the initial pressure. The emulsified asphalt acts as a continuous item to form a densely structured asphalt mixture.

③Cold mix and cold pavement modified emulsified asphalt mixture is a new type of asphalt mixture that uses the improved emulsified asphalt mixture mixing equipment and paving equipment to work together to carry out on-site mixing and paving, and finally rolled and formed by road rollers.

④Cold-mixing and cold-paving modified emulsified asphalt mixture can be paved into a certain thickness of asphalt pavement structure layer according to the design requirements of the pavement structure, which is used for the lower layer of new or reconstructed high-grade asphalt pavement, the lower layer of cement pavement, Waterproof joint layer or various structural layers of low-grade pavement, etc.

Description of drawings

Fig. 1 is a synthetic gradation curve diagram of mineral materials according to a preferred embodiment of cold-mixed cold-paved modified emulsified asphalt mixture and its construction equipment and method in the present invention.

Detailed ways

In order to further understand the present invention, the present invention will be described in more detail below in conjunction with specific examples, and embodiment only has exemplary effect to the present invention, and does not have any restrictive effect; Anyone skilled in the art on the basis of the present invention All non-substantial modifications made should belong to the protection scope of the present invention.

Example 1

The general situation of this physical project is: a new heavy-duty expressway in Inner Mongolia, two-way five-lane (3 lanes in the heavy-duty direction, 2 lanes in the light-load direction), the design speed is 120 km/h, the cement concrete pavement surface layer and cement stabilized gravel The waterproof joint layer of modified emulsified asphalt mixture is adopted between the bases. The composition, ratio and preparation method of cold-mixed cold-paved modified emulsified asphalt mixture are as follows.

According to the characteristics of local material supply, the aggregate is selected from basalt, the mineral powder is selected from limestone powder, the cement is selected from ordinary P.O42.5 Portland cement, the water is selected from clean drinking water, and the additive is selected from aliphatic quaternary ammonium salt surfactants. The modified emulsified asphalt adopts slow cracking and slow setting SBS modified emulsified asphalt. According to the gradation range of densely graded asphalt concrete mineral aggregates in the "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), the mixture is selected from AC-10Ⅰ gradation, and the synthetic gradation and gradation range are shown in Table 1. The synthetic gradation curve is shown in Figure 1.

Table 1 Mineral composition gradation of AC-10Ⅰ type asphalt mixture

The composition of the cold-mixed and cold-paved modified emulsified asphalt mixture for this physical project is: based on 100 parts of the total mass of graded crushed stone, 0.8 parts of cement, 3 parts of water, 0.04 parts of additives, and 10 parts of modified emulsified asphalt.

Table 2 Composition ratio of various materials

The preparation process and construction process of the above cold-mixed cold-paved modified emulsified asphalt mixture are as follows:

(1) Calibrate the improved slurry seal vehicle control system, respectively have the material output per unit time of various materials such as graded gravel, cement, water, additives, and modified emulsified asphalt, to ensure the accuracy of equipment output materials .

(2) Load graded gravel, cement, water, additives, modified emulsified asphalt and other materials into the slurry sealing vehicle, adjust the docking position of the mixing equipment and the paver, so that the paver conveyor belt and the mixing equipment The discharge port is closely connected.

(3) Start the slurry sealing vehicle and paver to mix and spread the cold-mixed cold-paved mixture. The paving thickness is 2cm, and the paving speed is 7.5m/min. According to the accumulation of the mixture during paving, Status to fine-tune the paving speed.

(4) After paving, compact the mixture and maintain its health. The compaction is divided into three stages: steady pressure, re-pressure and final pressure. The 8T light steel wheel roller is used for pressure stabilization immediately after the mixture is paved, and the 25T rubber wheel roller is used for recompression about 1 hour after the mixture is paved for re-pressure, and the final pressure is also used for the final pressure. The final pressure is carried out after 4-6 hours of paving; the mixture after paving and rolling is naturally cured at room temperature for 3 days. During the curing period, the vehicle is prohibited from turning around, and it needs to be covered in case of rain to prevent rain.

Example 2

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 11 parts of modified emulsified asphalt, 3 parts of filler, 4 parts of water, and 0.06 parts of additive.

In this embodiment, the modified emulsified asphalt is selected from slow cracking and setting SBS modified emulsified asphalt.

In this embodiment, the SBS modified emulsified asphalt includes the following raw materials in parts by weight: 58 parts of SBS modified asphalt, 1.2 parts of pentamethyl alkyl trimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsified 0.5 parts of agent, 0.9 parts of alkylphenol polyoxyethylene emulsifier, 0.06 parts of rheology modifier, 0.02 parts of plasticizer, and 38 parts of water.

In the present embodiment, the preparation method of described SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 177°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 4%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 4%;

(2) Control the temperature at 182°C and stir for 2 hours, lower the temperature to 172°C, add ZY stabilizer and stir for 1.5 hours; the mass percentage of the stabilizer in SBS modified asphalt is 1‰.

In this embodiment, the polymer linear SBS modifier in step (1) is thermoplastic styrene-butadiene rubber YH-791.

In this embodiment, the rheology modifier is polyurethane, and the plasticizer is dibutyl phthalate.

In the present embodiment, the preparation method of described SBS modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add the plasticizer and the rheology modifier sequentially into 30°C water to disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and alkyl Phenol-polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

In this embodiment, the SBS modified asphalt is heated to 172° C. in step (A).

In this embodiment, the temperature adjustment in step (B) is to adjust the temperature to 60°C.

In this embodiment, the pH value of the soap solution in step (C) is 2.0.

In this embodiment, the graded crushed stone includes aggregate and mineral powder, and the aggregate includes coarse aggregate and fine aggregate.

In this embodiment, the coarse aggregate and fine aggregate are selected from basalt. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

In this embodiment, the mineral powder is limestone mineral powder, the filler is ordinary P.O42.5 Portland cement, the water is clean drinking water, and the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end, and a baffle is arranged between the rear inner side of the paving box of the improved paver and the spiral paver, and the baffle is 3.5m long x 0.45m high The thickness is 0.1m, so that the distance between the baffle and the spiral paver is reduced to 4-6cm.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

The construction method of the above-mentioned cold-mixing and cold-paving modified emulsified asphalt mixture comprises the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 3.5m long×0.45m high×0.01m thick, so that the distance between the baffle and the spiral spreader is reduced to 5cm;

In this example, the paving speed in step (iii) is 6m/min, and the pressure stabilization in step (iv) is carried out with a 7T steel wheel roller before the SBS modified emulsified asphalt is completely demulsified. When rolling, high-frequency vibration can be turned on, and the number of times of the stable pressure rolling is 2 times.

In this example, the re-pressing described in step (iv) is carried out after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off after rolling, a 25T rubber-tyred road roller is used for rolling Press, and the number of times of rolling is 2 times.

In this embodiment, the final pressure described in step (iv) is rolled after a large amount of moisture in the mixture evaporates, and a 25T rubber-tyred road roller is used for rolling to make the mixture reach a compact state. The number of times is 3 times.

Example 3

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: the cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 9 parts of modified emulsified asphalt, 4 parts of filler, 5 parts of water, and 0.07 parts of additive.

In this embodiment, the modified emulsified asphalt is selected from slow cracking and setting SBS modified emulsified asphalt.

In this embodiment, the SBS modified emulsified asphalt is composed of the following raw materials in parts by weight: 56 parts of SBS modified asphalt, 1.4 parts of pentamethylalkyltrimethylene diquaternary ammonium emulsifier, polyethylene glycol 0.4 parts of emulsifier, 1 part of alkylphenol polyoxyethylene alkane emulsifier, 0.07 parts of rheology modifier, 0.03 parts of plasticizer, and 36 parts of water.

In the present embodiment, the preparation method of described SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 176°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 3%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 2%;

(2) Control the temperature at 184°C and stir for 2 hours, then lower the temperature to 174°C, add ZY stabilizer and stir for 1.5 hours; the mass percentage of ZY stabilizer in SBS modified asphalt is 1.5‰.

In this embodiment, the heating in step (1) is to 176° C., and the polymer linear SBS modifier is thermoplastic styrene-butadiene rubber YH-791.

In this embodiment, the rheology modifier is polyurethane.

In this embodiment, the plasticizer is dibutyl phthalate.

In the present embodiment, the preparation method of modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add plasticizers and rheology modifiers sequentially to 28°C water to disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and alkyl Phenol-polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

In this example, the SBS modified asphalt is heated to 173° C. in step (A).

In this embodiment, the temperature adjustment in step (B) is to adjust the temperature to 58°C.

In this embodiment, the pH value of the soap solution in step (C) is 2.5.

In this embodiment, the rheology modifier is polyurethane, and the plasticizer is dibutyl phthalate.

In this embodiment, the graded crushed stone includes aggregate and mineral powder, and the aggregate includes coarse aggregate and fine aggregate.

In this embodiment, the coarse aggregate and fine aggregate are selected from diabase. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

In this embodiment, the mineral powder is limestone mineral powder, the filler is ordinary P.O42.5 Portland cement, the water is clean drinking water, and the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end. A baffle is arranged between the rear inner side of the paving box of the improved paver and the spiral paver. The baffle is 3m long, 0.2m high, and thick. 0.05m, so that the distance between the baffle and the spiral paver is reduced to 4cm.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

The construction method of the above-mentioned cold-mixing and cold-paving modified emulsified asphalt mixture comprises the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 3m high, 0.2m high, and 0.05m thick, so that the distance between the baffle and the spiral spreader is reduced to 4cm;

In this example, the paving speed in step (iii) is 8m/min, and the pressure stabilization in step (iv) is carried out with a 6T steel wheel roller before the SBS modified emulsified asphalt is completely demulsified. High-frequency vibration can be turned on during rolling, and the number of times of the stable pressure rolling is 1 time.

In this example, the re-pressing described in step (iv) is carried out after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off after rolling, a 25T rubber-tyred road roller is used for rolling Press, and the number of times of rolling is 3 times.

In this embodiment, the final pressure in step (ⅳ) is rolled on the same day after a large amount of moisture in the mixture evaporates, and a 25T rubber-tyred road roller is used for rolling to make the mixture reach a compact state. The number of times of pressing is 4 times.

Example 4

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 12 parts of modified emulsified asphalt, 2 parts of filler, 6 parts of water, and 0.05 part of additive.

In this embodiment, the modified emulsified asphalt is selected from slow cracking and setting SBS modified emulsified asphalt.

In this embodiment, the SBS modified emulsified asphalt includes the following raw materials in parts by weight: 55 parts of SBS modified asphalt, 1 part of pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsified 0.6 parts of agent, 0.8 parts of alkylphenol polyoxyethylene emulsifier, 0.05 parts of rheology modifier, 0.01 part of plasticizer, and 35 parts of water.

In the present embodiment, the preparation method of described SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 178°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 2%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 5%;

(2) Control the temperature at 180°C and stir for 2 hours, then lower the temperature to 170°C, add ZY stabilizer and stir for 1.5 hours; the mass percentage of the stabilizer in SBS modified asphalt is 1.8‰.

In this embodiment, the heating in step (1) is to heat to 178° C., and the polymer linear SBS modifier in step (1) is thermoplastic styrene-butadiene rubber YH-791.

In this embodiment, the rheology modifier is polyurethane.

In this embodiment, the plasticizer is dibutyl phthalate.

In the present embodiment, the preparation method of modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add the plasticizer and the rheology modifier in 32°C water in sequence to disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and alkyl Phenol-polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

In this embodiment, the SBS modified asphalt is heated to 170° C. in step (A).

In this embodiment, the temperature adjustment in step (B) is to adjust the temperature to 62°C.

In this embodiment, the pH value of the soap solution in step (C) is 1.5.

In this embodiment, the rheology modifier is polyurethane, and the plasticizer is dibutyl phthalate.

In this embodiment, the graded crushed stone includes aggregate and mineral powder, and the aggregate includes coarse aggregate and fine aggregate.

In this embodiment, limestone is selected as the coarse aggregate and fine aggregate. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

In this embodiment, the mineral powder is limestone mineral powder, the filler is ordinary P.O42.5 Portland cement, the water is clean drinking water, and the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end. A baffle is arranged between the rear inner side of the paving box of the improved paver and the spiral paver. The baffle is 5m long, 0.5m high, and thick 0.15m, so that the distance between the baffle and the spiral paver is reduced to 6cm.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

The construction method of the above-mentioned cold-mixing and cold-paving modified emulsified asphalt mixture comprises the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 5m long, 0.5m high, and 0.15m thick, so that the distance between the baffle and the spiral spreader is reduced to 6cm;

In this example, the paving speed in step (ⅳ) is 10m/min, and the pressure stabilization in step (ⅳ) is carried out with an 8T steel wheel roller before the SBS modified emulsified asphalt is completely demulsified. When rolling, high-frequency vibration can be turned on, and the number of times of the stable pressure rolling is 2 times.

In this example, the re-pressing described in step (iv) is carried out after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off after rolling, a 25T rubber-tyred road roller is used for rolling Press, and the number of times of rolling is 2 times.

In this example, the final pressure described in step (iv) is rolled after a large amount of water in the mixture has evaporated, and the next day when the temperature is greater than 25°C, a 25T rubber-tyred road roller is used for rolling to make the mixture reach a compact state , the number of final pressing times is 5 times.

Example 5

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 13 parts of modified emulsified asphalt, 5 parts of filler, 2 parts of water, and 0.08 parts of additive.

In this embodiment, the modified emulsified asphalt is selected from slow cracking and setting SBS modified emulsified asphalt.

In this embodiment, the SBS modified emulsified asphalt includes the following raw materials in parts by weight: 60 parts of SBS modified asphalt, 1.5 parts of pentamethyl alkyl trimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsified 0.2 parts of emulsifier, 0.5 parts of alkylphenol polyoxyethylene emulsifier, 0.08 parts of rheology modifier, 0.04 parts of plasticizer, and 40 parts of water.

In the present embodiment, the preparation method of described SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 175°C and grind it with a colloid mill, and then add rubber softening oil; The mass percentage of permanent asphalt is 5%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 1%;

(2) Control the temperature at 185°C and stir for 2 hours, then lower the temperature to 175°C, add a stabilizer and stir for 1.5 hours; the mass percentage of the stabilizer in the SBS modified asphalt is 0.5‰.

In this embodiment, the heating in step (1) is heating to 175°C.

In this embodiment, the polymer linear SBS modifier in step (1) is thermoplastic styrene-butadiene rubber YH-791.

In this embodiment, the rheology modifier is polyurethane.

In this embodiment, the plasticizer is dibutyl phthalate.

In the present embodiment, the preparation method of modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add plasticizers and rheology modifiers sequentially to 20°C water to disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and alkyl Phenol-polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

In this embodiment, the SBS modified asphalt is heated to 170° C. in step (A).

In this embodiment, the temperature adjustment in step (B) is to adjust the temperature to 55°C.

In this embodiment, the pH value of the soap solution in step (C) is 3.0.

In this embodiment, the rheology modifier is polyurethane, and the plasticizer is dibutyl phthalate. In this embodiment, the graded crushed stone includes aggregate and mineral powder, and the aggregate includes coarse aggregate and fine aggregate.

In this embodiment, the coarse aggregate and fine aggregate are selected from basalt and diabase respectively. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

In this embodiment, the mineral powder is limestone mineral powder, the filler is ordinary P.O42.5 Portland cement, the water is clean drinking water, and the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end, a baffle plate is arranged between the rear inner side of the paving box of the improved paver and the spiral spreader, the baffle plate is 3.5m long and 0.3m high, The thickness is 0.08m, so that the distance between the baffle and the spiral paver is reduced to 4.5cm.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

The construction method of the above-mentioned cold-mixing and cold-paving modified emulsified asphalt mixture comprises the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing for a long time and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 3.5m long, 0.3m high, and 0.08m thick, so that the distance between the baffle and the spiral spreader is reduced to 4.5cm;

In this example, the paving speed in step (iii) is 5m/min, and the pressure stabilization in step (iv) is carried out with a 6T steel wheel roller before the SBS modified emulsified asphalt is completely demulsified. High-frequency vibration can be turned on during rolling, and the number of times of the stable pressure rolling is 1 time.

In this example, the re-pressing described in step (iv) is carried out after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off after rolling, a 25T rubber-tyred road roller is used for rolling Press, and the number of times of rolling is 3 times.

In this example, the final pressure described in step (iv) is to carry out rolling when the temperature of the day is higher than 25°C after a large amount of water in the mixture evaporates, and use a 25T rubber-tyred road roller to make the mixture compact. , the number of final pressing times is 4 times.

Example 6

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 14 parts of modified emulsified asphalt, 3.5 parts of filler, 1 part of water, and 0.01 part of additive.

In this embodiment, the modified emulsified asphalt is selected from slow cracking and setting SBS modified emulsified asphalt.

In this embodiment, the SBS modified emulsified asphalt includes the following raw materials in parts by weight: 50 parts of SBS modified asphalt, 0.5 part of pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsified 0.8 parts of agent, 1.5 parts of alkylphenol polyoxyethylene emulsifier, 0.02 parts of rheology modifier, 0.05 parts of plasticizer, and 30 parts of water.

In the present embodiment, the preparation method of described SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 180°C and use a colloid mill to grind, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 5%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 6%;

(2) Control the temperature at 181°C and stir for 2 hours, lower the temperature to 171°C, add a stabilizer and stir for 1.5 hours; the mass percentage of the stabilizer in the SBS modified asphalt is 0.5‰～2.0‰.

In this embodiment, the heating in step (1) is heating to 180°C.

In this embodiment, the polymer linear SBS modifier in step (1) is thermoplastic styrene-butadiene rubber YH-791.

In this embodiment, the rheology modifier is polyurethane.

In this embodiment, the plasticizer is dibutyl phthalate.

In the present embodiment, the preparation method of modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add the plasticizer and the rheology modifier to 35°C water sequentially and disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and alkyl Phenol-polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

In this embodiment, the SBS modified asphalt is heated to 175° C. in step (A).

In this embodiment, the temperature adjustment in step (B) is to adjust the temperature to 65°C.

In this embodiment, the pH value of the soap solution in step (C) is 1.8.

In this embodiment, the rheology modifier is polyurethane, and the plasticizer is dibutyl phthalate. In this embodiment, the graded crushed stone includes aggregate and mineral powder, and the aggregate includes coarse aggregate and fine aggregate.

In this embodiment, the coarse aggregate and fine aggregate are selected from basalt and limestone respectively. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

In this embodiment, the mineral powder is limestone mineral powder, the filler is ordinary P.O42.5 Portland cement, the water is clean drinking water, and the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end, a baffle plate is arranged between the rear inner side of the paving box of the improved paver and the spiral spreader, the baffle plate is 4.5m long and 0.4m high, The thickness is 0.12m, so that the distance between the baffle and the spiral paver is reduced to 5.5cm.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

The construction method of the above-mentioned cold-mixing and cold-paving modified emulsified asphalt mixture comprises the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 4.5m long, 0.4m high, and 0.12m thick, so that the distance between the baffle and the spiral spreader is reduced to 5.5cm;

In this example, the paving speed in step (iii) is 7m/min, and the pressure stabilization in step (iv) is carried out with a 7T steel wheel roller before the SBS modified emulsified asphalt is completely demulsified. When rolling, high-frequency vibration can be turned on, and the number of times of the stable pressure rolling is 2 times.

In this example, the re-pressing described in step (iv) is carried out after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off after rolling, a 25T rubber-tyred road roller is used for rolling Press, and the number of times of rolling is 2 times.

In this example, the final pressure described in step (iv) is rolled after a large amount of water in the mixture has evaporated, and the next day when the temperature is greater than 25°C, a 25T rubber-tyred road roller is used for rolling to make the mixture reach a compact state , the number of final pressing times is 5 times.

Example 7

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 15 parts of modified emulsified asphalt, 1 part of filler, 7 parts of water, and 0.1 part of additive.

In this embodiment, the modified emulsified asphalt is selected from slow cracking and setting SBS modified emulsified asphalt.

In this embodiment, the SBS modified emulsified asphalt includes the following raw materials in parts by weight: 65 parts of SBS modified asphalt, 2 parts of pentamethyl alkyl trimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsified 0.3 parts of emulsifier, 0.6 parts of alkylphenol polyoxyethylene emulsifier, 0.1 part of rheology modifier, 0.05 part of plasticizer, and 45 parts of water.

In the present embodiment, the preparation method of described SBS modified asphalt is:

(1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 179°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 4%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 3%;

(2) Control the temperature at 183°C and stir for 2 hours, then lower the temperature to 173°C, add a stabilizer and stir for 1.5 hours; the mass percentage of the stabilizer in the SBS modified asphalt is 2.0‰.

In this embodiment, the heating in step (1) is heating to 179°C.

In this embodiment, the polymer linear SBS modifier in step (1) is thermoplastic styrene-butadiene rubber YH-791.

In this embodiment, the rheology modifier is polyurethane.

In this embodiment, the plasticizer is dibutyl phthalate.

In the present embodiment, the preparation method of modified emulsified asphalt comprises the following steps:

(A) Heating the SBS modified asphalt for later use;

(B) Add plasticizers and rheology modifiers sequentially to 25°C water to disperse evenly, then add pentamethylalkyltrimethylene diquaternary ammonium salt emulsifier, polyethylene glycol emulsifier and alkyl Phenol-polyoxyethylene alkane emulsifier and appropriate amount of water are stirred evenly, and the temperature is adjusted to obtain a mixed solution;

(C) adding an appropriate amount of hydrochloric acid to the step (B) to adjust the pH value of the mixed solution to prepare soap for later use;

(D) Start the emulsification equipment and input the soap solution in step (C) and the heated SBS modified asphalt in step (A) in sequence, and after high-speed shearing and grinding by the colloid mill, brown SBS modified emulsified asphalt is formed;

In this embodiment, the SBS modified asphalt is heated to 171° C. in step (A).

In this embodiment, the temperature adjustment in step (B) is to adjust the temperature to 64°C.

In this embodiment, the pH value of the soap solution in step (C) is 2.8.

In this embodiment, the rheology modifier is polyurethane, and the plasticizer is dibutyl phthalate.

In this embodiment, the graded crushed stone includes aggregate and mineral powder, and the aggregate includes coarse aggregate and fine aggregate.

In this embodiment, the coarse aggregate and fine aggregate are selected from diabase and limestone respectively. Aggregate gradation refers to the gradation range of densely graded asphalt mixture specified in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004), and selects the appropriate synthetic gradation according to the performance requirements of the mixture.

In this embodiment, the mineral powder is limestone mineral powder, the filler is ordinary P.O42.5 Portland cement, the water is clean drinking water, and the additive is an aliphatic quaternary ammonium salt additive.

A construction equipment for cold mixing and paving modified emulsified asphalt mixture, comprising an improved slurry seal vehicle and an improved paver; the improved slurry seal vehicle removes the slurry seal in the prior art The original paving box of the car and the rubber hopper at the tail end, a baffle plate is arranged between the rear inner side of the paving box of the improved paver and the spiral spreader, the baffle plate is 3.8m long and 0.3m high, The thickness is 0.14m, so that the distance between the baffle and the spiral paver is reduced to 5cm.

The improved slurry sealing vehicle ensures that when the slurry sealing vehicle is docked with the paver, the mixing cylinder of the slurry sealing vehicle is located on the paver conveyor belt, and the two have a certain height difference, which can ensure The mixture output from the mixing tank passes continuously through the conveyor belt to reach the screw spreader; the improved paver reduces the amount of stock in the spreading box, prevents excessive accumulation of mixed material, delays the discharge time of the spreading box, and causes emulsification Asphalt demulsification. There is no precedent for the combined construction of these two types of equipment in the prior art. In order to meet the needs of the coordinated operation of the two types of equipment, the two types of equipment must be modified separately.

The construction method of the above-mentioned cold-mixing and cold-paving modified emulsified asphalt mixture comprises the following steps:

(i) Calibrate the various raw material output systems of the improved slurry sealing vehicle to ensure the accuracy of the output of the mixing equipment;

(ii) Load graded gravel, filler, water, additives, and SBS modified emulsified asphalt materials into the improved slurry seal vehicle in step (i), and adjust the improved slurry seal vehicle and the improved paving The position of the paver machine, so that the improved discharge port of the slurry sealing car is closely connected with the improved conveyor belt of the paver;

(Ⅲ) Start the improved slurry sealing vehicle and the improved paver to mix and pave the cold-mixed cold paving mixture, and select the appropriate paving speed according to the paving thickness and the output of the slurry sealing vehicle ;

(iv) Compaction is carried out after the mixture is paved, and the compaction is divided into three stages: steady pressure, re-pressure, and final pressure;

(ⅴ) Natural health preservation at room temperature for 3 days. During the health preservation period, vehicles are prohibited from turning around to prevent rainwater from washing for a long time and destroying the asphalt film on the surface of the mixture;

The improved slurry sealing vehicle removes the original spreading box and the rubber hopper at the tail end of the slurry sealing vehicle in the prior art, and the rear inner side of the spreading box of the improved paver and the spiral spreader A baffle is arranged between, and the baffle is 3.8m long, 0.3m high, and 0.14m thick, so that the distance between the baffle and the spiral spreader is reduced to 5cm;

In this example, the paving speed in step (ⅳ) is 11 m/min, and the pressure stabilization in step (ⅳ) is carried out with an 8T steel wheel roller before the SBS modified emulsified asphalt is completely demulsified. High-frequency vibration can be turned on during rolling, and the number of times of the stable pressure rolling is 1 time.

In this example, the re-pressing described in step (iv) is carried out after the SBS modified emulsified asphalt on the surface of the paved mixture returns to the asphalt state, and when the asphalt film does not fall off after rolling, a 25T rubber-tyred road roller is used for rolling Press, and the number of times of rolling is 3 times.

In this embodiment, the final pressure in step (ⅳ) is rolled on the same day after a large amount of water in the mixture evaporates, and a 25T rubber-tyred road roller is used for rolling to make the mixture reach a compact state. The final pressure Rolling frequency is 3 times.

Example 8

This embodiment is roughly the same as Embodiment 2, and its difference is:

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 12 parts of modified emulsified asphalt.

Example 9

This embodiment is roughly the same as Embodiment 2, and its difference is:

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS 11 parts of modified emulsified asphalt, 5 parts of filler.

Example 10

This embodiment is roughly the same as Embodiment 2, and its difference is:

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS Modified emulsified asphalt 15 parts, filler 3 parts, water 4 parts.

Example 11

This embodiment is roughly the same as Embodiment 2, and its difference is:

A cold-mix and cold-paved modified emulsified asphalt mixture, which includes the following raw materials in parts by weight: The cold-mixed and cold-paved modified emulsified asphalt mixture includes raw materials in the following parts by weight: 100 parts of graded gravel, SBS Modified emulsified asphalt 10 parts, water 4 parts, additive 0.1 part.

Claims (31)

1. a cold mixing cold-application modified emulsifying asphalt compound, it comprises the raw material of following parts by weight: graded broken stone 100 parts, SBS modified emulsifying asphalt 9 ~ 15 parts, filler 0 ~ 5 part, 0 ~ 7 part, water, additive 0 ~ 0.1 part; Described SBS modified emulsifying asphalt comprises the raw material of following parts by weight: SBS modifying asphalt 50 ~ 65 parts, pentamethyl-alkyl trimethylene di-quaternary ammonium salt emulsifying agent 0.5 ~ 2 part, polyethylene glycols emulsifying agent 0.2 ~ 0.8 part, alkylphenol-polyethenoxy alkanes emulsifying agent 0.5 ~ 1.5 part, rheology modifier 0.02 ~ 0.1 part, 0.005 ~ 0.05 part, softening agent, 30 ~ 45 parts, water; Described filler is common P.O42.5 silicate cement; Described additive is fatty quaternary amine class additive.

2. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 1, is characterized in that, be made up of the raw material of following parts by weight: graded broken stone 100 parts, SBS modified emulsifying asphalt 9 ~ 15 parts, filler 0 ~ 5 part, 0 ~ 7 part, water, additive 0 ~ 0.1 part.

3. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 1, is characterized in that, comprise the raw material of following parts by weight: graded broken stone 100 parts, SBS modified emulsifying asphalt 9 ~ 12 parts, filler 2 ~ 4 parts, 3 ~ 5 parts, water, additive 0.05 ~ 0.08 part.

4. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 3, is characterized in that, comprise the raw material of following parts by weight: graded broken stone 100 parts, SBS modified emulsifying asphalt 10 parts, filler 3 parts, 4 parts, water, additive 0.06 part.

5. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 3, is characterized in that, comprise the raw material of following parts by weight: graded broken stone 100 parts, SBS modified emulsifying asphalt 9 parts, filler 4 parts, 5 parts, water, additive 0.07 part.

6. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 1, is characterized in that, comprise the raw material of following parts by weight: graded broken stone 100 parts, SBS modified emulsifying asphalt 10 parts, filler 0.8 part, 3 parts, water, additive 0.04 part.

7. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 1, it is characterized in that, described modified emulsifying asphalt is selected and is split slow hardening SBS modified emulsifying asphalt slowly.

8. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 1, it is characterized in that, described SBS modified emulsifying asphalt is made up of the raw material of following parts by weight: SBS modifying asphalt 50 ~ 65 parts, pentamethyl-alkyl trimethylene di-quaternary ammonium salt emulsifying agent 0.5 ~ 2 part, polyethylene glycols emulsifying agent 0.2 ~ 0.8 part, alkylphenol-polyethenoxy alkanes emulsifying agent 0.5 ~ 1.5 part, rheology modifier 0.02 ~ 0.1 part, 0.005 ~ 0.05 part, softening agent, 30 ~ 45 parts, water.

9. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 1, it is characterized in that, described SBS modified emulsifying asphalt comprises the raw material composition of following parts by weight: SBS modifying asphalt 55 ~ 60 parts, pentamethyl-alkyl trimethylene di-quaternary ammonium salt emulsifying agent 1 ~ 1.5 part, polyethylene glycols emulsifying agent 0.4 ~ 0.6 part, alkylphenol-polyethenoxy alkanes emulsifying agent 0.8 ~ 1 part, rheology modifier 0.05 ~ 0.08 part, 0.01 ~ 0.04 part, softening agent, 35 ~ 40 parts, water.

10. cold mixing cold-application modified emulsifying asphalt compound as claimed in claim 9, it is characterized in that, described SBS modified emulsifying asphalt comprises the raw material composition of following parts by weight: SBS modifying asphalt 58 parts, pentamethyl-alkyl trimethylene di-quaternary ammonium salt emulsifying agent 1.2 parts, polyethylene glycols emulsifying agent 0.5 part, alkylphenol-polyethenoxy alkanes emulsifying agent 0.9 part, rheology modifier 0.06 part, 0.02 part, softening agent, 38 parts, water.

11. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 9, it is characterized in that, described SBS modified emulsifying asphalt comprises the raw material composition of following parts by weight: SBS modifying asphalt 56 parts, pentamethyl-alkyl trimethylene di-quaternary ammonium salt emulsifying agent 1.4 parts, polyethylene glycols emulsifying agent 0.4 part, alkylphenol-polyethenoxy alkanes emulsifying agent 1 part, rheology modifier 0.07 part, 0.03 part, softening agent, 36 parts, water.

12. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 1, it is characterized in that, the preparation method of described SBS modifying asphalt is:

(1), after being heated by matrix pitch AH70, add high molecular polymer type SBS properties-correcting agent gradually, control temperature grinds at 175 DEG C ~ 180 DEG C employing colloidal mills, adds rubber softening oil more subsequently; The mass percent that described SBS modifier accounts for SBS modifying asphalt is 2% ~ 5%, and the mass percent that described rubber softening oil accounts for SBS modifying asphalt is 1% ~ 6%;

(2) control temperature stirs 2h at 180 DEG C ~ 185 DEG C, adds stablizer and stir 1.5h again after reducing temperature to 170 DEG C ~ 175 DEG C; The mass percent that described stablizer accounts for SBS modifying asphalt is 0.5 ‰ ~ 2.0 ‰.

13. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 12, is characterized in that, described in step (1), heating is heated to 175 DEG C ~ 180 DEG C, and described in step (1), polymkeric substance line style SBS modifier is thermoplastic styrene butadiene rubber YH-791.

14. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 1, it is characterized in that, described rheology modifier is polyurethanes.

15. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 1, it is characterized in that, described softening agent is dibutyl phthalate.

16. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 1, it is characterized in that, the preparation method of described SBS modified emulsifying asphalt, comprises the steps:

(A) SBS modifying asphalt is added hot reserve;

(B) by softening agent and rheology modifier successively order add in 20 DEG C ~ 35 DEG C water and be uniformly dispersed, add pentamethyl-alkyl trimethylene di-quaternary ammonium salt emulsifying agent, polyethylene glycols emulsifying agent and alkylphenol-polyethenoxy alkanes emulsifying agent and appropriate water subsequently and stir, regulate temperature, obtained mixed solution;

(C) in step (B), add the pH value that appropriate hydrochloric acid regulates mixed solution, obtained soap lye is for subsequent use;

(D) start the emulsifying device successively soap lye of order input step (C) and the SBS modifying asphalt of the middle heating of step (A), after colloidal mill high speed shear also grinding, form brown SBS modified emulsifying asphalt.

17. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 16, it is characterized in that, in step (A), SBS modifying asphalt is heated to 170 DEG C ~ 175 DEG C, regulate temperature to be that temperature is adjusted to 55 DEG C ~ 65 DEG C described in step (B), described in step (C), the pH value of soap lye is 1.5 ~ 3.0.

18. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 1, it is characterized in that, described graded broken stone comprises and gathering materials and breeze.

19. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 18, is characterized in that, described in gather materials and comprise coarse aggregate and fine aggregate.

20. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 19, it is characterized in that, described coarse aggregate, fine aggregate select basalt, diabase and/or limestone.

21. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 18, it is characterized in that, limestone dust selected by described breeze.

22. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 1, is characterized in that, described water is clean tap water.

The preparation of construction of 23. 1 kinds of cold mixing cold-application modified emulsifying asphalt compounds, comprises the rare slurry sealing vehicle of improvement and the paver of improvement; The rare slurry sealing vehicle of described improvement eliminates the rubber hopper of the original paving box of rare slurry sealing vehicle in prior art and tail end, baffle plate is provided with between inner side and helical spreader after the paving box of the paver of described improvement, long 3m ~ the 5m of described baffle plate, high 0.2m ~ 0.5m, thick 0.05m ~ 0.15m, makes the distance of baffle plate and helical spreader be reduced to 4 cm ~ 6cm.

The constructional method of 24. 1 kinds of cold mixing cold-application modified emulsifying asphalt compounds, comprises the following steps:

(I) various starting material output systems to the rare slurry sealing vehicle improved are demarcated, and guarantee the accuracy of mixing apparatus discharging;

Graded broken stone, filler, water, additive, SBS modified emulsifying asphalt material are loaded the rare slurry sealing vehicle improved in step (I) by (II) respectively, the position of the paver of the rare slurry sealing vehicle that adjustment improves and improvement, makes the rare slurry sealing vehicle discharge port of improvement closely be connected with the paver travelling belt of improvement;

The paver that (III) starts rare slurry sealing vehicle and the improvement improved carries out mixing and stirring of cold mixing cold-application compound and paves, and the load according to paving thickness and rare slurry sealing vehicle selects suitable spreading speed;

Carry out compacting after (IV) mixture laying, described compacting divides voltage stabilizing, multiple pressure, final pressure three phases;

(V) natural Health preservation 3 days at normal temperatures, forbids between preserving period that vehicle turns around, prevents rainwater shower, destroys mix surface asphalt membrane;

The rare slurry sealing vehicle of described improvement eliminates the rubber hopper of the original paving box of rare slurry sealing vehicle in prior art and tail end, baffle plate is provided with between inner side and helical spreader after the paving box of the paver of described improvement, long 3m ~ the 5m of described baffle plate, high 0.2m ~ 0.5m, thick 0.05m ~ 0.15m, makes the distance of baffle plate and helical spreader be reduced to 4 cm ~ 6cm;

The parts by weight of described graded broken stone, filler, water, additive, SBS modified emulsifying asphalt are: graded broken stone 100 parts, filler 0 ~ 5 part, 0 ~ 7 part, water, additive 0 ~ 0.1 part, SBS modified emulsifying asphalt 9 ~ 15 parts; Described filler is common P.O42.5 silicate cement; Described additive is fatty quaternary amine class additive.

The constructional method of 25. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 24, it is characterized in that, described in step (III), spreading speed is 3 ~ 12m/min.

The constructional method of 26. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 24, it is characterized in that, voltage stabilizing described in step (IV) adopts 6-8T Steel Roller to roll before the incomplete breakdown of emulsion of SBS modified emulsifying asphalt, opens high-frequency vibration when rolling.

The constructional method of 27. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 26, is characterized in that, described voltage stabilizing rolling layer 1 ~ 2 time.

The constructional method of 28. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 24, it is characterized in that, described in step (IV), multiple pressure is after the mix surface SBS modified emulsifying asphalt paved returns to pitch state, and roll when coming off without asphalt membrane and carry out, adopt at least 25T pneumatic-tired rollers to roll.

The constructional method of 29. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 28, is characterized in that, the described rolling layer of pressure again 2 ~ 3 times.

The constructional method of 30. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 24, it is characterized in that, described in step (IV), final pressure is after mixture moisture evaporates in a large number, roll when the same day or secondary sky high temperature, adopt the pneumatic-tired rollers of at least 25T to roll, reach dense state to make compound; Described high temperature is that temperature is greater than 25 DEG C.

The constructional method of 31. cold mixing cold-application modified emulsifying asphalt compounds as claimed in claim 30, is characterized in that, described final pressure rolling layer at least 3 times.