KR101562170B1 - Applying Material on the wall and the applying method on the wall by using the same - Google Patents

Abstract

The present invention relates to an epoxy coating material and a urethane coating material using ultrafine stone powder having a particle size of 1000 to 5000 mesh on a concrete wall, and a coating method on a wall using the same. More specifically, , It is possible to apply ultrafine epoxy coating material and urethane coating material by mixing ultrafine stone powder with epoxy and urethane so as not to flow down, A second step of applying a urethane coating material containing 1000 to 5000 mesh ultrafine stone powder to a first concrete wall, and a second step of applying a urethane coating material containing 1000 to 5000 mesh ultrafine stone powder to a first concrete wall, ~ 5000 mesh urethane coating material including ultrafine stone powder is applied to the second concrete wall 3 and the step over the epoxy coating material and the upper concrete wall comprising a fourth step of curing the urethane coating material, which was ultra fine stone powder mixed epoxy and urethane coating material applying method is provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall surface coating material,

The present invention relates to a wall surface coating material capable of coating a wall of a concrete wall while maintaining a certain thickness without flowing when applying epoxy, urethane or the like using a roller, brush, spray or the like, and a wall surface coating method using the same .

Generally, concrete structure can be divided into building and civil engineering. In building, building wall is the main concrete structure, and for civil engineering, bridge and road concrete structure are representative.

Concrete structures, whether for construction or civil engineering, are subjected to freezing and thawing processes while meeting with water, and concrete is neutralized due to chemical components used for maintenance, and its inherent strength deteriorates over time, , It is a reality that the reconstruction is carried out after a safety diagnosis about 30 ~ 40 years ago. In the case of bridges, once the bridges are re-installed, the bypass roads should be installed exactly as they were at the time of new construction, and after removing existing bridges or roads, re-installing the bridges and roads, It takes a lot.

On the other hand, it is not possible to pay attention to the maintenance of social overhead capital, which is difficult to install, but only to install. As time passes, all structures should be removed and reinstalled. Problems of environmental pollution caused by waste and cost problems and installation of bypass facilities The cost of safety accidents and other social costs.

For example, as society develops, the use of automobiles increases, and metropolitan areas, ring roads, and highways have become essential requirements. Therefore, soundproof walls, balustrades, and median separators are installed along the ring roads and freeways. If a sound barrier is installed on a concrete structure and the sound barrier is well maintained, if the concrete structure starts to fall off, the costly sound barrier should be dismantled, the concrete structure should be reinstalled and the sound barrier should be reinstalled. In this case, it is a reality to use only the paint without paying special attention.

Epoxy can be mainly divided into liquid type and putty type, and the liquid type is applied by using a roller or brush sprayer, and the putty type is applied by using black iron powder. Urethanes are used in the form of liquid and putty sealants, which are also the same as epoxy.

At this time, there is no problem in applying the floor. Even if it is a liquid type, a flat surface is formed when it is applied thickly, and a flat bottom surface is formed when it is hardened. On the other hand, the situation on the wall is very difficult. If it is liquid, it should be applied on the wall surface by using roller or spray, but once it is applied with the roller because of its viscosity is thin, the thickness is not formed and the inner surface of the wall continues to be exposed. Therefore, it is necessary to apply the coating 5 to 7 or more times to form a coating film having a wall coating thickness of 1 mm. In this way, mass construction can not be done.

Also, to form the thickness, the putty type should be raised with the roller or the brush by using the trowel, and the epoxy and urethane which flow down should be continuously raised up to achieve the wall coating. However, there are considerable difficulties in brushing up a large area.

Korean Patent Registration No. 10-0354135 (Patent Document 1) discloses a wall patent method as a complementary material for permeable waterproofing to prevent cracking or leakage of a wall. However, this method is effective for preventing water leaking through the wall to be. Korean Patent No. 10-1105490 (Patent Document 2) is a patented method having a mortar function for prevention of salt corrosion and neutralization and for repairing a section, and is a patent related to wall mortar for preventing water leaking through wet wall patent or concrete. Korean Patent No. 10-0366339 discloses how difficult it is to form a wall thickness enough to use a wire mesh and an anchor bolt to maintain the thickness of a wall by waterproofing the wall using FRP, a wire netting, and an anchor bolt I will disprove.

On the other hand, the present invention uses epoxy which is the best adhesive known so far as a primer by using this wall coating technique such as water tank, sewage septic tank, road railing, building outer wall and iron plate roof, and has elasticity, waterproof performance, This is to achieve a coating material having the best urethane as a basic skeleton. However, in spite of this superiority, it is difficult to form the best existing product structure on the floor or to form a film thickness on the wall. The best materials on the floor are commonly used, but not on walls. If a new system such as the present invention is applied to a structure which is very thin and can not be flowed down but can not be repaired, Phosphorous structures can be used.

In order to increase the coating thickness, it is necessary to coat 5 ~ 7 times because the viscosity is lowered when it is applied to the wall surface of the concrete wall. Therefore, it is impossible to apply the coating several times while blocking the road used. The construction method applied by applying ~ 7 times can not be adopted because it obstructs or restricts the passage of vehicles for a long time and causes traffic congestion. There is a technical problem that is sufficient but can not be solved.

1. Korean Patent No. 10-0354135 2. Korean Patent No. 10-1105490 3. Korean Patent No. 10-0366339

A first object of the present invention which is devised to solve the above problems is to provide a concrete structure which can be applied by using a roller or a brush when a coating for forming a coating film having a thickness equal to or greater than a thickness And to provide a wall surface coating material which enables the surface to be coated. In other words, epoxy or urethane is applied to the wall without repeated application of 5 to 7 times. In this case, it is applied in the same form as that of applying ordinary paint to the wall, thereby forming epoxy or urethane coating over a certain thickness on the concrete wall, To provide a wall surface coating material having such an opposing function capable of flow prevention, thickness formation and roller work. Fig. 9 shows how difficult it is to fill a wall void formed at the time of pouring concrete with urethane coating. If these pores can be filled with rollers or brushes, it will be very useful for industries such as septic tank, water purification plant, water tank, swimming pool.

A second object of the present invention is to provide a method of coating a concrete surface of a concrete wall using a wall surface coating material capable of preventing flow, forming a wall, and performing a roller work so as to have excellent cohesion strength with existing walls, The present invention also provides a method of coating a surface of a wall which has a waterproof property while protecting the urethane from impact of an external chemical agent such as calcium chloride and shielding ultraviolet rays of sunlight for a long time. It is necessary to form a thickness thicker at a time by a roller, not a plaster knife as shown in FIG. 10, so that it can be widely used in industry.

In order to achieve the first object of the present invention, ultrafine stone powder of 1000 to 5000 mesh is first prepared. An epoxy-stone powder mixture obtained by mixing ultrafine stone powder in an epoxy volume ratio of 1: 0.5 to 1: 2.5, and an urea-added urethane which is obtained by mixing urethane with an increasing agent in a volume ratio of 70 to 90: 1. The ultrafine stone powder has a volume ratio A urethane-stone powder mixture prepared by mixing 1: 0.2 to 1: 1 Urethane / Stone powder mixture and Urethane: ultrafine stone powder not containing aging agent in a volume ratio of 1: 1 to 1: 2 is prepared. At this time, the bulk specific gravity (ultimate specific gravity) of the ultrafine stone powder used to prevent the flow of the mixture was 0.72. For reference, the ordinary gravity of 250-300 mesh powder (apparent specific gravity) is 1.84.

According to another aspect of the present invention, there is provided an epoxy-stone powder mixture comprising an epoxy and a stone powder having a particle size of 1000 to 5000 mesh in a ratio of 1: 0.5 to 2.5 (volume ratio) to a surface of a concrete wall, And a first step of applying an epoxy-stone powder mixed layer one to three times by using a brush. Here, the epoxy-stone powder mixture can be applied one to three times depending on the use of the wall.

The present invention also relates to a urethane-stone powder mixed with urethane which does not contain a thickener and a stone powder with a particle diameter of 1000 to 5000 mesh at a ratio of 1: 1 to 2 (volume ratio) to the surface of the epoxy- A urethane-stone powder mixture in which the urethane-stone powder mixture mixed with the urea-containing urethane and the thickener-containing urethane and the stone powder having a particle size of 1000 to 5000 mesh at a ratio of 1: 0.2 to 1 (volume ratio) And a second step of forming a urethane / stone powder mixed layer by coating the urethane-containing urethane-based urethane resin composition, wherein the urethane-containing urethane is mixed with urethane and a thickener in a ratio of 70 to 90: 1 (volume ratio) A stone powder mixture and / or a urethane-stone powder mixture and then curing them.

Workability and physical properties such as viscosity are inversely proportional. That is, when it is diluted, workability such as roller, brush, and spray is good. However, when it is applied to the wall, it flows down and the film thickness is not formed.

At this time, if there is a method in which a certain mixture is added to form a constant film thickness without flowing down with good workability, it can be widely used industrially and its utility value is very high.

The present invention is based on the fact that the self-loading is extremely fine even when the viscosity is raised for this purpose. For example, when you look at cotton, cotton can be made solid or floating in the air. So how do you get this effect on epoxy urethanes?

The correct answer is a very fine stone powder of 1000 to 5000 mesh. Normal stone powder is about 250 ~ 300 mesh, which is about flour. These stone powders have an effect of raising the viscosity when mixed with epoxy and urethane, but they have a high specific gravity and flow downward. When they are mixed more than a certain amount, they become stiff and workability is lowered. On the other hand, when mixing very fine stone powder of 1000 ~ 5000 mesh into epoxy and urethane, it is possible to make a film that does not flow down without affecting workability until mixing more than a certain amount.

This means that if the apparent specific gravity of the powder is about 1.84 when it is made of a common powder of the same weight, the apparent specific gravity is reduced to 0.72 when the powder is made from 1000 to 5000 mesh. In other words, when mixed with the same volume, they can be mixed with a relatively light weight. This means that viscosity is not increased without increasing the weight. Therefore, a coating film is formed which is operable while not spreading on the wall. This is expected to make a significant contribution to the application of the wall.

The anti-flow wall epoxy and urethane coating materials according to the present invention can be applied to the entire industry.

Epoxy and urethane mixed with 1000-5000 mesh stone powder are mixed with a certain volume, and when they are applied to the wall surface with the roller or brush, the viscosity is increased. do. This is difficult to obtain even if it is applied 5 to 6 times with ordinary epoxy urethane. On the other hand, in order to overcome this difficulty, as shown in FIG. 10, it is made into a putty type, and a very high viscosity is made, and the surface is coated with a trowel, and the surface is swept upward from the bottom by a brush. In this case, it is difficult to form a coating film having a thickness exceeding a certain thickness, and the surface is uneven, so that it is difficult to apply widely and the applicability is limited.

On the other hand, according to the present invention, when only a stone powder of 1000 to 5000 mesh is mixed, the ratio of Optimum optimum condition which does not roll down or flow down is found, and when it is mixed with epoxy or urethane, Is formed.

In this case, it is possible to use the rollers or brushes to form the desired film thickness in 2 ~ 3 times when the coating having the waterproof performance is applied to the wall of the building and the wall surface of the underground structure, Can be shortened and can be very usefully used.

In addition, road constructions are required to complete construction in a short time. Therefore, if it is widely used for structures such as roads and bridges, it is possible to maintain the waterproof performance of structures while minimizing traffic control, and thus it is possible to effectively maintain social overhead capital. In addition, this secured facility will reduce the cost of medical expenses due to the reduction of accidents, which will be used again for social welfare costs.

1 is a cross-sectional view showing a repair surface 10a before coating of the wall 10 with epoxy, urethane or the like.
FIG. 2 is a cross-sectional view of a wall surface of an epoxy-stone powder mixed layer 20a formed by applying an epoxy-stone powder mixture obtained by mixing ultrafine stone powder to a repair surface 10a of a wall 10 according to an embodiment of the present invention. Sectional view.
3 is a schematic view showing a state in which a urethane-stone powder mixture is first applied onto an epoxy-stone powder mixed layer 20a formed on a repair surface 10a of a wall 10 according to an embodiment of the present invention to form a first urethane- Sectional view of the wall body 20b.
4 is a view showing a state in which a urethane-stone powder mixture is secondarily applied onto a first urethane-stone powder mixed layer 20b formed on a repair surface 10a of a wall 10 according to an embodiment of the present invention, Sectional view of the wall formed with the powder mixed layer 20c.
5 is an enlarged sectional view taken along the line A 'in FIG.
FIG. 6 is a block diagram showing steps of applying epoxy and urethane, including ultrafine stone powder according to the present invention, on a repair surface 10a of a wall 10 according to an embodiment of the present invention.
Fig. 7 is a photograph of a defect image of a concrete structure with a coating of a concrete structure beneath the soundproof wall of the road, and a defect image of a road railing.
8 is a photograph showing a state in which a thin epoxy primer is applied and a urethane is applied thinly. It is a photograph showing that the problem of flowing down must be solved. I rolled the urethane thinly, but it was flowing down repeatedly and the flow marks repeatedly disappear.
FIG. 9 shows that the urethane first and urethane second coats are applied to the fountain concrete wall, but the pores formed at the time of concrete pouring are not completely filled, and it is difficult to fill the pores with the urethane coating.
Fig. 10 is a photograph of a scene in which a urethane is putty-like to solve the problem of flowing down, and is coated with a trowel. Much remains of earthy fur remains.
FIG. 11 (a) is a photograph of a wall surface of a concrete wall being obsolete, FIG. 11 (b) is a wall surface with a wall thickness of the concrete wall being removed by more than a predetermined thickness, Which is applied to the surface. There are many remnants of the earth by applying plaster over a certain thickness.
12 (a) is a photograph of a wall of a concrete wall being removed until the reinforcing bar is removed, and then painted with cement as shown in FIG. 12 (b) and then painted.
FIG. 13 (a) is a view showing the weight of ultra fine stone powder measured with an electronic scale after zero point adjustment to measure the weight of 100 cm3 (cc) of ultrafine stone powder used in the present invention. Fig. 13 (b) shows the weight of ordinary stone powder measured with an electronic scale after adjusting the weight of 100 cm3 (cc) of ordinary stone powder to 0 point.
14 (a) shows a state in which the volume ratio of the epoxy and ultrafine stone powder is 1: 0 and then the thickness is 0.3 mm. FIG. 14 (b) shows the volume ratio of the epoxy and ultrafine stone powder to 1 : 0.5, followed by coating with a thickness of 0.3 mm. Fig. 14 (c) shows a mixture of epoxy and ultrafine stone powder in a volume ratio of 1: 1, followed by coating with a thickness of 0.3 mm, 14 (d) shows a state in which the volume ratio of the epoxy and ultrafine stone powder is 1: 2 and then the thickness is 0.3 mm. FIG. 14 (e) shows the volume ratio of the epoxy and ultrafine stone powder to 1: 2.5, and then coated in a thickness of 0.3 mm. FIG. 14 (f) shows a mixture of epoxy and ultrafine stone powder at a volume ratio of 1: 3, , Fig. 14 (g) shows the volume ratio of the epoxy and ultrafine stone powder to 1: 4 After putting together, the roller was not so good that it was draped and it did not flow down.
15 (a) shows a state in which the volume ratio of the urethane and the ultrafine stone powder is 1: 0 and then it is applied in a thickness of 0.4 mm. FIG. 15 (b) : 0.2, followed by coating to a thickness of 0.4 mm. FIG. 15 (c) shows the volume ratio of the incremental additive-added urethane and ultrafine stone powder mixed in the ratio of 80: 1 in the urethane- 0 and then applied in a thickness of 0.4 mm. FIG. 15 (d) shows the volume ratio of the incremental urethane additive and ultrafine stone powder mixed in the ratio of 80: 1 by volume of the urethane to the urethane at a ratio of 1: 0.2 15 (e) shows a state in which the volume ratio of urethane and ultrafine stone powder is mixed at a ratio of 1: 1, followed by coating to a thickness of 0.4 mm, and Fig. 15 f) was prepared by mixing the volume ratio of urethane and ultrafine stone powder at 1: 1.5 and then adding 0.4 mm thick A state that the coating, Fig. 15 (g) is the volume ratio of the urethane and ultrafine stone powder 1 is coated with a look, and then a 0.4 mm thick mixture to two. FIG. 15 (h) shows a state in which the urethane and ultrafine stone powder are mixed together at a volume ratio of 1:

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It is to be understood, however, that the intention is not to limit the invention to the form just described, and that the spirit and scope of the invention encompass ordinary variations and equivalents of the described forms.

As an embodiment of the present invention, the wall surface coating material may be composed of an epoxy-stone powder mixture in which epoxy and stone powder having a particle diameter of 1000 to 5000 mesh are mixed at a ratio of 1: 0.5 to 2.5 (volume ratio).

In one embodiment of the present invention, the wall surface coating material includes a urethane-stone powder mixture in which urethane with no admixture and stone powder with a particle diameter of 1000 to 5000 mesh are mixed at a ratio of 1: 1 to 2 (volume ratio) Or a urethane-stone powder mixture in which urethane containing an increasing agent and stone powder having a particle diameter of 1,000 to 5,000 mesh are mixed at a ratio of 1: 0.2 to 1 (volume ratio), wherein the above- One urethane can be mixed with 70 to 90: 1 (by volume) urethane and a thickener.

Urethane and thickeners may be used in an amount of usually 50 to 100: 1. However, in the present invention, considering that the urethane-stone powder mixture is applied to the wall surface of the wall by using a roller or a brush, 1 (volume ratio). When the amount of the thickener is less than 90: 1, the viscosity is weak and it flows down during the coating. When the amount of the thickener is more than 70: 1, the viscosity increases. Therefore, it is applied at 70 ~ 90: 1 (volume ratio) in order to maximize the workability of rollers and brushing, but to prevent urethane and stone powder mixture from flowing down.

As an embodiment of the present invention, a method of coating a surface of a wall comprises the steps of mixing an epoxy-stone powder mixture obtained by mixing an epoxy and a stone powder having a particle size of 1000 to 5000 mesh in a ratio of 1: 0.5 to 2.5 (volume ratio) Or a brush, to form an epoxy-stone powder mixed layer. Such an epoxy-stone powder mixture may be applied to the surface of the wall of the septic tank for example once or three times and used as a waterproof layer.

In one aspect of the present invention, there is provided a method for coating a surface of a wall, comprising the steps of: applying urethane which does not contain a thickening agent to a surface of the epoxy-stone powder mixed layer; and stone powder having a particle size of 1000 to 5000 mesh in a ratio of 1: Or a mixture of urethane and stone powder mixed in a ratio of 1: 0.2 to 1 (volume ratio) is applied once or three times using a roller or a brush, or a urethane containing an increasing agent and a stone powder having a particle diameter of 1000 to 5000 mesh are mixed at a ratio of 1: And the mixture of urethane and stone powder is applied once or twice using a roller or a brush to form a urethane-stone powder mixed layer. At this time, the urethane containing urethane may be mixed with urethane at a ratio of 70 to 90: 1 (volume ratio).

The urethane-stone powder mixture can be applied once to the surface of a low-walled wall, such as a pool, for example, and to the surface of a wall, such as a railing on a roadway, twice.

A wall surface coating material having such characteristics can form a coating film having a thickness greater than a predetermined thickness without flowing down on the wall surface, and can be worked using a roller, a brush or the like because of its excellent workability.

In order to improve the adhesiveness when applying the coating material to the concrete wall by using the coating material, first the epoxy / stone powder mixture is applied first, then the urethane / stone powder mixture is applied first and then the urethane / · Secondly apply stone powder mixture. Then cure and use.

The epoxy and urethane coating materials containing the ultrafine stone powder not only form a repairing wall but also all of them including a new wall and a repairing wall are used to form a waterproofing layer.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing a conventional concrete or a new concrete wall 10 in the form of a repair surface 10a.

FIG. 2 shows a state in which an epoxy-stone powder mixed layer 20a is formed by applying an epoxy-stone powder mixture containing ultra-fine stone powder to a repair surface 10a of the wall 10, And the epoxy coating material of the present invention simultaneously serves as a primer and a base coat. As seen from the left side of FIG. 8 and the primer applied on the left side of FIG. 10, the primer is applied thinly so that the bottom can be seen, but it is not a concept of forming a coating film like the present invention. On the right side of the picture on the right side of Fig. 8, the floor is covered with epoxy mortar. In this way, if the epoxy mortar is applied to the wall, it will be strong and it will be good. A very successful wall will be formed if it serves as a primer and base coat, as in the present invention.

3 is a cross-sectional view of a wall formed by first coating a urethane-stone powder mixture containing ultrafine stone powder on an epoxy-stone powder mixed layer 20a to form a first urethane-stone powder mixed layer 20b. It contains ultrafine stone powder to form a coating over a certain thickness on the wall, while forming a urethane coating that is strong against sunlight, even when working with a roller or a brush.

4 is a cross-sectional view of a wall formed by applying a urethane-stone powder mixture containing ultrafine stone powder on a first urethane-stone powder mixed layer 20b to form a second urethane-stone powder mixed layer 20c. By doing so, the thickness of the urethane-stone powder mixed layer can be made thicker so that the wall 10 can be protected from sunlight and water for a long time to become a semi-permanent wall.

FIG. 5 shows a detailed cross-sectional view in which the section A of FIG. 4 is separated and enlarged in order to view the section in more detail. As shown in FIG. 5, the ultrafine stone powder 30 is dispersed in the epoxy-stone powder mixed layer 20a, the first urethane-stone powder mixed layer 20b and the second urethane-stone powder mixed layer 20c, And it can be understood that it is contained.

As shown in FIG. 8, when a general urethane is applied to a wall, it is impossible to form a thick film at a time. Otherwise, the coating material runs down like a tear. If the rollers continue to be applied at the time of construction of the wall of the civil engineering wall having a large area, there is no workability and the use can not be carried out.

FIG. 6 shows such a construction step as a block by block. Referring to FIG. 6, a wall surface coating method according to an embodiment of the present invention includes:

A first coating step (S1) of applying an epoxy-stone powder mixture on the wall surface, a second coating step (S2) of applying a urethane-stone powder mixture in a primary coating, and a second coating step A third coating step S3 and a curing step S4 for curing each coating material.

In this case, in the case of an underground wall such as a sewage water line, since it is not exposed to sunlight and a special waterproofing performance is required, the first application step S1 is performed three times in succession, and then the second application step S2 and the third application step (S3) can be omitted.

In the left picture of FIG. 7, a coating film is formed on the concrete wall for the soundproofing wall, which is partially peeled off. In this case, if a crick or a partial drop occurs in the wall, even if there is no abnormality in the soundproof wall, there is a safety problem, and the demolition should be done. This phenomenon is happening everywhere and it is something to worry about a lot in the future. In the right picture of FIG. 7, the road railing is aged and the cement is corroded and the reinforcing bars are exposed.

The left side of FIG. 8 shows a thin coating of urethane on the concrete wall after the thin epoxy coating, and the right side of FIG. 8 shows a urethane coated on the wall with a thin layer of coating, to be. The left side of Fig. 9 is the first coating of urethane coating on the fountain concrete wall, and the right side of Fig. 9 is the second coating of urethane coating on the fountain concrete wall. It can be seen that the pore remains even after the second application of urethane. Therefore, if the coating thickness of the epoxy coating material is increased and the coating thickness of the urethane coating material is increased as in the present invention, the coating material of the concrete wall will contribute to the application of the concrete wall if the roller can be worked with a quality or a brush.

In order to solve this problem and to form a uniform film thickness at once, a method of putting a urethane into a putty type and using a rubber plaster to make a wall surface is used as shown in Fig. 10. However, This is a work process where you need to continue to add additional rollers and brushes, and to keep the flowing urethane down with a roller or brush. Small area is possible, but it is difficult to apply it to walls with high height of underground facilities or walls such as roads and bridges. It is very difficult to apply because it requires a long traffic control, and even if it is applied, it is difficult to adopt it continuously because it is not economical because it takes a lot of construction expenses.

FIG. 11 shows an existing method of repairing a road railing, in which the road railing is much aged and needs repairing, as shown in FIG. 11 (a), where a lot of cement has been removed and a lot of sand has been left. In order to repair such an elevated rail, the surface was removed to about 5 mm as shown in FIG. 11 (b). Then, the coating was finished by coating the wall with putty urethane. Because of the putty Urethane, there is a lot of dirt scarcely found in the completed form in Figure 11 (c). The city is in a state of contradiction to the trend of design and appearance being very important.

Fig. 12 (a) is a view showing a state in which the concrete that has been corroded so as to allow the rebar to protrude for maintenance of the bridge median separator is removed, and Fig. 12 (b) is a state in which the concrete is coated with cement mortar and completed. It can be seen that the angle between the horizontal part and the vertical part in FIG. 12 (b) shows a sharp angle. It can be seen that it is thinly coated but not any waterproof coating. Therefore, it can be seen that when a certain period of time has elapsed, corrosion again occurs and the same repairing is required.

If the repair is carried out using the present invention, there is no step of cutting or demolishing the repair surface 10a of the concrete wall 10 as shown in Figs. 11 (b) and 12 (a) (c), the construction would have proceeded by a method other than the method of inserting the urethane. That is, the wall surface is washed with a high-pressure water or slightly grinded, and an epoxy-stone powder mixture containing ultrafine stone powder is applied (S1) by using a roller, and then a urethane-stone powder mixture containing ultra- (S2). Then, if necessary, the urethane-stone powder mixture containing ultrafine stone powder may be applied to the secondary coating (S3) using a roller.

As shown in Figs. 13 (a) and 13 (b), the average specific gravity of the ordinary stone powder is 1.84 and the apparent specific gravity of the ultrafine stone powder is 0.72. As shown in Table 1 and Fig. 13 (a), the ultrafine stone powder has a bulk specific gravity (apparent specific gravity) of 0.72 which is smaller than the specific gravity of water 1 and is solid when mixed with an epoxy or urethane liquid phase. However, It does not flow down, but the epoxy and urethane liquid are combined mainly with the light ultrafine stone powder, and it plays a role not to flow down.

As shown in FIG. 14 (a), the epoxy which is not mixed with the ultrafine stone powder in the epoxy can not form a 0.3 mm film on the wall, and flows down to the bottom plate. As a result, the film thickness can not be formed.

On the other hand, as shown in FIG. 14 (b), FIG. 14 (c), FIG. 14 (d), and FIG. 14 (e), the volume ratio of epoxy: ultrafine stone powder was 1: 0.5, 1: 1: 2, and 1: 2.5, it can be seen that the coating film is formed with roller quality and brushing.

Therefore, the conventional method is not the concept that the coating is formed on the concrete surface like the epoxy coated on the concrete surface on the left side of FIG. The adhesive strength and the strength are good because epoxy is good. It is better to use a primer over a certain thickness. However, since the epoxy material is diluted with conventional materials and methods, it can not be applied thickly on the wall.

As a result, as shown in FIG. 14 (b) to FIG. 14 (e), the volume ratio of epoxy to ultrafine stone powder was 1: 0.5 to 1: 2.5, mm is formed. There is no new concept of applying epoxy to walls over 0.3 mm.

As shown in FIG. 14 (f), when the ratio of the volume ratio of epoxy: ultrafine stone powder is 1: 3, roller quality and brushing are impossible, and the wall surface is troweled. It can be seen that a certain portion is flowing down. As shown in Fig. 14 (g), it can be seen that when the volume ratio of epoxy: ultrafine stone powder is 1: 4, roller quality and brushing are impossible, and there is no trowel on the wall surface and no part flow down.

As shown in Fig. 15 (a), urethane in which urethane is not mixed with ultrafine stone powder can not form a coating film of 0.4 mm on the wall surface, and flows down to the bottom plate. As a result, the film thickness can not be formed. As shown in FIG. 15 (b), when the ultrafine stone powder is mixed with the urethane at a volume ratio of 1: 0.2, a coating film of urethane 0.4 mm can not be formed on the wall surface, and flows down to the bottom plate. As a result, the film thickness can not be formed.

In order to solve this problem, it is possible to use up to a certain percentage of the incremental agent. As shown in FIG. 15 (c), when an ultrafine stone powder was added at a volume ratio of 1: 0 to an incremental urethane added with a ratio of urethane: thickener of 80: 1 by volume, an increasing agent was added, but ultrafine stone powder If you do not mix it, you can see that it also flows down and spreads on the bottom plate. Therefore, a coating film of urethane 0.4 mm can not be formed on the wall surface, and the coating film thickness can not be formed.

On the other hand, as shown in FIG. 15 (d), when the urethane additive is mixed with the incremental urethane added in the volume ratio of 80: 1, the ultrafine stone powder is added to the urethane at a ratio of 1: 0.2, It can be seen that when 20% by volume of fine stone powder is mixed with urethane, it does not flow down to the bottom plate. Therefore, a coating film of urethane 0.4 mm can be formed on the wall surface.

This is very important because it is added to urethane and it is applied to the wall surface and it does not form a coating film. Even if the ultrafine stone powder is mixed with urethane at a volume ratio of 20%, it can not flow to form a coating film. The ratio of urethane: To 80: 1, and when the urethane added with the thickener is mixed with 20% by volume of the ultrafine stone powder, as shown in FIG. 15 (d), it does not flow. As shown in Table 1 and Fig. 13 (a), the urethane was stuck to the ultrafine stone powder, which had an aspect ratio of 0.72, which was lighter than water, so that these clusters were connected and the result was not flowing on the wall. In the case of ordinary stone powder, as shown in Table 1 and Fig. 13 (b), the void ratio is 1.84, so the stone powder particles flow down due to the urethane being dragged downward.

On the other hand, as shown in Figs. 15 (e), 14 (f) and 14 (g), when the volume ratio of urethane: ultrafine stone powder is 1: 1, 1: 1.5, It is a section where there is no flow down to the bottom while being brushed and forming a coating film of 0.4 mm. In this section, it can be seen that a mixture of ultrafine stone powder alone forms a coating film of 0.4 mm at a time without flowing down to the bottom without the use of an increasing agent.

However, as shown in FIG. 15 (h), when the ratio of the urethane: ultrafine stone powder to the volume ratio is 1: 3, roller quality and brushing can not be performed, and it is necessary to dress with trowel and do not flow down to the floor.

As can be seen from the above, the core of the present invention is that the epoxy-stone powder mixture and the urethane-stone powder mixture do not flow down and form a certain thickness in the wall as rollers or brushes are formed. The composition ratio thereof is 1: 0.5 to 1: 2.5 in volume ratio of epoxy: ultrafine stone powder, 1: 0.2 to 1: 1 in volume ratio of urethane and ultrafine stone powder to which an incrementing agent is added, : The volume ratio of ultrafine stone powder was 1: 1 to 1: 2.

KS, etc., there is no quantified method for flow resistance and it is a reality to carry out visual inspection and various tests are carried out for the bottom surface. Actually, epoxy urethane is applied on the wall surface, In the field.

Fig. 9 is a photograph of the wall in the actual fountain. Fig. Therefore, Korean Patent No. 10-0366339 (Patent Document 3) proposes a waterproofing method of a wall using FRP, a wire netting and an anchor bolt. In the waterproofing method, If any part of the wall is always thin or defective, it will continue to get wet, leading to a total deficiency.

In order to solve this problem, in the present invention, since epoxy is thinner than urethane, the standard of applying 0.3 mm to one application is established, and since urethane is less diluted than epoxy, application of 0.4 mm is applied to one application I set the standard. It is a new method of forming a film over a certain thickness with roller or brush on the wall in a very simple and innovative way.

Although the blending section of the above-mentioned epoxy or urethane mixed with the ultrafine stone powder and forming the roller or the brush with a predetermined film thickness or more is proposed, the function of using ultrafine stone powder by using epoxy or urethane is out of the range It is a matter of course that the concept of use must be widely acknowledged.

[Test Example]

In order to prepare an epoxy and urethane coating material containing ultrafine stone powder, first, a rapid-hard epoxy and a stone powder having a particle size of 1000 mesh are mixed in a volume ratio of 1: 0 to 1: 4 (detailed volume ratio is shown in Table 2) A material obtained by mixing a stone powder of mesh in a volume ratio of 1: 0 to 1: 3 (with a specific volume ratio as shown in Table 3) is prepared and mixed in the proportions to prepare a first test body and a second test body.

The apparent specific gravity of ultrafine stone powder and ordinary stone powder was measured, and flow resistances of the first and second test specimens were respectively measured. The results are shown in Tables 1 to 3 below.

To measure the apparent specific gravity of ultrafine stone powder and ordinary stone powder, first prepare a 100 cm3 beaker and then prepare an electronic balance capable of precise measurement up to 500 g. Place a beaker of 100 cm3 (cc) empty on the electronic balance first and perform zero calibration. Next, 100 cm3 (cc) of a 250 mesh ordinary stone powder is taken into a 100 cm3 (cc) beaker and the weight is measured. At this time, you should put it on the bottom of the floor four or five times, so that the usual stone powder is available. Again, 100 cm3 (cc) of 1000 mesh ultrafine stone powder is sampled in a 100 cm3 (cc) beaker and the weight is measured. At this time, it will be put on the bottom of the floor 4 times, so that ultrafine stone powder that is possible is packed tightly.

The width of the test plate for making the first test piece and the second test piece was 20 cm x 27 cm, the first test piece was applied at a thickness of 0.3 mm, and the second test piece was applied at a thickness of 0.4 mm. For this purpose, the first test specimen is 20 cm x 27 cm x 0.03 cm = 16.2 cm 2, so 16.2 cm 3 of an epoxy-stone powder mixture containing ultrafine stone powder is applied and applied to a 20 cm x 27 cm test plate using a brush or roller. At this time, since the test plate is vertically erected, it is necessary to place the bottom plate on the floor separately to visually observe the amount and condition of the flow on the bottom.

The second specimen is 20 cm x 27 cm x 0.04 cm = 21.6 cm in the test specimen of 20 cm x 27 cm, so that the second specimen is coated with a thickness of 0.4 mm. Therefore, the second specimen is 20 cm x 27 cm x 0.04 cm = Apply a 20 cm x 27 cm test plate using a brush or roller. At this time, since the test plate is vertically erected, it is necessary to place the bottom plate on the floor separately to visually observe the amount and condition of the flow on the bottom.

On the other hand, when the urethane: ultrafine stone powder was tested using a thickener at a ratio of 1: 0 to 1: 0.2 (volume ratio), urethane: thickener = 80: 1 (volume ratio) And ultrafine stone powder were mixed at a ratio of 1: 0 to 1: 0.2 (volume ratio).

Test of apparent specific gravity sample unit Results Test Methods Ultra Fine Stone Powder g / cm3 0.72 Compliant with KS M ISO787-11
Normal Stone Powder g / cm3 1.84

Epoxy coating with ultrafine stone powder Resistance to flow Composition ratio Examination photo Results Opinion Epoxy: Ultrafine Powder
1: 0 Epo: Powder
1: 0 Flow down
Roller available Film thickness
Not formed Epoxy: Ultrafine Powder
1: 0.5 Epo: Powder
1: 0.5 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Epoxy: Ultrafine Powder
1: 1 Epo: Powder
1: 1 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Epoxy: Ultrafine Powder
1: 2 Epo: Powder
1: 2 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Epoxy: Ultrafine Powder
1: 2.5 Epo: Powder
1: 2.5 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Epoxy: Ultrafine Powder
1: 3 Epo: Powder
1: 3 Does not flow down
Roller not possible It does not flow down,
No work Epoxy: Ultrafine Powder
1: 4 Epo: Powder
1: 4 Does not flow down
Roller not possible Can be used for patching

Urethane coating with ultrafine stone powder and thickener Resistant to flow Composition ratio Examination photo Results Opinion Urethane: Ultrafine powder
1: 0 Ure: Powder
1: 0 Flow down
Roller available Film thickness
Not formed Urethane: Ultrafine powder
1: 0.2 Ure: Powder
1: 0.2 Flow down
Roller available Film thickness
Not formed Urethane: Ultrafine powder
1: 0 +
Add thickener 1/80 Ure: Powder
1: 0,
Mix: Add = 80: 1 Flow down
Roller available Film thickness
Not formed Urethane: Ultrafine powder
1: 0.2 +
Add thickener 1/80 Ure: Powder
1: 0.2,
Mix: Add = 80: 1 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Urethane: Ultrafine powder
1: 1 Ure: Powder
1: 1 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Urethane: Ultrafine powder
1: 1.5 Ure: Powder
1: 1.5 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Urethane: Ultrafine powder
1: 2 Ure: Powder
1: 2 Does not flow down
Roller available Since it does not flow downward,
Thickness formed Urethane: Ultrafine powder
1: 3 Ure: Powder
1: 3 Does not flow down
Roller not possible Can be used for patching

(1) Analysis of apparent specific gravity

The density of the ordinary stone powder having a density of 250 mesh is 1.84, and the density (density) of the ultrafine stone powder of 1000 mesh is 0.72. That is, a powder having a volume twice or more of the same weight is formed. Meanwhile, the specific gravity of the epoxy is 1.03 and the specific gravity of the urethane is 1.05.

(2) Flow resistance analysis

The flow resistance of the first specimen was tested at 1: 0, 1: 0.5, 1: 1, 1: 2, 1: 2.5, 1: 3 and 1: 4 in volume ratio of epoxy: ultrafine stone powder It can be seen that the range of the blend capable of roller or brushing work is 1: 0.5 to 1: 2.5.

The flow resistance of the second specimen was 1: 0, 1: 1, 0.2: 1, 0.2: 1, 1: 1, 1: 1.5, 1: 2 and 1: 3. The range of blends that can be used for roller or brushing is urethane and ultrafine powder added with 80: 1 by volume ratio of urethane and thickener 1 (incremental addition): 0.2 1 to 1 (incremental addition): 1 to 1 and a ratio of urethane and ultrafine stone powder to which no aging agent is added is 1: 1 to 1: 2.

Test images of the apparent specific gravity analysis are shown in Figs. 13 (a) to 13 (b).

Test images for the first test piece are shown in Figs. 14 (a) to 14 (g), and test photographs for the second test piece are shown in Figs. 15 (a) to 15 (h).

The stone powder having a general particle diameter of about 250 mesh in the analysis of the bulk density (density) is 184 g at 100 cm 3, and the ultrafine stone powder of the present invention having a particle diameter of 1000 mesh is 72 g at 100 cm 3. In other words, it can be seen that when mixing the same volume of powder, only a much lighter weight is added, and since the specific gravity is 0.72, which is much lighter than the water 1, the smaller the volume per unit weight is.

That is, when the same amount of stone powder is mixed with epoxy or urethane, the weight of ordinary stone powder having a particle size of 250 mesh is 1.8 times or more higher than that of ultrafine stone powder.

However, when the ultrafine stone powder is added, the weight change is reduced by 28% because of the high specific gravity (apparent specific gravity) of 0.72. When mixed with epoxy or urethane, ultrafine stone powder tends to float instead of flowing down. The liquid is connected around the ultrafine stone powder. Instead, it plays the role of lifting the epoxy or urethane liquid. Therefore, even if the vertical wall is rolled or scratched, the coating film having a certain thickness or more is formed without flowing down.

A more detailed analysis of the flow resistance analysis of the epoxy-stone powder mixture shows that in FIG. 14 (a) where the volume ratio of epoxy: ultrafine stone powder is 1: 0, the epoxy liquid flows down to form a certain area on the bottom plate. That is, the film thickness can not be formed on the wall because the wall thickness is not formed on the wall. The object of the present invention is to overcome the scope of the invention because it is possible to form rollers or brushes and to have a thickness of more than a certain thickness on the wall surface. In Fig. 14 (b) where the volume ratio of epoxy: ultrafine stone powder is 1: 0.5, there is no trace of the epoxy / stone powder mixture flowing down the bottom plate. Roller work is also possible. 14 (c), which shows a volume ratio of epoxy: ultrafine stone powder of 1: 1, FIG. 14 (d) with a volume ratio of epoxy: ultrafine stone powder of 1: 2, epoxy: ultrafine stone powder In Figure 14 (e), which has a volume ratio of 1: 2.5, it is also possible to roll down the epoxy-stone powder mixture down to the bottom without any trace of the bottom plate.

On the other hand, in FIG. 14 (f) where the volume ratio of epoxy: ultrafine stone powder is 1: 3, the roller operation is impossible and the epoxy-stone powder mixture is partially flowed. In Figure 14 (g) where the volume ratio of epoxy: ultrafine stone powder is 1: 4, the roller operation is impossible and the epoxy / stone powder mixture does not flow down. Therefore, the mixing ratio of epoxy: ultrafine stone powder at a volume ratio of 1: 4 can be very useful for the fetching treatment in which the concrete structure is buried.

15 (a) to 15 (b) in which the volume ratio of epoxy: ultrafine stone powder is 1: 0 to 1: 0.2, the flow resistance of the urethane- The liquid flows down to form a certain area on the bottom plate. That is, the film thickness can not be formed on the wall because the wall thickness is not formed on the wall. The object of the present invention is to overcome the scope of the present invention because it is possible to form a roller with a certain thickness or more on the wall surface. 15 (c), when the blending ratio of the urethane with the incrementing agent and the ultrafine stone powder mixed at a volume ratio of 1: 0, that is, the incrementing agent without adding the ultrafine stone powder, was added to the urethane at a ratio of 80: As you can see, urethane flows down to the bottom plate.

On the other hand, when 20% by volume of the ultrafine stone powder is mixed in the blend ratio of 1: 0.2 by volume, that is, the incremental urethane added with the incrementing agent-containing urethane and ultrafine stone powder mixed in the urethane with the increasing agent at a volume ratio of 80: As shown in Fig. 15 (d), the urethane-stone powder mixture does not flow down to the bottom plate. In Fig. 15 (e), Fig. 15 (f) and Fig. 15 (g) in which the volume ratio of urethane: ultrafine stone powder is 1: 1, 1: 1.5 and 1: 2, a urethane- Roller work is also possible without any trace on the bottom plate. However, in Figure 15 (h) in which the volume ratio of urethane: ultrafine stone powder is 1: 3, the urethane / stone powder mixture does not flow down, but the roller operation is impossible. Therefore, it is very useful to use as a depressing material for a recess formed on a wall with the mixing ratio of Fig. 15 (h) in which the volume ratio of urethane: ultrafine stone powder is 1: 3.

Therefore, the volume ratio ratio of the epoxy and urethane of the present invention and ultrafine stone powder of 1000 to 5000 mesh is such that the mixing volume ratio of the epoxy: ultrafine stone powder is 1: 0.5 to 1: 2.5, the incrementally added urethane: ultrafine The mixing volume ratio of the urethane: ultrafine stone powder to which the incrementing agent is not added is set to be 1: 0.2 to 1: 1.

10: wall 10a: maintenance surface
20a: Epoxy stone powder mixed layer
20b: first urethane-stone powder mixed layer
20c: Second urethane-stone powder mixed layer
30: Ultra Fine Stone Powder

Claims (4)

As a wall surface coating material,
And an epoxy-stone powder mixture in which epoxy and stone powder having a particle size of 1000 to 5000 mesh are mixed at a ratio of 1: 0.5 to 2.5 (volume ratio). The method according to claim 1,
A urethane-stone powder mixture in which urethane having no incremental agent and a stone powder having a particle diameter of 1000 to 5000 mesh are mixed at a ratio of 1: 1 to 2 (volume ratio), urethane containing an increasing agent, Wherein the urethane-stone powder mixture is a mixture of a urethane and a stone powder mixed in a ratio of 1: 0.2 to 1 (volume ratio) of a mesh-like stone powder, wherein the urethane-containing urethane is mixed with urethane and a thickener in a ratio of 70 to 90: 1 Wherein the wall surface coating material is a surface coating material. As a wall surface coating method,
Epoxy powder and stone powder having a particle size of 1000 to 5000 mesh were mixed in a ratio of 1: 0.5 to 2.5 (volume ratio) to the wall surface, and the mixture was applied once to three times using a roller or a brush, And a first step of forming a stone powder mixed layer. The method of claim 3,
A urethane-stone powder mixture in which urethane which does not contain a thickening agent and stone powder having a particle diameter of 1000 to 5000 mesh are mixed in a ratio of 1: 1 to 2 (volume ratio) to the surface of the epoxy-stone powder mixed layer, And a stone powder having a particle diameter of 1,000 to 5,000 mesh at a ratio of 1: 0.2 to 1 (volume ratio) were applied once or twice using a roller or a brush to form a urethane-stone And a second step of forming a powder mixed layer, wherein the urethane containing urethane is mixed with the urethane and the thickener in a ratio of 70 to 90: 1 (volume ratio).

Images