JPS6010058B2 - Curable mixture for orbits - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a curable mixture having excellent properties that can be applied to grouting materials for slab tracks, ballast tracks, etc. in railways.

More specifically, blue emulsions, liquid or emulsified epoxy resins, hardeners and cements, with or without the addition of water or further, if necessary, aggregates, fillers and/or blowing agents. The present invention relates to a curable mixture for track. Traditionally, as a grouting material for slab tracks in railways, a fluid mixture of asphalt emulsion, cement, and sand with a small amount of foaming agent added and kneaded with water (hereinafter referred to as cement-asphalt mortar) is used. It is used.

The CA mortar layer is located in the gap between the concrete base of the foundation and the concrete slab that directly connects the rail, and is provided as a layer that absorbs and disperses the load, shock, vibration, etc. when the wheels pass over the rails.

The slab track construction method that uses CA mortar for grouting is
It has the advantage of being simple to construct and easy to maintain. However, when railways are located in cold regions, the effects of winter snowfall and the accompanying freezing and thawing are severe, so conventional CA
There is a demand for something that is even more waterproof than mortar, more resistant to freezing and thawing, and more durable. An object of the present invention is to provide a curable mixture that is more waterproof than conventional CA mortars, has greater freeze-thaw resistance, and is superior in chemical resistance, weather resistance, durability, etc. The object of the present invention is to provide a curable mixture of the present invention, namely a blue emulsion and an epoxy resin in liquid or emulsified form.
Curing agent: 98:2 (converted to moisture-free), 40:6
In addition to blending cement within a weight ratio of 0, the total amount of cement, liquid or emulsified epoxy resin, curing agent, and cement is 2% and 6% in terms of water-free content.
This can be achieved by a curable mixture formed by adding % by weight of 100% by weight, and optionally aggregates, fillers and/or blowing agents, with or without the addition of water.

Next, embodiments of the present invention will be described.

The blue emulsion that can be used in the present invention is as follows. i.e., asphalt such as straight asphalt, floated asphalt, propane denoising asphalt, cutback asphalt, natural asphalt, etc., tar, tar pitch, fatty acid pitch, tall oil pitch, heavy mineral oil, other noisy substances, and pyel-blue analogues. An emulsifier, an emulsifying aid, or a stabilizer can be used as an emulsifier, an emulsifying aid, or a stabilizer. There is a bonito blue emulsion that is made by dispersing fine particles in water using a suitable method. Elastomer-modified bituminous emulsions obtained by further adding and mixing emulsified elastomers such as rubber latex and thermoplastic polymer resin emulsions to these noise emulsions can also be used in the present invention. In addition, rubber latex (as it is in an emulsified elastomer such as a thermoplastic polymer polymer resin emulsion) or added with emulsifiers, emulsifying aids, stabilizers, etc. as necessary, can be added to the aqueous phase with the above-mentioned elastomers or An emulsion containing an elastomer and an elastomer made by dispersing an elastomer-modified elastomer into fine particles can also be used in the present invention.An emulsifier such as a homogenizer, a colloid mill, or a homomixer is used for the emulsification method. Depending on the main emulsifying agent, the blue emulsion can be of nonionic type, anionic type, or
There are cationic, amphoteric, and clay-type emulsions, and any type of emulsion can be used in the present invention. The elastomeric rubbers mentioned above include natural rubber, isoprene rubber, styrene-butadiene rubber, styrene-butadiene block polymer rubber, styrene-isoprene rubber, styrene-isoprene block polymer rubber, chloroprene rubber, butyl rubber, nitrile rubber, butadiene rubber, etc. The thermoplastic polymer resin in the elastomer is a hard-acid vinyl polymer, an ethylene/hard-acid vinyl copolymer, an acrylic ester,
Severely acidic vinyl copolymer, maleic acid ester/accurate vinyl copolymer, vinyl chloride/accurately vinyl copolymer,
Acrylic acid ester polymers, styrene/acrylic acid ester copolymers, acrylic ester copolymers, vinyl chloride polymers, and copolymers such as vinylidene chloride polymers. Some are used as a mixture in addition to the oak blue emulsion, but most are used in the form of latex or emulsion, and are used singly or in combination of two or more. Among the oak blue emulsions mentioned above, A roaring emulsion containing an elastomer is excellent in that it significantly improves the physical properties of the cured product obtained by curing the curable mixture, such as toughness, handleability, elongation-compression recovery, impact resistance, and low-temperature impact resistance. This effect is particularly remarkable when increasing the amount of elastomer.As for the types of green materials, asphalt is superior to tar in terms of elasticity, malleability, low-temperature resistance, weather resistance, etc., but it has poor oil resistance and water resistance. Tar is superior in terms of properties.These emulsions can be selected according to the intended use of the curable mixture.The water content of the oak blue emulsion should be as high as possible for workability. good.

This reduces the moisture content of the curable mixture, facilitates moisture control, prevents excess moisture from being mixed into the solidified material when the curable mixture solidifies, and is useful for improving the physical properties of the solidified material. The water content of the light blue emulsion is preferably 5% by weight or less, preferably 4% by weight or less. In particular, when using aggregates and fillers without mixing them, a higher concentration is better. In the elastomer-containing blue emulsion, one having a water content as high as 2% by weight or less can be effectively used. The epoxy resin used in the present invention is a liquid or solid resin whose main component is a compound having one or more epoxy groups in one molecule.

The most common epoxy resins are bisphenol A and EPIC. Liquid or solid resins of ruhydrin condensates (mainly consisting of glycidyl ether of bisphenol A) such as Epicote 815, 8288341
001, 1004 (both Shell Chemical, trade names), etc. In addition, glycidyl ether of bisphenol F, dimer acid glycidyl ether, polyalkylene glycol glycidyl ether, glycidyl ether of bisphenol A alkylene oxide adduct, aliphatic glycidyl ether, urethane-modified pisphenol glycidyl ether, Examples include aliphatic aromatic co-condensed glycidyl ether, vinyl cyclohexane dioxide, dicyclobentadiene oxide, and hydrogenated bisphenol glycidyl ether. These epoxy resins are one or two types.
Use by mixing more than one species. It is also possible to add substances that promote the curing reaction between the epoxy resin and the curing agent, such as phenol, cresol, alkylphenol, salicylic acid, triphenyl phosphate, and furfuryl alcohol. Furthermore, compatibility with elastomers,
For the purpose of improving adhesion, water dispersibility, etc., these epoxy resins are added with rodin or hydrogenated odine and their derivatives, petroleum resins or hydrogenated petroleum resins and their derivatives, xylene resin, alkylphenol resin, and terbenes. resin,
Coumaron resin, pine oil, plasticizer, chick oil, oil, solvent,
Nonionic surfactants, fatty acids, resin acids, tall oil, roaring substances, reactive diluents having epoxy groups, and the like can also be added. The above-mentioned epoxy resin or modified epoxy resin is used in the form of an emulsion by emulsifying it in water, in the aqueous phase of a noise emulsion, or in the aqueous phase of an elastomer latex. During emulsification, emulsifiers, emulsification aids, stabilizers, etc. are added to these aqueous phases to make them easier to emulsify.
The mixture is appropriately overflowed and emulsified using an emulsifying machine. There are also resins modified to be easily dispersed in water by adding emulsifiers and the like to the above-mentioned epoxy resins, and resins modified to be easily dispersed in water by other methods. for example,
Epicoat D x 255 is a water-dispersible epoxy resin.
(Shell Chemical, trade name, liquid anhydride, bisphenol A
glycidyl ether type). When these are added to water and thoroughly mixed with a punch, they will be dispersed in a milky state, so they can be used either dispersed in water or in the aqueous phase of an emulsion, or used as is. Emulsified epoxy resin is
It may be nonionic, anionic, cationic, or amphoteric.

In general, nonionic types are convenient in that they can be easily mixed with anionic or cationic emulsified substances. The water content in the emulsified epoxy resin is preferably 5% by weight or less, preferably 4% by weight or less so as not to impair the physical properties of the epoxy resin curable composition finally obtained. In order to reduce the amount of water in the epoxy resin, it is preferable to disperse the epoxy resin in the aqueous phase of the above-mentioned light blue emulsion and use it in the form of an emulsion. A mixed emulsion with a moisture content of 25% by weight or less can be obtained. The curing agent used in the present invention is
The main component is a compound that has a functional group that reacts with an epoxy group in one molecule.

Specifically, a commonly known one is used. For example, aliphatic polyamines, aromatic polyamines, cycloaliphatic polyamines, aliphatic hydroxy polyamines, modified polyamines thereof, amine adducts thereof, polyamides, ketimines, tertiary amine imidazoles, BF3 amine complexes, acid anhydrides, Examples include dimer acid, trimer acid, and liquid polysulfide rubber. Among these, some preferred examples include aliphatic polyamines such as jethylenetriamine, triethylenetetramine, tetraethylenebentamine, diethylaminopropylamine, hexamethylenediamine, piperazine, N-aminoethylpiverazine, N - Cycloaliphatic polyamines such as aminoethylimidazoline, aliphatic hydroxyamines such as aminoethylethanolamine, monohydroxyethyldiethylenetriamine, phenylenediamine, xylesodiamine, dimethyldiphenylmethane, tridimethylaminoethylphenol, These include aromatic polyamines such as diaminodiphenyl sulfone, dimer acids, trimer acids, polyamides obtained by condensing these acids with diamines or polyamines, and modified amines and amine adducts of these. These curing agents mentioned above are used alone or in combination of two or more. Among the curing agents, those that are water-soluble or water-dispersible are used as they are, or in the form of an aqueous solution or dispersed in water. A curing agent that is insoluble or non-dispersible in water is used after being dispersed in water using an appropriate surfactant, dispersant, acid, or the like. The water content in the curing agent prepared as described above is preferably as low as possible for the same reason as the epoxy resin. Excess moisture can be avoided by dissolving or dispersing the curing agent in the aqueous phase of the emulsified elastomer. Further, an elastomer, a resin, a fat, a key oil, a plasticizer, an elastomer, etc. may be added to the curing agent in advance and used as an emulsifier. Furthermore, a hardening agent or an emulsion of a hardening agent obtained by modifying the above-mentioned hardening agent so as to be easily dispersed in water can also be used. These include, for example, the water-dispersible polyamide curing agent EpiCure 32554255 (both manufactured by Shell Chemical, trade name, liquid anhydride). The quantitative ratio of the epoxy resin and curing agent used in the present invention is allowed within a relatively wide range centered on the equivalent value that is the basis of the bonding reaction between the two, but it is preferable to use the equivalent value or a ratio close to the equivalent value. This is desirable.

The cements that can be used in the present invention include boltland cement, fly ash cement, blast furnace cement, blast furnace colloidal cement, colloidal cement, "silica cement," jet cement, and sulfate-resistant cement.

In addition, together with these cements, cement hardening accelerators, hardening retarders, AE agents, dispersants, foaming agents, and the like can be used in combination in the present invention. For example, hardening accelerators include calcium aluminates, calcium sulfoaluminates,
Aluminates, limes, gypsum, amines, ethylene glycols, water glass, calcium chloride, magnesium chloride, metal soap, etc. can be used. Curing retarders include organic carboxylic acids and metal carbonates. AE agent,
For dispersants, commercially available AE agents such as pinzol resin alkali metal salts, alkylnaphthalene sulfonates, allylnaphthalyl sulfonates, lignin sulfonates, alkali lignin salts, and other surfactants may be used with cement. As the foaming agent, aluminum powder, magnesium powder, zinc powder, aluminum nitride powder, silicon alloy powder, etc. can be used.
Those treated with an organic acid such as stearic acid can also be used. These foam in the presence of water and cement. Cement is cured by a hydration reaction (exothermic reaction) with water in the curable composition, and thus contributes to dehydration of the curable composition, improvement of strength, and promotion of the reaction between the epoxy resin and the curing agent.

In particular, the use of ultra-early strength cement such as jet cement, or the combined use of hardening accelerators such as calcium aluminate and calcium sulfoaluminate, can significantly accelerate the hardening of cement. In particular, calcium sulfonate-based hardening accelerators, such as Denka HS-1 and HS-2 (Electrochemical, trade name), act not only as quickening agents, but also in the production of large amounts of water. Since it is fixed as bound water and free water is eliminated, the cured product shrinks less and improves physical properties such as short-term strength and freezing resistance.

Aggregates and fillers that can be used in the present invention are commonly used natural and artificial aggregates and fillers. Although coarse aggregate may be used in special cases, fine aggregate is usually used to facilitate grouting. For example, river sand, sea sand, mountain sand, cinnabar sand, foundry sand, crushed glass sand, crushed ceramic sand, crushed water sand, magnetic steel sand, crushed iron ore sand, iron sand, shirasu,
These include whitebait balloons, masashi, and sand made from sintered ash.
Special materials include plastic particles, foamed plastic particles, hollow particles whose surfaces are coated with cement, and glass beads, which can also be used. In addition to the commonly used stone powder, fillers include special fillers such as cork grains, powdered rubber, wood flour, sawdust, inorganic fibers, natural organic fibers, synthetic fibers, carbon fibers,
Examples include metal fibers, pigments, and ultrafine citric anhydride powder, which can also be used.

Although water is often used in the curable mixture of the present invention to adjust mixability and workability, fresh water is generally used. Although the curable mixtures of the present invention can be freely blended over a fairly wide range of proportions of each component, there are preferred ranges.

Generally, the weight ratio of the amount of bonito blue emulsion (in terms of anhydride) to the amount of liquid or emulsified epoxy resin and curing agent (in terms of anhydride) is 98:2, 40: 6
A range of 0 is good. If the ratio of 98:2 to epoxy resin and curing agent is insufficient, the excellent properties of the epoxy resin, such as adhesiveness, strength, weather resistance, and chemical resistance, will not be utilized.

On the other hand, if the ratio of epoxy resin and curing agent is greater than 40:6, the properties of the Hibiscus blue emulsion, such as adhesiveness, elasticity, flexibility, elongation, and waterproofing, will not be fully utilized. In addition, the amount of cement is the total amount of blue emulsion, liquid or emulsified epoxy resin, hardener, and cement (converted to anhydrous).
A weight percent of 2 to 6 is preferred. If it is less than 2% by weight, the strength of cement, dehydration effect, acceleration of hardening of epoxy resin, etc. will not be utilized.

On the other hand, if the amount is 6% by weight, the stiffness of the cement becomes extremely high, which is generally not preferred. However, the case where the strength of cement concrete is to be further improved is different. When emphasis is placed on the elasticity and flexibility of the curable mixture, the amount used is approximately 3% by weight or less. The amount of aggregate and filler in the curable mixture of the invention can be selected within a wide range.

Their use helps improve strength, prevent shrinkage during curing, and relieve stress when subjected to loads, impacts, temperature changes, etc. The use of fibers in aggregate and filler contributes to improving the bending strength and durability of the cured product. The use of blowing agents is effective in preventing cure shrinkage of the curable mixtures of the present invention. The curable mixture in the present invention can be used by adding water as necessary.

Addition of water reduces viscosity and improves workability. Further, the amount of water is related to the curing speed, strength development, physical properties, etc. of the curable mixture. In general, the less water there is, the longer the curing process will be, and the physical properties after curing will be better, so use as little water as workability allows. As a method for reducing the amount of water added, the amount of water can be reduced by adding a small amount of surfactant, AE agent, dispersant, etc. to water in advance and using that water. The curable mixture in the present invention is obtained by uniformly mixing the components constituting the mixture.

Mixing may be carried out by hand, but it is preferable to uniformly mix mechanically. A commonly known mixer is used as the mixer.The mixing order of each component of the curable mixture in the present invention can be relatively freely changed. Care must be taken when mixing.Generally, mixing is carried out at room temperature, but when mixing at temperatures as low as freezing water, it is necessary to flood the mixture by an appropriate method.The curable mixture thus prepared The curable mixture has good workability, produces good grout, and produces a cured product with excellent physical properties.The curable mixture of the present invention has very excellent characteristics and effects.

That is, '1} It is easy to work at room temperature. Safe and non-flammable. ■ Very good adhesion,
In addition, fillers such as aggregates and fillers in the mixture are also firmly bonded. {31 Characteristics of curable mixtures such as thermoplastic or elastomer-modified thermoplastics, such as adhesion, elasticity, curling properties, waterproofness, etc., properties of epoxy resin and curing agent, strength, chemical resistance, film resistance, The properties, strength, and rigidity of cement are combined to give it strength, maneuverability, elasticity, abrasion resistance, waterproofness, freeze resistance, chemical resistance, and weather resistance. For example, compared to conventional CA mortar, absorbency and water permeability are significantly reduced, and wear resistance, maneuverability, freeze-thaw resistance,
Chemical resistance and weather resistance are significantly improved. '4' Excellent maneuverability and great strength development.

In CA mortar, when the strength development was increased, the grading properties deteriorated, but even if the amount of cement was reduced, the strength was developed through the reaction between the epoxy resin and the hardening agent, so the rolling properties and elastic modulus could be significantly improved. Also, the strength develops quickly. Since cement is mixed, the curing reaction between the epoxy resin and the curing agent is accelerated. It also accelerates the hardening reaction of cement.
Curing will be faster. {5' curable mixture has good workability,
Depending on the application, it can be manufactured from fluid materials that can be transported by pump or leveled with a rake, to hard materials that can be rolled and compacted immediately after being laid. will surely form a solidified material with excellent physical properties without deteriorating its performance.

Depending on the composition, the solidified material of the curable mixture can range from a soft or hard rubber-like elastic material to a hard, strong and impact-resistant material, or a material with excellent heat insulation properties such as a heat insulating material.
Or conversely, it is possible to make various things such as those with good heat conductivity. The curable mixture of the present invention is composed as described above and has excellent characteristics and effects, so
Very suitable for grouting of railway slab tracks.

It is also suitable for filling ballast voids in railway ballast trackbeds. The curable mixture of the present invention has a hardened product that is strong, waterproof, and has excellent shaving properties, so it can be effectively applied to grout materials for various uses. It also seems possible to develop a wide range of applications. Next, examples of the present invention will be shown.

Example 1 Water was added to and mixed with a nonionic asphalt emulsion (evaporation residue: 6% by weight, penetration of evaporation residue: 116) according to the formulation shown in Table 2, and a water-dispersed eboxy resin, Epicoat D, was added to the mixture.
Add x255 (Shell Chemical, trade name, liquid anhydride) and mix well.

Add sand and aluminum powder to this and mix for about 1 minute. Add regular Boltland cement and mix for about 1 minute, then add curing agent Epicure 3255 (Shell Chemical, trade name, liquid anhydride) and mix well for about 2 minutes. A curable mixture according to the invention could be obtained. The steel strength of this material was measured by the flow time using a J funnel according to the Prepact Concrete Guideline proposed by the Japan Society of Civil Engineers, poured into a formwork for cement mortar (4 x 4 x 16), solidified, cured at room temperature (2500℃), and compressed. The strength was measured. The results are shown in Table-1. For comparison, an experiment was carried out using the formulation of the comparative example shown in Table 2 (the formulation excluding the epoxy resin and curing agent) in the same manner as in the example, and the results are shown in Table 1. It can be seen that the strength of the Examples is faster than that of the Comparative Examples, the strength is greater, and the compressive strain shows that the strength is greater. It should be noted that the volumetric shrinkage of the Examples during curing is smaller than that of the Comparative Examples, and when the cured products are compared, the cured products of the Examples have lower water absorption, water permeability, and better freeze-thaw properties than the Comparative Examples. Ta.

Table-1 * This is the amount of deformation strain of the specimen up to the maximum compressive strength in the compression test of the specimen on the 28th day of age.

The larger this value is, the better the blinding property is. table·
2 Example 2 No. 2 shown in Table-3. 1.No. 2 and no. 3, nonionic asphalt emulsion (evaporation residue 59.5% by weight, penetration of evaporation residue 91), early strength Bortland cement, aluminum powder, fine sand oil sand, FMI. 45) "The curable mixture of the present invention was obtained by kneading tap water, the water-dispersed epoxy resin Epicoat Dx255, and the polyamide curing agent Epicure 3255 in a mortar mixer (rotation speed 80 to 100 R/M). .

After 15 minutes of mixing, their fluidity was measured, and then poured into a cylindrical polyethylene bag with a diameter of 5 mm as specified by the Japan Society of Civil Engineers, and cured at room temperature of 25 qo.The compressive strength after 2 hours and 28 days was measured according to JISR2501. Measured according to. The expedient time of these curable mixtures was about 2 hours at room temperature 250℃. Therefore, the order in which the materials are added is free, but in order to allow extra time for convenience, it is best to add the epoxy resin or curing agent towards the end. For comparison, No. 3 in Table 3 is used. For formulation 4 (not including epoxy resin and curing agent), make a mixture using the same procedure as in the example...*
Tested. Example No. 1.No. 2.No. 3 and Comparative Example No. The test results of No. 4 are shown in Table 4. In addition, the cured products of these Examples and Comparative Examples were subjected to freeze-thaw tests,
A weather resistance test was conducted. The results are also shown in Table-4. Table-3
Composition (parts by weight) Table 4 Test results * Sample materials aged 28 days were destroyed in water, frozen at -18°C for 5 hours per cycle, and then thawed at 15°C.

After 40 consecutive cycles, the compressive strength is measured. This shows how much the strength has increased as a percentage compared to the compressive strength of a normal 28-day old specimen. * * As can be seen from the freeze-thaw test results in Table 4 using Weatherometer K. In the Examples, there is almost no decrease in strength due to freezing and thawing, but in the Comparative Examples, there is a slight decrease in strength, indicating that the cured product of the curable mixture of the present invention has excellent freeze damage resistance. o Example 3 No. shown in Table-5. According to the formulations 1 to 5, the same materials as in Example 2 were mixed in a mortar mixer in the same manner as in Example 2 to obtain a curable mixture according to the present invention.

The available flight time is approximately 2 hours in each case. Table 6 shows the results of various tests conducted in the same manner as in Example 2. In addition, as a comparative example, No. 1 shown in Table 5 was used. According to the formulation No. 6, it was made into a slurry and tested in the same manner as in the example. The results are shown in Table 6.

Table-5 Toriko △ (parts by weight) Table-6 Test results* This is the amount of deformation strain of the donor body up to the maximum compressive strength in the compression test of the 28-day-old specimen.

The higher this value, the more contemptuous it is. As can be seen from the test results, the curable mixtures of the present invention in Examples have a high degree of sloughing property and are resistant to frost damage. Example 4 No. 4 shown in Table-7. 1 and no. According to the formulation of 2, cationic asphalt emulsion (6% by weight of evaporation residue, penetration of evaporation residue 74), jet cement (manufactured by Onoda Cement, trade name), early strength boltland cement (manufactured by Onoda Cement, trade name) ), aluminum powder, pongee sand (river sand, FM
I. 45), tap water and epoxy resin emulsion Epodite EB-100 (Showa Kobunshi Co., Ltd., trade name), water-dispersible polyamide curing agent Epodite K-400 (Showa Kobunshi Co., Ltd., trade name) and polypropylene staple fiber P Chop (Chisso Co., Ltd.) (trade name, length: 1 mm) was mixed in a mortar mixer to obtain a curable mixture of the present invention.

After kneading for 1 minute, the fluidity was measured using a flow table using the flow test method for cement mortar, poured into a polyethylene bag specified by the Japan Society of Civil Engineers, and cured at room temperature 2500°C. After 3 hours, 1 day, and 28 days, the compressive strength was measured. It was measured. At the same time, a 4 x 4 x 16 fox specimen was prepared and cured for 28 hours.
A bending test was conducted after 1 day. These results are shown in Table-7. Table-7 Mixture and Results Example 5 Straight asphalt was heated to about 14,000 ℃, natural rubber latex was added to it, mixed, and the water was evaporated to make rubber-containing asphalt (penetration: 85
800 parts by weight of a nonionic asphalt emulsion (evaporation residue 65%) and a nonionic emulsion (water content 3% by weight) of epoxy resin Epicoat 828 (Shell Chemical, trade name) were emulsified. , 10 parts by weight of polyamide hardener Emulsion-5 Group (Dainippon Shikizai, trade name), 30 parts by weight of early strength Bortland cement, 10 parts by weight of pongee sand, 15 parts by weight of tap water. A curable mixture of the present invention could be obtained by kneading the mixture in a mortar mixer.

Example 6 Cationic asphalt emulsion for cement mixing (
Evaporation residue 75% by weight, penetration of evaporation residue 126)6
00 parts by weight and 10 parts by weight of Neoprene Latex 950 (manufactured by Showa Neoprene, trade name, moisture 50% by weight) were mixed with 50 parts by weight of ordinary Boltland cement.
0.075 parts by weight of aluminum powder, 50 parts by weight of pongee sand, 20 parts by weight of water, 15 parts by weight of Epikote Dx255 and 15 parts by weight of Epicure 8255 were mixed in a mortar mixer. It was possible to obtain an inventive curable mixture.

Example 7 /Nion asphalt emulsion (evaporation residue: 7% by weight, penetration of evaporation residue: 156%) 60 parts by weight of polyacrylic ester emulsion Evanal 810W (manufactured by Kyowa Tori Sosai, trade name, water content) 51 parts by weight) mixed with 100 parts by weight, 50 parts by weight of early strength Bortland cement, 0.075 parts by weight of aluminum powder, 500 parts by weight of river sand, and 200 parts by weight of water.
A curable mixture of the present invention could be obtained by kneading 150 parts by weight of Epicoat Dx255 and 15 parts by weight of Epicure 3255 in a mortar mixer.

Claims (1)

[Claims] 1 Blending a bitumen emulsion, a liquid or emulsified epoxy resin, and a hardening agent within a weight ratio of 98:2 to 40:60 on a moisture-free basis, and adding cement to a bitumen emulsion, liquid or emulsified epoxy resin, and a hardening agent. Water is added or not added to the total amount of epoxy resin, curing agent and cement in an amount of 2 to 60% by weight (moisture-free) and, if necessary, aggregate, filler and/or blowing agent. A curable mixture for orbital use.