KR100359428B1 - Rubber modified asphalt type of water-proofing compositions - Google Patents

Abstract

An object of the present invention is to form a stable and robust waterproof layer by instantaneous solidification that can be used as a spray waterproofing method of room temperature type and can be adapted to the construction, engineering, waterproofing, moisturizing, rustproofing and filling of engineering structures and buildings. A rubber modified asphalt-based waterproof composition is provided. This rubber-modified asphalt-based waterproofing composition is composed of a cationic rubber-modified asphalt emulsion and an organic coagulant.

Description

Rubber-modified asphalt-based waterproof composition {RUBBER MODIFIED ASPHALT TYPE OF WATER-PROOFING COMPOSITIONS}

The present invention relates to a rubber-modified asphalt-based waterproof composition, and more particularly, to a rubber-modified asphalt system used for the purpose of waterproofing, moisture proofing and rustproofing, filling, and other purposes for engineering structures or buildings. It relates to a waterproof composition. In particular, the present invention relates to a rubber-modified asphalt-based waterproof composition capable of instantaneous solidification by spray waterproofing at a normal temperature to form a stable and robust waterproof layer.

Until recently, hotmelt asphalt waterproofing was frequently used for the purpose of waterproofing engineering structures or buildings. However, these methods include various problems such as odors and smoke, flammability, and danger of burns because the asphalt is heated and melted in the field.

In recent years, it has been replaced by a room temperature waterproof method using a rubber modified asphalt emulsion instead of these methods. One typical method is to spray a mixture of a rubber modified asphalt emulsion and a gelling agent onto a coating surface to form a rubber modified asphalt layer on the surface, and another method is to spray a rubber modified asphalt emulsion and a coagulant through separate nozzles. By spraying the coated surface while contacting and mixing with each other in the air, a rubber-modified asphalt layer is formed on this surface.

For example, in accordance with JP-B 56-48652 and 58-41107, JP-B 56-48652 includes asphalt or mixtures of asphalt or mixtures of oil and latex and at least one of asphalt, oil and latex. The aqueous emulsion and the mixed emulsion of the gelling agent are continuously mixed together and sprayed onto the coated surface to form a rubber-modified asphalt layer on the surface, and in JP-B 56-41107, the total solid content is 70 wt.% Or more (typically 80 ~ 85 wt.%) Phosphorus anionic rubber modified asphalt emulsion and gelling agent of polyvalent metal salt (in the form of 1-15 wt.% Aqueous solution) by spraying through a separate airless sprayer in the air A rubber modified asphalt layer is formed by spraying onto the coated surface while contacting and mixing with each other.

Another room temperature waterproofing method currently in use is a self-hardening type that solidifies a modified asphalt emulsion using a hydraulic inorganic material such as cement. This method includes water contained in a hydraulic inorganic material and a rubber modified asphalt emulsion. It is a method of forming a rubber-modified asphalt layer by removing water as crystal water by using a hydration reaction with. For example, hydraulic inorganic materials known to solidify rubber-modified asphalt are portland cement, which may be used alone or in combination with alumina cement or the like.

However, the room temperature waterproofing method disclosed in JP-B 56-48652 is not practical because the sagging phenomenon occurs because the solidification time is unreasonably long when applied to an upright or inclined surface. The room temperature waterproofing method disclosed in JP-B 56-41107, that is, the air spray type room temperature waterproofing method of instantaneous solidification by spraying an emulsion simultaneously with a gelling agent, is formed by restricting the leaching amount of water separated upon solidification of the sprayed material. It is advantageous in that there is a significant improvement in the blistering phenomenon of the modified asphalt layer. However, a problem with this method is that the rubber-modified asphalt layer tends to peel off from the surface of the application due to water seeping out of the rubber-modified asphalt emulsion in wet conditions. Another problem is that the use of coagulants is due to the fact that the salts of polyvalent metals are mainly calcium chloride, ie the surface of the reinforced concrete to which this method is applied is susceptible to salt and rust attack.

The room temperature waterproofing method of solidifying rubber-modified asphalt using a hydraulic inorganic material such as cement is difficult in practical use because the rubber-modified asphalt layer formed when applied to a wall or ceiling is too hard to harden sufficiently in a short time.

Therefore, there is a strong demand for the development of a rubber-modified asphalt-based waterproof composition that solves all the problems of the room temperature waterproofing method as described above.

It is an object of the present invention to meet the above requirements by providing a rubber modified asphalt based waterproofing composition which solidifies a cationic rubber modified asphalt emulsion using an organic coagulant that has never been heard. Rubber-modified asphalt emulsion and organic coagulant are sprayed onto sprayed surface by spraying on sprayer and contacting and mixing with each other in the air, so rubber-modified asphalt emulsion instantly solidifies and improves adhesion even on wet surface and has little amount of leachate. A layer can be formed. Moreover, the composition of the present invention does not have a problem of salt attack and rust generation even when applied to the surface of reinforced concrete.

In particular, the present invention provides a rubber modified asphalt-based waterproof composition containing a cationic rubber modified asphalt emulsion and an organic coagulant.

The rubber-modified asphalt-based waterproof composition of the present invention sprays a cationic rubber-modified asphalt emulsion and an organic coagulant through an air- or air-type sprayer and sprays the cationic rubber-modified asphalt emulsion instantaneously by contacting and mixing them with each other in the air. By dissolving and solidifying to form a waterproof layer of rubber-modified asphalt on the coated surface, it has sufficient adhesion to wet surfaces, and can be installed on the ceiling or wall without any problem, and a waterproof layer having a required thickness can be formed.

Hereinafter, the present invention will be described in detail.

The term " cationic rubber modified asphalt emulsion " used in the rubber modified asphalt-based waterproofing composition of the present invention refers to rubber particles and asphalt or rubber modified asphalt (i.e., kneading asphalt and rubber, and optionally, by adding a polymer or the like) It is to be understood that the modified asphalt) particle is a positive ion oil-in-water type emulsion obtained by dispersing an aqueous phase with an evaporation residue of 50 to 70 wt.%. . If the emulsion has an evaporation residue of less than 50 wt.%, Not only the storage stability is poor, but also the instantaneous coagulation performance becomes poor, so that the amount of coagulant is increased and the amount of leachate is increased. If the evaporation residue is 70 wt.% Or more, the emulsion becomes much more difficult to blend and mix with cement, resulting in poor workability. The ratio of rubber to asphalt in the solids content of the cationic rubber modified asphalt emulsion is in the range of 20 to 50 parts by weight per 100 parts by weight of asphalt. When the rubber content is less than 20 parts by weight, a stable and strong waterproof layer cannot be obtained, whereas when the rubber content is more than 50 parts by weight, it is not only economical but also deteriorates weather resistance and other properties.

As asphalt used in the present invention, natural oils such as straight asphalt, semi-blown asphalt, propane-deasphalted asphalt, petroleum asphalt such as blown asphalt and lake asphalt, etc. There is asphalt, and these may be used alone or in combination of two or more. The asphalt used may contain small amounts of oils such as process oils, lubricating oils, anthracene oils, pine oils, creosote oils, and aging stabilizers.

Examples of the rubber used in the present invention include natural rubber, gutta-percha, cyclized rubber, styrene-butadiene rubber, styrene-isoprene rubber, polyisoprene rubber, butadiene rubber, chloroprene rubber, butyl rubber, halogenated butyl rubber, and chlorination. Polyethylene, chlorosulfonated polyethylene, ethylene-propylene rubber, EPT rubber, alpine rubber, styrene-butadiene block polymer rubber, styrene-isoprene block polymer rubber, and the like.

Polymers used in the present invention include ethylene-vinyl acetate copolymers, ethylene-acrylate copolymers, polyethylene, vinyl acetate-acrylate copolymers, and the like.

The materials such as rubber and polymer may be in various forms such as powder, latex, emulsion, aqueous liquid and the like. The rubber may be used alone or in combination of two or more, or may be used in combination with the above polymers as necessary.

For example, the cationic rubber modified asphalt emulsion may be prepared by the following method.

That is, the cationic rubber latex is added to and mixed with the cationic asphalt emulsion so that the ratio of rubber to asphalt is within the above range. Cationic asphalt emulsion is mixed by heating the melted asphalt and the emulsion prepared by dissolving positive ion surfactant, stabilizer, etc. in hot water (approximately 50 ℃) through an emulsifier such as colloid mill or barrel homogenizer It is prepared by emulsification with water.

Cationic rubber modified asphalt emulsions are prepared by kneading hot melted asphalt with rubber and optionally polymers to produce rubber modified asphalt and then emulsify in the same manner as above.

Cationic surfactants used to prepare cationic rubber modified asphalt emulsions include aliphatic or cycloaliphatic mono-, di- or tri-amines with long chain alkyl groups, amidoarines, polyaminoethylimidazolines, long chain hydroxyalkyls. Diamines and rosin amines, ethylene oxide addition products of these amines, amine oxides and the like. A water-soluble or water dispersible salt prepared by reacting hydrochloric acid, sulfamic acid or acetic acid with these amine surfactants may be used, or quaternary ammonium salts of these amine surfactants may be used. You may use these surfactant together with nonionic surfactant, such as a polyoxyethylene alkyl ether, a polyoxyethylene alkyl allyl ether, and a hydroxyethylene-hydroxypropylene block copolymer.

Stabilizers to be used include gelatin, PVA, sodium alginate, starch, carboxymethyl cellulose and the like.

Examples of the organic coagulant used in the present invention include an aqueous solution containing an alkyl sulfonate polymer resin, that is, an aqueous solution of an alkyl sulfonate polymer resin prepared by polymerization of an alkyl sulfonate monomer or a copolymerization of an alkyl sulfonate monomer with another monomer. And aqueous solutions of polymer resins, aqueous solutions of alkylbenzene sulfonates or emulsions prepared by emulsification of alkyl sulfonate polymer resins and / or alkylbenzene sulfonates. Sodium polystyrene sulfonate is particularly suitable for polymer resins of alkyl sulfonates and sodium dodecylbenzene sulfonate is best for alkylbenzenes. The content of the active ingredient in these aqueous solutions should be 5 to 50 wt.%. Aqueous solutions having an active ingredient content of 5 wt.% Or less contain much more water, so that formation adversely affects the adhesion and water resistance of the waterproof layer.

Aqueous solutions with an active ingredient content of at least 50 wt.% Are not only economical, but too viscous, thus adversely affecting spraying. Cement added to and mixed with cationic rubber modified asphalt emulsions is ordinary portland cement, crude portland cement, medium heat cement, white portland cement, blast furnace poroland cement, silica cement, fly ash Cement, alumina cement, expanded cement, sulfate resistant cement, jet cement, cemented carbide cement, blast furnace colloid cement, colloid cement, ultra fine cement, etc. may be used alone or in combination of two or more.

Cement is effective in reducing the amount of water leaching out of the formed waterproofing layer, since cement absorbs water as crystallized water by hydrating with water in cationic rubber-modified asphalt emulsion. When cement is added to the cationic rubber modified asphalt emulsion, it should be 0 to 100 parts by weight per 100 parts by weight of the cationic rubber modified asphalt emulsion. In some cases, the cationic rubber modified asphalt emulsion may not contain any cement at all. Liquid mixtures of 100 parts by weight of cationic rubber-modified asphalt emulsion and 100 parts by weight or more of cement have a short pot life and are difficult to handle.

Fibers used in the present invention include synthetic fibers such as glass fibers, rayon silk, vinylon, saran, polypropylene, polyester, polyamide and polyimide, carbon fibers, and the like, and steel fibers may be used if necessary.

The rubber-modified asphalt-based waterproofing composition according to the present invention is obtained as follows.

(1) A cationic rubber-modified asphalt emulsion and an organic coagulant are sprayed on the surface of the coating while being sprayed at the same time through a sprayer and in contact with and mixed with each other in the air to form a waterproof layer on this surface.

(2) The liquid mixture and the organic coagulant prepared by adding cement to the cationic rubber-modified asphalt emulsion are sprayed through the sprayer at substantially the same time and sprayed onto the coated surface while contacting and mixing with each other in the air to form a waterproof layer on the surface.

(3) Cationic rubber-modified asphalt emulsion, fibers and organic coagulants are sprayed through the sprayer at substantially the same time and sprayed onto the coated surface while contacting and mixing with each other in the air to form a waterproof layer on this surface.

(4) Spraying the liquid mixture prepared by adding and mixing cement to the cationic rubber-modified asphalt emulsion, and the fiber and organic coagulant through the sprayer at the same time and spraying the coated surface while contacting and mixing with each other in the air to provide a waterproof layer on the surface. To form.

The nebulizer used in the present invention is an air spray type or an airless spray type. Generally, a spray gun equipped with two or three nozzles (or heads) is used to form a cationic rubber modified asphalt emulsion, or a liquid mixture with cement and coagulant, through these nozzles (or heads). Spray almost simultaneously. In the case of a two nozzle system, a cationic rubber modified asphalt emulsion, or its liquid mixture with cement, is sprayed from one nozzle while a coagulant is sprayed from the other nozzle. In the case of a three nozzle system, a cationic rubber modified asphalt emulsion, or its liquid mixture with cement, is sprayed in one nozzle while coagulants are sprayed in the other two nozzles. At the same time as spraying with a coagulant or the like, the fibers may be sprayed with a separate sprayer. For example, in a direct spray method, which is one example of GRC production, a chopper gun may be used to cut fibers (roving) to a constant length and simultaneously spray them. The fibers can of course also be added to the cationic rubber modified asphalt emulsion, mixed and then sprayed.

Listed below are representative proportions of the materials used in preparing the rubber modified asphalt based waterproofing compositions of the present invention.

(1) The amount of the active ingredient in the coagulant is 0.4 to 10 parts by weight per 100 parts by weight of the cationic rubber modified asphalt emulsion. When the content of the active ingredient in the coagulant is less than 0.4 part by weight, the composition has poor instantaneous coagulation performance, and when it exceeds 10 parts by weight, the formed waterproof layer is poor in water resistance.

(2) The amount of the active ingredient in the coagulant is 0.1 to 10 parts by weight per 100 parts by weight of the liquid mixture prepared by mixing 0 to 100 parts by weight of cement and 100 parts by weight of the cationic rubber-modified asphalt emulsion. If the content of the active ingredient in the coagulant is less than 0.1 part by weight, the instantaneous coagulation ability of the composition is poor, and if it exceeds 10 parts by weight, the formed waterproof layer is poor in water resistance.

(3) The amount of fibers per 100 parts by weight of the cationic rubber-modified asphalt emulsion is 0.1 to 5 parts by volume, and the amount of the active ingredient in the coagulant is 0.4 to 10 parts by weight. If the amount of the fiber is less than 0.1 volume part, sufficient weather resistance and durability cannot be imparted to the formed waterproof layer, and if it exceeds 5 volume parts, it becomes difficult to form the waterproof layer itself. If the amount of the active ingredient in the coagulant is less than 0.4 part by weight, the composition may have poor instantaneous coagulation ability and may increase the amount of leachate having 10 parts by weight or more.

(4) 0 to 100 parts by weight of cement and 100 parts by weight of cationic rubber-modified asphalt emulsion were added and mixed, and the amount of fibers per 100 parts by weight of the liquid mixture was 0.1 to 5 parts by volume, and the amount of the active ingredient in the coagulant was 0.1 to 10. Parts by weight. If the amount of fibers is less than 0.1 volume part, sufficient weather resistance and durability cannot be provided to the formed waterproof layer, and if it exceeds 5 volume parts, it becomes difficult to form the waterproof layer itself. If the amount of the active ingredient in the coagulant is less than 0.1 part by weight, the composition has poor instantaneous coagulation ability, and if it is 10 parts by weight or more, the amount of leachate may increase.

Features of the present invention will be described in detail according to experimental examples and examples.

Material used

1) Cationic Rubber Modified Asphalt Emulsion (manufactured by Nichireki Chemical Industry)

Rubber asphalt is prepared by adding 20 parts by weight of styrene-butadiene rubber and 10 parts by weight of styrene-isoprene block copolymer rubber to 70 parts by weight of hot melt molten straight asphalt (penetration degree: 150 to 200), and then preparing the rubber asphalt using a cationic surfactant. Emulsification gave a cationic rubber modified asphalt emulsion (70 wt.% Evaporation residue). The "cationic rubber modified asphalt emulsion:" is hereinafter simply referred to as "rubber modified asphalt emulsion".

2) Alkyl sulfonate polymer resin (manufactured by Toho Natural Gas)

25 wt.% Aqueous solution of an alkylsulfonate polymer resin prepared by polymerizing sodium styrene sulfonate with a water-soluble polymerization initiator (hereinafter simply referred to as "coagulant A").

3) Alkylbenzene sulfonate (manufactured by Kao Soap)

A 65 wt.% Aqueous solution of sodium dodecylbenzene sulfonate or Neopelex F-65 (manufactured by kao Soap) was used to prepare an aqueous solution containing 10 wt.% Of sodium dodecylbenzene sulfonate (hereinafter simply referred to as "coagulant B"). ).

4) Cement: Commercially available Portland cement

5) Fiber (vinyllon fiber): Kuratech (manufactured by Kuraray)

Experimental Example 1

The pot life of the cement was tested to determine the amount of cement added to the rubber modified asphalt emulsion. Specifically, the viscosity of a certain amount of rubber modified asphalt emulsion and a liquid mixture of different amounts of cement was measured by a Brookfield Rotational viscometer. Stir at 500 rpm viscosity using a stirrer with turbine blades (RD20DZM, IKA-WERK). The viscosity of the mixture was measured after the pot life of 2 hours had elapsed. It was assumed that a mixture having a viscosity of 10,000 cps or less could be used. Mixing continued for 2 hours and measured at room temperature (25 ° C.). The experimental results are shown in Table 1.

Table 1 Amount and Viscosity of Cement

*: Gelation **: Not measurable

Experimental Example 2

The following experiments were carried out to investigate the changes in the instantaneous coagulation capacity of several compositions with varying amounts of coagulant added to the rubber modified asphalt emulsion. That is, a certain amount of rubber-modified asphalt emulsion or a liquid mixture of rubber-modified asphalt emulsion and cement was mixed with different amounts of coagulants, respectively, to observe the time required for gelation to occur. Specifically, mixing was carried out using the same agitator as in Experimental Example 1. Under these conditions, the rubber-modified asphalt emulsion and cement were mixed for about 1 minute, and the elapsed time after which gelation occurred after adding a coagulant was visually measured. In this experiment, while maintaining the amount of cement to 100 parts by weight, which is the upper limit in Experimental Example 1, the experiment was carried out with a constant ratio of rubber modified asphalt emulsion: cement. That is, the quantitative ratio of rubber modified asphalt emulsion: cement was 50 parts by weight: 50 parts by weight. The time was measured at room temperature. The experimental results are shown in Tables 2, 3, 4 and 5.

Table 2 Amount and Instantaneous Coagulation Capacity of Coagulants

(One)

*: Gelation time is 5 minutes or more.

Table 3 Amount and Instantaneous Coagulation Capacity of Coagulants (2)

*: Gelation time is 5 minutes or more.

Table 4 Amount and Instantaneous Coagulation Capacity of Coagulants

(3)

*: Gelation time is 5 minutes or more.

Table 5 Amount and Instantaneous Coagulation Capacity of Coagulants

(4)

*: Gelation time is 5 minutes or more.

From the results of Experimental Examples 1 and 2, the followings can be seen.

1) When more than 100 parts by weight of cement is added to the rubber-modified asphalt emulsion, the pot life of the composition is less than 2 hours, which slightly affects smooth spraying.

2) If the coagulant A is added to less than 6 parts by weight and added to 100 parts by weight of the rubber-modified asphalt emulsion, the gelation time (seconds) of the composition becomes long and instantaneous solidification becomes impossible. On the other hand, when the coagulant A is 30 parts by weight, the gelation time (seconds) of the composition is shortened, which significantly affects the instantaneous solidification of the composition. However, the effect is not changed at 30 parts by weight or more. In addition, more than 40 parts by weight of water leaked out of the waterproof layer.

3) If the coagulant A is added to less than 2 parts by weight and added to 100 parts by weight of the liquid mixture of the rubber-modified asphalt emulsion and the cement, the gelation time (seconds) of the composition becomes long, and thus instantaneous solidification becomes impossible. When the coagulant A is 2 parts by weight, the gelation time (seconds) of the composition is shortened, which significantly affects the instantaneous solidification of the composition. In addition, more than 40 parts by weight of water leaked out of the waterproof layer.

4) If the coagulant B is added to less than 4 parts by weight and added to 100 parts by weight of the rubber-modified asphalt emulsion, the gelation time (seconds) of the composition becomes long, and thus instantaneous solidification becomes impossible. On the other hand, when the coagulant B is 8 parts by weight, the gelation time (seconds) of the composition is shortened, which significantly affects the instantaneous solidification of the composition.

5) When coagulant B is added to less than 1 part by weight and added to 100 parts by weight of the liquid modified mixture of the rubber-modified asphalt emulsion and the cement, the gelation time (seconds) of the composition becomes long, and thus instantaneous solidification becomes impossible. On the other hand, when the coagulant B is 1 part by weight, the gelation time (seconds) of the composition is shortened, which significantly affects the instantaneous solidification of the composition.

Example 1

In consideration of the results of Experimental Examples 1 and 2, the eight compositions shown in Table 6 were sprayed onto the dry and wet surfaces of the slate plate wall in the upright state with a spray gun. The rubber modified asphalt emulsion was used in an amount of about 6.3 kg / m ² or in an amount such that the thickness of the formed waterproof layer was about 5 mm. In this example, the vinylon roving, a fiber, was cut to about 30 mm with a chopper gun and sprayed onto the wall almost simultaneously with the rubber modified asphalt emulsion and coagulant.

Therefore, it was confirmed that all the compositions were able to adhere well to both surface portions without sagging at all even when sprayed on dry and wet surfaces of the wall of the upright since extremely instantaneous solidification ability. And even when cement was contained in this composition, water did not substantially leak out from the waterproof layer at all. Even after about six months after exposure, the same conditions as in the immediate spraying were maintained without foaming or sagging.

For comparison, the spray experiment was conducted according to the method of Example 1 using 100 parts by weight of a rubber-modified asphalt emulsion and 60 parts by weight of jet cement (manufactured by Onoda Cement) without using a coagulant. It was extremely impossible to spray such a composition onto an upright wall because of the flow.

In another comparative experiment, 100 parts by weight of anionic rubber modified asphalt emulsion (70 wt.% Evaporation residue, 30 wt.% Rubber content) and a coagulant, i.e., a 7 wt.% Aqueous solution of calcium chloride, were used as in Example 1. As a result, the composition was able to solidify instantaneously without sagging, but a large amount of water leaked out of the waterproof layer. Furthermore, about six months after exposure, foaming occurred in the waterproofing layer and partially peeled off. As a result, attempts to prevent leaching of water by incorporating cement into the composition have failed.

The physical properties of the eight rubber-modified asphalt-based waterproof compositions were investigated in accordance with the standard for rubber-modified asphalt of JIS 6021. The results are shown in Table 6 for comparison with the reference value according to JIS 6021. As can be seen from Table 6, all of the rubber-modified asphalt-based waterproofing compositions exhibited good physical properties in accordance with the standards according to JIS 6021.

Table 6 Usage and Physical Property Measurement Results

*: Reference value according to JIS A 6021 **: Adhesive strength by test method

The above configuration of the present invention has the following advantages.

1) When the rubber-modified asphalt-based waterproofing composition of the present invention containing a rubber-modified asphalt emulsion and an organic coagulant is sprayed onto the coated surface with an air-free or air-type atomizer, the emulsion and the coagulant are contacted and mixed with each other in the air so that the emulsion is instantly decomposed. It solidifies and forms a waterproof layer on the coated surface. Thus, the waterproof layer adheres well to upright surfaces (such as walls), ceilings, or wet surfaces without sagging or dripping.

2) Since the rubber-modified asphalt-based waterproofing composition of the present invention can be instantaneously solidified, it is possible to quickly form a rubber-modified asphalt-based waterproofing layer free of thickness control.

3) If the rubber-modified asphalt-based waterproof composition of the present invention further contains cement, the cement absorbs moisture in the rubber-modified asphalt emulsion in the form of crystal water, so that water does not substantially leak out, thereby providing a waterproof layer having almost no foaming phenomenon. It can be realized.

4) The addition of fibers to the rubber modified asphalt-based waterproofing composition of the present invention can realize a waterproofing layer with much improved weather resistance, water resistance and durability.

5) Since the rubber-modified asphalt-based waterproof composition of the present invention has excellent physical properties such as tensile strength, elongation rate, and adhesive strength, the rubber-modified asphalt-based waterproof composition easily adheres to a complex coating surface to form a waterproof layer that adheres well to the coating surface.

6) Since the rubber modified asphalt-based waterproof composition of the present invention contains an organic coagulant, there is no problem of salt attack or rust generation on the reinforced concrete surface sprayed with the composition.

7) Spray Even if exposed to rainwater immediately, the rubber-modified asphalt-based waterproof composition of the present invention does not flow out so that it can be reliably sprayed on the coated surface in a short time.

Rubber modified asphalt-based waterproof composition according to the present invention has the advantages as described above to waterproof all parts of buildings such as roofs, basement walls, floors, water tanks, subway, public waterways, underpasses, irrigation canals, low It can also be used for waterproofing water plants, water supply and drainage systems, banks, dams and bridges.

Claims (8)

Cationic rubber modified asphalt emulsion having 50 to 70 wt.% Evaporation residue and 20 to 50 wt.% Rubber relative to 100 wt.% Asphalt in solids, and alkylsulfonate polymer resin As an organic coagulant selected from an aqueous solution containing, an aqueous solution of an alkylbenzene sulfonate, an alkyl sulfonate polymerized resin and / or an emulsion obtained by emulsifying an alkylbenzene sulfonate, an organic coagulant having an active ingredient of 5 to 50 wt.% Is cationic. A rubber-modified asphalt-based waterproof composition comprising an organic coagulant in an amount of 0.4 to 10 parts by weight based on 100 parts by weight of a rubber-modified asphalt emulsion. Cationic rubber modified asphalt emulsion having 50 to 70 wt.% Evaporation residue and 20 to 50 wt.% Rubber relative to 100 wt.% Asphalt in solids, and alkylsulfonate polymer resin An organic coagulant selected from an aqueous solution containing, an aqueous solution of an alkylbenzene sulfonate, an alkyl sulfonate polymerized resin and / or an emulsion obtained by emulsifying an alkylbenzene sulfonate, and an organic coagulant having an active ingredient of 5 to 50 wt.% And a cement. A rubber-modified asphalt-based waterproofing composition comprising 0.1 to 10 parts by weight of an organic coagulant as an active ingredient amount and 0 to 100 parts by weight of cement, based on 100 parts by weight of the bistable rubber-modified asphalt emulsion. Cationic rubber modified asphalt emulsion having 50 to 70 wt.% Evaporation residue and 20 to 50 wt.% Rubber relative to 100 wt.% Asphalt in solids, and alkylsulfonate polymer resin An organic coagulant selected from an aqueous solution containing an aqueous solution, an aqueous solution of an alkylbenzene sulfonate, an alkyl sulfonate polymerized resin and / or an emulsion obtained by emulsifying an alkylbenzene sulfonate, and an organic coagulant having an active ingredient of 5 to 50 wt.%, And a fiber A rubber-modified asphalt-based waterproofing composition, wherein the organic-based coagulant is contained in an amount of 0.4 to 10 parts by weight and fibers in an amount of 0.1 to 5 parts by volume based on 100 parts by weight of the cationic rubber-modified asphalt emulsion. Cationic rubber modified asphalt emulsion having 50 to 70 wt.% Evaporation residue and 20 to 50 wt.% Rubber relative to 100 wt.% Asphalt in solids, and alkylsulfonate polymer resin An organic coagulant selected from an aqueous solution containing, an aqueous solution of an alkylbenzene sulfonate, an alkyl sulfonate polymerized resin and / or an emulsion obtained by emulsifying an alkylbenzene sulfonate, and an organic coagulant having an active ingredient of 5 to 50 wt.%, 100 parts by weight of an organic coagulant as an active ingredient amount, 0 to 100 parts by weight of cement, and 100 parts by weight of a mixed liquid of a cationic rubber-modified asphalt emulsion and cement. A rubber-modified asphalt-based waterproofing composition comprising fibers in a proportion of 0.1 to 5 vol. Parts. The rubber-modified asphalt-based waterproofing composition according to any one of claims 1 to 4, wherein the alkylbenzenesulfonate is sodium dodecylbenzenesulfonate. A process comprising the step of contact-mixing a cationic rubber-modified asphalt emulsion, an organic coagulant, and cement and / or fiber as necessary to obtain a rubber-modified asphalt-based waterproof composition according to any one of claims 1 to 5. Method of forming a rubber-modified asphalt-based waterproof composition layer. 7. The method for forming a rubber-modified asphalt-based waterproofing composition layer according to claim 6, wherein the contact mixing is carried out by spraying the respective materials toward the construction surface. The method for forming a rubber-modified asphalt-based waterproof composition layer according to claim 6 or 7, wherein a cationic rubber-modified asphalt emulsion and cement are mixed in advance.