KR102222229B1 - Orgainc-inorganic hybrid asphalt coating agent for repair and reinforcement of asphalt and asphalt coated the same - Google Patents

Abstract

The present invention relates to an organic/inorganic hybrid asphalt concrete coating agent for asphalt repair and reinforcement, a physical property improver for an asphalt concrete coating agent used therein, and a method for repairing and reinforcing a pavement surface of asphalt using the organic/inorganic hybrid asphalt concrete coating agent. The physical property improver for asphalt concrete coating agent of the present invention improves mechanical properties such as tensile strength, tear strength, adhesion strength, and elongation rate of the asphalt concrete coating agent.

Description

Orgainc-inorganic hybrid asphalt coating agent for repair and reinforcement of asphalt and asphalt coated the same}

The present invention relates to an organic-inorganic hybrid asphalt concrete coating agent for repairing and reinforcing asphalt, to a method of repairing and reinforcing asphalt using the same, and a method of repairing and reinforcing asphalt using the same.

The most commonly used pavement material for roads is Bitumen asphalt concrete, which is widely applied to road pavement due to advantages such as short construction period and economical efficiency, but has disadvantages of instability and short lifespan. When beetmin is exposed to the outside, chemical changes and oxidation proceeds due to UV rays and moisture, and it loses its elasticity and adhesion over time. Eventually, due to such a decrease in physical properties, vitrification loses the adhesive strength of the aggregate, resulting in cracks and the like. When moisture oxidation and radiant heat pass through the space between the generated cracks, the asphalt corrosion process proceeds rapidly. In addition, a thread crack occurs due to deterioration, an asphalt adhesive component flows down due to a temperature increase in summer, and an asphalt adhesive component disappears by automobile tires, and only aggregate remains, and the cracking phenomenon is accelerated.

In addition, as the snow turns into moisture due to heavy snowfall in winter and the use of a large amount of calcium chloride, it penetrates into the asphalt, and the moisture that penetrates by the temperature decrease is frozen again and expands, accelerating asphalt cracking, and exposure to moisture for a long time during a rainy season in summer. In the case of the city, a pot hole is immediately caused, which causes a traffic accident due to the occurrence of irregularities on the road surface. The economic cost of the short repair cycle of the asphalt road is enormous. Also, the asphalt from repaving after cutting is heated to 190~230℃ with high heat, and the use of heavy equipment according to the pavement produces very large carbon dioxide emissions, and waste ascon is environmentally friendly. Has a profound effect on.

In order to reinforce the shortcomings of asphalt, it is necessary to construct an asphalt protective coating that is resistant to moisture and temperature.

Korea Registration No. 10-1346602 (announced 2013.12.20) Korean registration number 10-0984793 (announced 2010.09.27)

The present invention can improve the physical properties of asphalt concrete (=ascon) by greatly increasing the adhesion and bonding strength of asphalt concrete (=ascon), which can increase the water resistance and abrasion resistance of asphalt concrete (=ascon) applied to roads, and the ascon coating as a component of the ascon coating agent. It is intended to provide a physical property improver for ascon coatings.

The physical property improver for an ascon coating agent of the present invention for achieving the above object includes an elastic acrylate copolymer containing trialkoxysilane.

Another object of the present invention relates to an organic-inorganic hybrid asphalt concrete coating agent for repair and reinforcement of asphalt, and includes the property improver.

In addition, another object of the present invention relates to a pavement repair and reinforcement construction method of asphalt using the organic-inorganic hybrid ascon coating agent and/or asphalt coated on the surface with an organic-inorganic hybrid ascon coating agent.

In addition, an object of the present invention is to provide a construction method for repairing and reinforcing a pot-hole of a road by using the organic-inorganic hybrid asphalt concrete coating agent.

The physical property improver for an ascon coating agent of the present invention improves mechanical properties such as tensile strength, tear strength, adhesion strength, and elongation of the ascon coating agent, and improves chemical resistance, water resistance, and mechanical properties of asphalt repaired and reinforced with the ascon coating agent. By doing so, it is possible to improve the long-term life stability of asphalt through effects such as crack prevention and oxidation prevention.

The term "ascon" used in the present invention means asphalt concrete.

Hereinafter, the present invention will be described in more detail.

The physical property improver for an ascon coating agent of the present invention is a material that improves the mechanical properties of the ascon coating agent, and includes an elastic acrylate copolymer containing trialkoxysilane.

When repair and reinforcement is performed by coating the pavement surface of asphalt with the ascon coating agent introduced above, the trialcohol group silane of the physical property improver, which is a component of the ascon coating agent, increases adhesion, bonding and/or adhesion to the aggregate of ascon, and the coating agent As the component increases the coating power with asphalt, the long-term retention of the coating layer is increased by increasing the wear resistance due to tire friction and preventing the flow down due to heat, and as a result, it is possible to improve the long-term life stability of the asphalt.

An example of the mechanism of increasing adhesion between the asphalt concrete coating and the aggregate component of asphalt is illustrated in Fig. 1 and Fig. 2.

[Picture 1]

[Picture 2]

The elastic acrylate copolymer containing the trialkoxysilane constituting the physical property improving agent of the present invention is allyl methacrylate, butyl acrylate, 2-(C ₁ ~ C ₃ alkyl) (C ₅ ~ C ₁₀ alkyl) A copolymer obtained by polymerizing a composition containing acrylate, acrylonitrile, trialkoxysilane-based monomer and acrylic acid using water as a solvent by emulsion polymerization, or using the composition as an organic solvent It may be a non-aqueous copolymer prepared through solution polymerization.

When water is used as a solvent, an emulsifier and/or a polymerization initiator may be used in the emulsion polymerization. As the emulsifier, an anionic emulsifier such as an alkylbenzene sulfonate salt or SLS (sodium lauryl sulphate) or a nonionic emulsifier may be used. . In addition, as the polymerization initiator, APS (ammonium peroxysulfate), KPS (potassium persulfate), or SPS (sodium persulfate) may be used.

When the solvent is polymerized using an organic solvent, benzene, toluene, xylene, ethyl acetate, butyl acetate, methyl ethyl ketone, MIBK (methyl isobutyl ketone), and the like may be used as the solvent. In addition, a polymerization initiator such as AIBN (azobisisobutyronitrile) or BPO (benzoyl peroxide) may be used.

The content of allyl methacrylate in the composition is 0.1 to 1.0% by weight, preferably 0.2 to 0.8% by weight, more preferably 0.35 to 0.70% by weight of the total weight of the composition. At this time, if the content of allyl methacrylate is less than 0.1% by weight, the polymer is easily released by asphalt and the tensile strength may decrease, and if it exceeds 1.0% by weight, the polymer does not swell and thus elasticity may decrease.

The content of 2-(C ₁ to C ₃ alkyl) (C ₅ to C ₁₀ alkyl) acrylate in the composition is 8.0 to 14.0% by weight, preferably 8.5 to 13.0% by weight, more preferably Is 9.0 to 12.0% by weight. And, 2-(C ₁ ~ C ₃ alkyl) (C ₅ ~ C ₁₀ alkyl) acrylate is preferably 2-(C ₁ ~ C ₂ alkyl) (C ₅ ~ C ₈ alkyl) acrylate It is preferable that it is, more preferably 2-(C ₂ alkyl)(C ₆ ~C ₈ alkyl)acrylate.

In addition, the content of acrylonitrile in the composition is 3.0 to 7.5% by weight, preferably 4.0 to 6.5% by weight, more preferably 4.2 to 6.0% by weight of the total weight of the composition. At this time, if the acrylonitrile content is less than 3.0% by weight, there may be a problem in that the strength of the ascon coating film is lowered, and if it exceeds 7.5% by weight, the coating agent becomes too hard, and thus there may be a problem that the elasticity of the coating film is greatly reduced. .

In addition, the content of the trialkoxysilane-based monomer in the composition is 3.0 to 6.0% by weight, preferably 3.5 to 5.5% by weight, more preferably 3.5 to 5.2% by weight of the total weight of the composition. At this time, if the content of the trialkoxysilane-based monomer is less than 3.0% by weight, the desired effect of the ascon coating agent to which the physical property improver is applied may not be obtained due to the formation of less trialcohol group silane functional groups in the copolymer. When used in less than 6.0% by weight, unreacted products And/or there may be a problem of reducing the purity and/or yield of the copolymer due to increased occurrence of unwanted reaction products, it is preferable to use it within the above range. In addition, as the trialkoxysilane-based monomer, 3-trialkoxysilylalkyl methacrylate or trialkoxy vinylsilane may be used, preferably 3-trialkoxysilylalkyl methacrylate. Rate can be used, more preferably 3-trimethoxysilylpropyl methacrylate, 3-triethoxysilylpropyl methacrylate, 3-tripropoxysilylpropyl methacrylate, 3-trimethoxysilyl It may include at least one selected from butyl methacrylate, 3-triethoxysilylbutyl methacrylate, and 3-tripropoxysilylbutyl methacrylate.

In addition, the content of acrylic acid in the composition is 0.1 to 1.0% by weight, preferably 0.2 to 0.8% by weight, more preferably 0.32 to 0.75% by weight of the total weight of the composition.

And, the _{content of the (C 1} ~ C ₅ straight-chain alkyl) acrylate in the composition is allyl methacrylate in the composition, 2- (C ₁ ~ C ₃ alkyl) (C ₅ ~ C ₁₀ alkyl) This is the remaining amount excluding acrylate, acrylonitrile, trialkoxysilane-based monomer and acrylic acid. In addition, (C ₁ to C ₅ straight-chain alkyl) acrylate may preferably use (C ₂ to C ₅ straight-chain alkyl) acrylate, more preferably (C ₄ to C ₅ straight chain It is better to use an alkyl) acrylate.

The copolymer prepared by polymerizing such a composition may have a weight average molecular weight of 50,000 or more.

In the present invention, the organic-inorganic hybrid ascon coating agent for repairing and reinforcing asphalt (hereinafter, defined as'ascon coating agent') includes a property improving agent including a copolymer prepared by copolymerizing the above-described composition.

The ascon coating agent of the present invention may be a room temperature ascon coating agent (or a water-soluble arccon coating agent) type or a non-aqueous ascon coating agent type.

[Room temperature (water-soluble) ascon coating agent]

The ascon coating agent of the room temperature ascon coating agent Tip includes a property improver, an aqueous asphalt emulsion, a filler, an adhesive, a drying enhancer, and an antifoaming agent.

Among the components of the room temperature ascon coating agent, the property improver is as described above, and the content of the property improver may be 6 to 15% by weight, preferably 7 to 14% by weight, more preferably 8.5 to 12.0% by weight of the total weight of the coating agent. have. At this time, if the content of the property improver is less than 6% by weight, the effect of improving the properties of the coating agent may be insufficient, and if it is used in excess of 15% by weight, the miscibility and compatibility with other compositions in the coating agent are poor. Since there may be a problem of reducing physical properties, it is recommended to use it within the above range.

Among the ingredients of the room temperature ascon coating agent, the filler plays a role of increasing the strength of the coating layer (or coating film) by binding to the friction, abrasion resistance, and silane, and its content is 20 to 30% by weight, preferably It may contain 22 to 28% by weight, more preferably 22.5 to 27.5% by weight. At this time, if the content of the filler is less than 20% by weight, the coating layer formed on the asphalt surface may not be able to secure sufficient friction resistance and abrasion resistance, and if it is used in excess of 30% by weight, the flatness of the coating layer may be lowered due to excessive use. Since it is possible to reduce the long-term life stability of the coated layer and/or the installed asphalt by increasing the friction with the tire, etc., it is recommended to use it within the above range.

In addition, among the components of the room temperature ascon coating agent, the adhesive may be a general adhesive used in the art, and a preferred example, rosin ester emulsion may be used. And, the content thereof may include 0.5 to 3.0% by weight, preferably 0.8 to 2.5% by weight, more preferably 0.75 to 2.00% by weight of the total weight of the room temperature ascon coating agent. At this time, if the amount of the adhesive exceeds 3.0% by weight, the viscosity of the room temperature ascon coating agent may be greatly increased, and thus there may be a problem in that the coating film processability of the coating agent is deteriorated.

In addition, the drying improver component of the room temperature ascon coating agent plays a role of increasing the drying speed of the coating agent after applying the room temperature ascon coating agent on the asphalt surface, and the drying enhancer includes methanol, ethanol, isopropyl alcohol, and butyl cellosolve (butyl cellosolve). cellosolve), and preferably at least one selected from ethanol, isopropyl alcohol, and butyl cellosolve may be used. In addition, the content of the drying enhancer may include 4.0 to 8.0% by weight, preferably 4.0 to 7.0% by weight, and more preferably 4.5 to 6.0% by weight, based on the total weight of the room temperature ascon coating agent. At this time, if the content of the drying enhancer is less than 4.0% by weight, there may be a problem that the curing speed of the coating agent is slow and the asphalt repair and reinforcement construction time is prolonged.If it is used in excess of 8.0% by weight, the viscosity of the coating agent becomes too low due to excessive use. Coating properties and workability are reduced, and drying proceeds too quickly to lower the surface smoothness of the coating layer, so it is recommended to use within the above range.

In addition, the antifoaming agent serves to remove and/or prevent the occurrence of air bubbles generated when mixing the components of the room temperature ascon coating agent or when applying the coating agent, and as the antifoaming agent, a general one used in the art may be used, Preferably, at least one selected from mineral oil-based, silicone-based, and mixtures thereof may be used. And, the content of the antifoaming agent is 0.01 to 0.30% by weight, preferably 0.05 to 0.25% by weight, more preferably 0.05 to 0.20% by weight of the total weight of the coating agent, and if the content of the antifoaming agent is less than 0.01% by weight, the amount used is too small. Its use may be insignificant.

In addition, among the components of the room temperature ascon coating agent, the aqueous asphalt emulsion serves as a binder for the coating agent and an ascon reinforcing agent, and the aqueous asphalt emulsion may use a general aqueous asphalt emulsion used in the art, and a preferred embodiment is, for example, It is possible to use the commercially available brand name RS-(C)-1 of Korea Oil. In addition, the content is the remaining amount of the total weight of the room temperature ascon coating agent in addition to the above-described components.

Ascon coating film formed by the above-described room temperature ascon coating agent, when measured according to KS F 4917, has a tensile strength of 7.7 N/mm ² or higher, preferably 7.9 to 9.0 N/mm ² , more preferably 8.0 to 8.8 N/mm ² It can have a tensile strength of

In addition, when measured according to KS F 4917, it may have a tear strength of 10.0 N or more, preferably 10.0 to 12.0 N, more preferably 10.0 to 11.5 N.

In addition, when measured according to KS F 4917, it may have an elongation of 480% or more, preferably 480 to 570%, and more preferably 480 to 560%.

In addition, when measured in accordance with KS F 3211 (2015), the adhesion strength is 2.5 N/mm ² or more, preferably 2.7 to 3.5 N/mm ² , more preferably 2.8 to 3.4 N/mm ² I can have it.

[Non-aqueous ascon coating agent]

Next, the ascon coating agent of the water-insoluble ascon coating agent tee may include a physical property improver, a cutback asphalt, a filler, an adhesive, a dimer acid, and an antifoaming agent.

The property improver is as described above, and the content of the property improver may be 6 to 15% by weight, preferably 7 to 14% by weight, more preferably 8.5 to 12.0% by weight of the total weight of the water-insoluble ascon coating agent. have. At this time, if the content of the property improver is less than 6% by weight, the effect of improving the properties of the coating agent may be insufficient, and if it is used in excess of 15% by weight, the miscibility and compatibility with other compositions in the coating agent are poor. Since there may be a problem of reducing physical properties, it is recommended to use it within the above range.

Among the components of the water-insoluble ascon coating agent, the filler serves to increase the friction resistance, abrasion resistance, tensile strength, tear strength, adhesion, etc. of the coating layer (or coating film), the content of which is 20 to 30 of the total weight of the water-insoluble ascon coating agent. It may contain weight%, preferably 22 to 28% by weight, more preferably 22.5 to 27.5% by weight. At this time, if the content of the filler is less than 20% by weight, the coating layer formed on the asphalt surface may not be able to secure sufficient friction resistance and abrasion resistance, and if it is used in excess of 30% by weight, the flatness of the coating layer may be lowered due to excessive use. Since it is possible to reduce the long-term life stability of the coated layer and/or the installed asphalt by increasing the friction with the tire, etc., it is recommended to use it within the above range.

In addition, among the components of the water-insoluble ascon coating agent, the adhesive serves to enhance adhesion between the coating agent and the existing ascon surface, and one selected from rosin ester and hydrocarbon may be used. And, the content thereof may include 0.5 to 3.0% by weight, preferably 0.8 to 2.5% by weight, more preferably 0.75 to 2.00% by weight of the total weight of the water-insoluble ascon coating agent. At this time, if the amount of the adhesive is less than 0.5% by weight, the amount of the amount of the adhesive is too small, so that the strength and adhesion promotion effect may be insufficient.If the amount of the adhesive exceeds 3.0% by weight, the secondary viscosity of the room temperature ascon coating agent is greatly increased, and the coating of the coating agent Since there may be a problem of poor processability, it is recommended to use it within the above range.

Among the components of the water-insoluble ascon coating agent, the dimer acid serves to prevent peeling and stabilize ascon, and may include one selected from stearic acid, palmitic acid, oleic acid, and linoleic acid. And, and, the content thereof may include 0.1 to 1.2% by weight, preferably 0.2 to 1.0% by weight, more preferably 0.25 to 0.80% by weight of the total weight of the water-insoluble ascon coating agent. At this time, if the dimer acid content is less than 0.1% by weight, the amount used is too small, and the effect generated by using it may be insufficient.If it is used in excess of 1.2% by weight, the inherent function, tensile strength, tear strength, and elastic modulus of the coating agent Rather, there may be a problem of dropping it, so it is better to use it within the above range.

In addition, among the components of the water-insoluble ascon coating agent, the antifoaming agent serves to remove and/or prevent the generation of air bubbles generated when mixing the components of the coating agent or when applying the coating agent. It may be used, and preferably at least one selected from mineral oil-based antifoaming agents, silicone-based antifoaming agents, and mixtures thereof may be used. And, the content of the antifoaming agent is 0.01 to 0.30% by weight, preferably 0.05 to 0.25% by weight, more preferably 0.05 to 0.20% by weight of the total weight of the coating agent, and if the content of the antifoaming agent is less than 0.01% by weight, the amount used is too small. The use effect thereof may be insufficient, and if the content exceeds 0.30% by weight, there may be problems of lowering surface tension such as poor coating film formation and cratering fish eye, so it is recommended to use within the above range.

In addition, the cutback asphalt among the components of the water-insoluble ascon coating agent is a liquid asphalt obtained by dissolving the asphalt in a solvent to give it a viscosity suitable for work, and cutback asphalt may be used, and preferably, a rapid curing cutback asphalt may be used. . The content of the cutback asphalt of the water-insoluble ascon coating agent is the weight% of the remaining amount of the total weight of the coating agent excluding the components described above.

Ascon coating film formed with a water-insoluble ascon coating agent, when measured according to KS F 4917, has a tensile strength of 7.8 N/mm ² or more, preferably 8.0 to 9.0 N/mm ² , more preferably 8.0 to 8.5 N/mm ² It can have tensile strength.

In addition, when measured according to KS F 4917, it may have a tear strength of 10.0 N or more, preferably 10.0 to 11.5 N, more preferably 10.0 to 11.0 N.

In addition, when measured according to KS F 4917, it may have an elongation of 480% or more, preferably 500 to 570%, and more preferably 520 to 560%.

In addition, when measured according to KS F 3211 (2015), the adhesion strength is 2.5 N/mm ² or more, preferably, the adhesion strength is 3.0 to 3.8 N/mm ² , and more preferably, the adhesion strength is 3.2 to 3.7 N/mm ² . I can have it.

After paving the asphalt such as roads, the asphalt repair and reinforcement construction may be performed by coating the asphalt surface with the ascon coating agent of the present invention described above.

In addition, for a preferred example, after repairing and reinforcing asphalt in which a pot-hole has occurred, long-term storage stability of asphalt may be increased by coating the asphalt surface of the repaired and reinforced asphalt with the ascon coating agent of the present invention.

Hereinafter, the present invention will be described in more detail through examples, but the following examples do not limit the scope of the present invention, which should be construed to aid understanding of the present invention.

[Example]

Example 1: Preparation of property improver for ascon coating agent

Allyl methacrylate 0.5% by weight, 2-ethylhexyl acrylate 10% by weight, acrylonitrile 5% by weight, 3-trimethoxysilylpropyl methacrylate 4% by weight, acrylic acid 0.5% by weight And the remaining amount of butyl acrylate was mixed to prepare a composition.

Next, the composition was emulsion-polymerized using sodium lauryl sulphate as an emulsifier, ammonium peroxysulfate (APS) as a polymerization initiator, and water as a solvent to prepare an elastic acrylate copolymer containing trialkoxysilane. Ready.

Examples 2 to 3 and Comparative Examples 1 to 2

An elastic acrylate copolymer was prepared in the same manner as in Example 1, but after preparing a composition by varying the composition as shown in Table 1 below, each copolymer was prepared by emulsion polymerization to prepare each of the physical property enhancers.

Classification (% by weight) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Aryl methacrylate 0.5 0.5 0.5 0.5 0.5 2-ethylhexylacrylate 10 10 10 10 10 Acrylonitrile 5 5 5 5 5 3-trimethoxysilylpropyl methacrylate ⁽³⁾ 4 3.5 5.5 2.0 7.0 Acrylic acid 0.5 0.5 0.5 0.5 0.5 Butyl Acrylate ⁽¹⁾ Remaining balance Remainder
Balance Remainder
Balance Remainder
Balance Remainder
Balance (1): (C ₁ ~ C ₅ straight-chain alkyl) acrylate

Preparation Example 1: Preparation of organic-inorganic hybrid asphalt concrete coating agent for asphalt repair and reinforcement

10% by weight of the physical property improver of Example 1 _{, 25% by weight of SiO 2} powder (200 mesh) as a filler, 1.5% by weight of rosin ester emulsion as an adhesive, 5.4% by weight of ethanol as a drying agent, and an antifoaming agent (manufacturer: Sannovco brand name NDW ) 0.1% by weight and the remaining amount of aqueous asphalt emulsion (brand name: RF-(C)-1, manufacturer: Korea Oil) was mixed to prepare an organic-inorganic hybrid ascon coating agent (room temperature ascon coating agent) for asphalt repair and reinforcement.

Preparation Examples 2 to 3 and Comparative Preparation Examples 1 to 2

A room temperature ascon coating agent was prepared in the same manner as in Preparation Example 1, but each of the room temperature ascon coating agents was prepared by different types of physical property improvers as shown in Table 2 below.

Preparation Examples 4 to 5 and Comparative Preparation Examples 3 to 4

A room temperature ascon coating was prepared in the same manner as in Preparation Example 1, but each of the room temperature ascon coatings was prepared by varying the content of the components as shown in Table 2 below.

division
(weight%) Property improver Filler Adhesive dry
Enhancer Antifoam Aqueous asphalt
emulsion Manufacturing Example 1 10
(Example 1) 30 1.5 5.4 0.1 Remainder
Balance Manufacturing Example 2 10
(Example 2) 30 1.5 5.4 0.1 Remainder
Balance Manufacturing Example 3 10 (Example 3) 30 1.5 5.4 0.1 Remainder
Balance Manufacturing Example 4 8 (Example 1) 30 1.5 5.4 0.1 Remainder
Balance Manufacturing Example 5 12.5 (Example 1) 30 1.5 5.4 0.1 Remainder
Balance Comparative Production Example 1 10 (Comparative Example 1) 30 1.5 5.4 0.1 Remainder
Balance Comparative Production Example 2 10 (Comparative Example 2) 30 1.5 5.4 0.1 Remainder
Balance Comparative Production Example 3 5.2 (Example 1) 30 1.5 5.4 0.1 Remainder
Balance Comparative Production Example 4 15.5
(Example 1) 30 1.5 5.4 0.1 Remainder
Balance

Experimental Example 1: Measurement of physical properties of an ascon coating agent at room temperature

In order to measure the physical properties of the coating agents of Preparation Example and Comparative Preparation Example, an ascon coating film having a thickness of 2 mm was formed using the room temperature ascon coating agent. And, the physical properties of the prepared ascon coating film were measured in the following manner, and the results are shown in Table 3 below.

(1) Tensile strength, tear strength and elongation are measured in accordance with KS F 4917.

(2) The adhesion strength (N/mm ² ) was measured by KS F 3211 (2015).

division The tensile strength
(N/mm ² ) Tear strength
(N) Adhesion strength
(N/mm ² ) Elongation
(%) Manufacturing Example 1 8.4 11.0 3.2 550 Manufacturing Example 2 8.2 10.5 3.1 532 Manufacturing Example 3 8.7 11.2 2.9 509 Manufacturing Example 4 7.9 10.2 2.8 510 Manufacturing Example 5 8.3 11.5 3.4 482 Comparative Production Example 1 7.4 10.1 2.6 533 Comparative Production Example 2 8.4 10.3 3.1 475 Comparative Production Example 3 6.9 9.3 1.8 612 Comparative Production Example 4 8.8 11.7 3.5 426

Of the coating film coated and cured with the room temperature ascon coating agent in Table 3 above Looking at the physical property measurement results, Manufacturing Examples 1 to 5 have a ^{tensile strength of 7.7 N/mm 2} or more, a tear strength of 10.0 N or more, an elongation of 480% or ^{more, and an adhesion strength of 2.5 N/mm 2} or more, and have excellent mechanical properties. I could confirm.

In addition, in the case of Comparative Preparation Example 1, which is an ascon coating agent using the physical property improver of Comparative Example 1, when compared to Preparation Example 2 (the use of the physical property improver of Example 2), there is a problem that the tensile strength is sharply decreased and the adhesion strength is greatly decreased. It could be confirmed that there is.

In addition, in the case of Comparative Preparation Example 2, which is an ascon coating agent using the physical property improver of Comparative Example 2, as compared to Preparation Example 3 (the use of the physical property improver of Example 3), there was little difference in adhesion strength, tensile, and tear strength, but rather elongation. There was a problem of this significantly lowering, and there was also a problem of low yield when preparing a copolymer, which is a property improving agent.

And, in the case of Comparative Production Example 3 in which the physical property improver was used in an amount of less than 6% by weight in the manufacture of the ascon coating agent, there is a problem that not only the adhesion strength but also the tensile strength and tear strength are sharply decreased when compared with Preparation Examples 1 and 4 In the case of Comparative Production Example 4 using more than 15% by weight of the property improver, when compared with Production Example 5, there was a problem that the elongation was significantly lowered.

Preparation Example 6: Preparation of water-insoluble ascon composition

10% by weight of the physical property improver of Example 1 _{, 25% by weight of SiO 2} powder (200 mesh) as a filler, 1.5% by weight of rosin ester emulsion as an adhesive, 0.4% by weight of stearic acid as a dimer acid, and an antifoaming agent (manufacturer: San Nopco brand name NDW) Organic-inorganic hybrid asphalt concrete for asphalt repair and reinforcement by mixing 0.1% by weight and the remaining amount of rapid-curing cutback asphalt (brand name MS-0, manufacturer Korea emulsion, solvent: gasoline, viscosity = 75~150 SFS at 25℃) A coating agent (a non-aqueous ascon coating agent) was prepared.

Experimental Example 2: Measurement of physical properties of non-aqueous ascon

The physical properties of the water-insoluble ascon prepared in Preparation Example 6 were measured in the same manner as in Experimental Example 1, and the results are shown in Table 4 below.

division The tensile strength
(N/mm ² ) Tear strength
(N) Adhesion strength
(N/mm ² ) Elongation
(%) Manufacturing Example 6 8.2 10.4 3.6 540

Through the above Examples and Experimental Examples, it was confirmed that the physical properties of the physical property improver for the asphalt concrete coating agent of the present invention, and the organic-inorganic hybrid asphalt concrete coating agent for asphalt repair and reinforcement prepared by applying the same, are very excellent. By using the organic/inorganic hybrid ascon coating agent of the present invention to repair and reinforce asphalt pavements such as roads (e.g., repair portholes of roads, etc.), the chemical resistance, water resistance, and mechanical properties of asphalt are improved. Long-term life stability of asphalt can be greatly improved through effects such as crack prevention and oxidation prevention.

Claims (11)

It includes an elastic acrylate copolymer containing trialkoxysilane,
The elastic acrylate copolymer is allyl methacrylate 0.1 to 1.0 wt%, 2-(C ₁ to C ₃ alkyl) (C ₅ to C ₁₀ alkyl) acrylate 8.0 to 14.0 wt%, acrylonitrile 3.0 It is characterized in that it is a copolymer obtained by polymerizing a composition containing ~ 7.5 wt%, trialkoxysilane-based monomer 3.0 ~ 6.0 wt%, acrylic acid 0.1 ~ 1.0 wt%, and the balance (C ₁ ~ C _{5 linear alkyl) acrylate} Ascon coating agent for improving properties. The method of claim 1, wherein the trialkoxysilane-based monomer is 3-trimethoxysilylpropyl methacrylate, 3-triethoxysilylpropyl methacrylate, 3-tripropoxysilylpropyl methacrylate, and 3-tri A physical property improver for an ascon coating agent comprising methoxysilylbutyl methacrylate, 3-triethoxysilylbutyl methacrylate, 3-tripropoxysilylbutyl methacrylate or trialkoxy vinylsilane . delete An organic-inorganic hybrid asphalt concrete coating agent for repairing and reinforcing asphalt, comprising the property improver of claim 1 or 2. The organic-inorganic hybrid ascon coating agent for asphalt repair and reinforcement according to claim 4, comprising the property improver, aqueous asphalt emulsion, filler, adhesive, drying enhancer, and antifoaming agent. The aqueous asphalt emulsion according to claim 5, wherein the physical property improver 6 to 15% by weight, filler 20 to 30% by weight, adhesive 0.5 to 3.0% by weight, drying enhancer 4.0 to 8.0% by weight, antifoaming agent 0.01 to 0.30% by weight and the balance Organic-inorganic hybrid asphalt concrete coating for repair and reinforcement of asphalt, characterized in that it comprises a. The organic-inorganic hybrid ascon coating agent for asphalt repair and reinforcement according to claim 4, comprising the property improver, cutback asphalt, filler, adhesive, dimer acid, and antifoaming agent. 8. Organic-inorganic hybrid asphalt concrete coating agent for repairing and reinforcing asphalt, comprising Asphalt coated on the surface with the organic-inorganic hybrid ascon coating agent of claim 4. A method of repairing and reinforcing asphalt pavement using the organic-inorganic hybrid asphalt concrete coating agent of claim 4. A construction method for repairing and reinforcing pot-holes of roads using the organic-inorganic hybrid asphalt concrete coating agent of claim 4.