Coating composition for reinfocing of pavement grooving and grooving method for pavement

Abstract

The present invention provides a coating material for reinforcing grooving pavement characterized by comprising 15 to 45 weight% of a solid content including an aqueous acrylic resin and a silane compound; and 55 to 85 weight% of water, thereby ensuring excellent penetration into a substrate (pavement), which prevents the phenomenon of peeling off the surface of the pavement.

Description

Technology Field

[0001] The present invention relates to the field of construction technology, and more specifically, to a coating material for reinforcing grooving pavement and a grooving pavement construction method using the same. Background Technology

[0002] Grooving pavement refers to a technology that creates grooves at regular intervals on the road surface to enhance drainage performance and improve skid resistance.

[0003] Major problems have been identified, such as microcracks at the edges of the groove, spalling, and premature damage caused by repetitive loading and climatic factors (freezing and thawing, moisture penetration, etc.).

[0004] To address this, technologies have been developed to form a reinforcing layer by applying a coating material after grooving.

[0005] Polymer-based coating materials (epoxy resin, polyurethane, acrylate, etc.) penetrate and cure on the surface surrounding the groove to enhance adhesion and wear resistance, and provide a moisture barrier function to suppress the occurrence of cracks caused by freezing and thawing.

[0006] Inorganic coating materials (cement-based, silica-based, and silicate-based coating materials) fill fine pores and increase surface density, providing water resistance and chemical stability.

[0007] The composite coating material (polymer + inorganic) is a composite material formed by mixing a polymer resin and an inorganic powder. It is characterized by a coating layer that is flexible yet strong, absorbing stress concentration occurring at the edges of grooves and simultaneously improving crack resistance and wear resistance.

[0008] However, there was a problem in that these conventional coating materials had poor penetration into the substrate (packaging), which limited their ability to prevent peeling of the packaging surface. Prior art literature

[0009] Korean Registered Patent 10-1691165 Korean Registered Patent 10-2494246 Korean Registered Patent 10-2384566 Korean Registered Patent 10-2740846 The problem to be solved

[0010] The present invention was developed to solve the above-mentioned problems and aims to provide a coating material for reinforcing grooving pavements that has excellent penetration into a substrate (pavement) to prevent the phenomenon of peeling off the pavement surface. means of solving the problem

[0011] To solve the above problem, the present invention provides a coating material for reinforcing grooving pavement characterized by comprising 15 to 45 weight% of a solid content including an aqueous acrylic resin and a silane compound; and 55 to 85 weight% of water.

[0012] It is preferable to include 5 to 28 weight% of the above aqueous acrylic resin; 5 to 20 weight% of the above silane compound; and 55 to 85 weight% of the above water.

[0013] The above water-based acrylic resin is preferably one or more selected from the group consisting of styrene acrylic copolymer resin, pure acrylic resin, and acrylic urethane hybrid resin.

[0014] The above aqueous acrylic resin is preferably manufactured by the synthesis of one or more of 2-ethylhexyl acrylate, butyl acrylate, epoxy acrylate, methyl methacrylate, and urethane acrylate.

[0015] The above silane compound preferably comprises 3-methacryloxypropyltrimethoxysilane.

[0016] The above solid content preferably comprises 1 to 4 weight percent of an adhesion promoter.

[0017] The above adhesion promoter is preferably one or more selected from the group consisting of water-dispersible rosin resin, petroleum resin, urethane resin, phenolic resin, polyamide resin, and polyester resin.

[0018] It is preferable to further include 0.5 to 3 weight percent of a surfactant.

[0019] It is preferable that the above surfactant is one or more selected from the group consisting of anionic type surfactants, cationic type surfactants, nonionic type surfactants, and polyoxyethylene nonionic type surfactants.

[0020] It is preferable to further include 0.3 to 2 weight percent of a basic substance.

[0021] The present invention provides a grooving paving method using the above-described grooving paving reinforcement coating material, characterized by comprising: a grooving step of forming a grooving pavement by cutting the surface of a road pavement body; and a coating material road step of applying the above-described grooving paving reinforcement coating material to the surface of the grooving pavement. Effects of the invention

[0022] The present invention provides a coating material for reinforcing grooving pavements that has excellent penetration into a substrate (pavement) to prevent peeling of the pavement surface. Specific details for implementing the invention

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0024] The coating material for reinforcing grooving pavement according to the present invention basically comprises 15 to 45 weight% of solids including an aqueous acrylic resin and a silane compound; and 55 to 85 weight% of water.

[0025] More specifically, it is composed of 5 to 28 weight% aqueous acrylic resin; 5 to 20 weight% silane compound; and 55 to 85 weight% water.

[0026] This has a low solid content (aqueous acrylic resin, silane compound) and a high water content, resulting in excellent penetration into the substrate (packaging), which has the effect of preventing peeling of the packaging surface.

[0027] Here, solid content refers to the component that remains on the substrate in a solid state without evaporating when the liquid coating agent is dried.

[0029] Water-based acrylic resin can be implemented by one of styrene acrylic copolymer resin, pure acrylic resin, acrylic urethane hybrid resin, or a mixture thereof.

[0030] This can be produced by the synthesis of monomers such as 2-ethylhexyl acrylate, butyl acrylate, epoxy acrylate, methyl methacrylate, and urethane acrylate.

[0031] This is impregnated into the surface of the grooved packaging and serves to increase the durability, impact resistance, heat resistance, tensile strength, and hardness of the packaging body.

[0032] Water-based acrylic resins can be anionic or nonionic, and when anionic resins with a pH of 8 to 9 are used, they have the advantage of excellent mixing with water and excellent storage stability.

[0033] This is mixed in an amount of 5 to 28 weight percent, but if it is included in excess of 28 weight percent, the viscosity of the acrylic resin increases excessively, which increases the difficulty of construction and may reduce the penetration power into the substrate.

[0035] Silane (SiH₄) is an inorganic material composed of Si and H, with a structure corresponding to carbon-based methane (CH₄). Silane compounds refer to various compounds in which organic groups (-R), alkoxy groups (-OR), halogens (-Cl), etc., are substituted into the basic silane structure.

[0036] In the present invention, it is most preferable to use 3-methacryloxypropyltrimethoxysilane.

[0037] Since it contains ceramic particles, it impregnates the packaging to improve durability and waterproofing performance, and also increases adhesion, penetration, impact resistance, and heat resistance.

[0038] This is mixed in an amount of 5 to 20 weight percent. If it is included in excess of 20%, the solid content of the coating agent may increase excessively, and if it is included in less than 5 weight percent, adhesion, penetration, impact resistance, heat resistance, etc. may decrease.

[0040] Water acts as a solvent to dissolve the coating material.

[0041] Since the coating material for reinforcing grooving pavement according to the present invention dissolves the coating material with water rather than an organic solvent, it does not generate toxicity or odor, enabling environmentally friendly manufacturing, and allows for easy application even if moisture is present on the substrate.

[0042] In addition, since the viscosity of the coating material can be controlled to a low level due to the high water content, easy application using sprays or similar methods is possible.

[0043] Water is mixed in an amount of 55 to 85 weight percent, and accordingly, solids (aqueous acrylic resin, silane compound) are mixed in an amount of 15 to 45 weight percent.

[0044] If the solid content exceeds 45 weight%, the penetration power into the substrate may be reduced, and if dust or foreign matter is present on the substrate, peeling may occur or the coating agent may detach from the substrate when the coating agent is dried.

[0045] If the solid content is less than 15 weight percent, the viscosity may decrease excessively, increasing the difficulty of construction, and the adhesive strength of the coating agent may decrease, resulting in the coating agent not adhering properly to the substrate.

[0047] In the coating material for reinforcing grooving pavement according to the present invention, the solid content may further include an adhesion promoter, which serves to improve the adhesion of the coating material and reinforce its hardness.

[0048] One or a mixture of two or more of water-dispersible rosin resin, petroleum resin, urethane resin, phenolic resin, polyamide resin, and polyester resin is used.

[0049] The adhesion promoter is mixed in an amount of 1 to 4 weight percent. If it is included in an amount exceeding 4 weight percent, the adhesive strength of the coating material may increase excessively, which may increase the difficulty of construction, and if it is included in an amount less than 1 weight percent, the adhesive strength may decrease.

[0051] The coating material for reinforcing grooving pavement according to the present invention may further include a surfactant (liquid), which helps to mix the aqueous acrylic resin, silane compound, and adhesion promoter, and is mixed in an amount of 0.5 to 3 weight percent.

[0052] One or a mixture of two or more of anionic type surfactants, cationic type surfactants, nonionic type surfactants, and polyoxyethylene nonionic type surfactants is used.

[0054] The coating material for reinforcing grooving pavement according to the present invention may further include a basic substance, which serves to adjust the pH of the coating material, and is mixed in an amount of 0.3 to 2 weight percent.

[0055] Sodium hydroxide, ammonia water, etc. can be used.

[0057] The grooving paving method using the coating material for reinforcing grooving paving according to the present invention is carried out by the following process.

[0058] After cleaning the surface of the road pavement to be grooved, the surface of the road pavement is cut to form the grooved pavement.

[0059] A coating material for reinforcing the grooved pavement is applied to the surface of the grooved pavement so that the coating material impregnates the surface of the pavement and coats the surface of the pavement, thereby reinforcing the surface of the grooved pavement.

[0061] Hereinafter, experimental examples for verifying the physical properties of the present invention will be described.

[0062]

[0063] Table 1 is a formulation table of Examples 1 to 3 of the coating material for reinforcing grooving pavement according to the present invention.

[0064] Pure acrylic copolymer, water-dispersible 3-methacryloxypropyltriethoxysilane, water-dispersible rosin resin, and alkyl dimethylamine oxide were added to water and stirred at a temperature of 20°C for 2 hours.

[0065]

[0066] Table 2 is a formulation table of Comparative Examples 1 to 3, which is basically similar to the embodiments of the present invention, but has the following differences.

[0067] Comparative Example 1 is when the solid content is less than 15 weight% (when the water content is greater than 85 weight%), and Comparative Example 2 is when the solid content is greater than 45 weight% (when the water content is less than 55 weight%).

[0068] Comparative Example 3 is a case where no adhesion promoter was added.

[0069]

[0070] Table 3 shows the results of experiments evaluating viscosity, workability (drying status, peeling status), and adhesion for Examples 1 to 3 and Comparative Examples 1 to 3 of the present invention.

[0072] (1) Experimental Example 1: Viscosity measurement of the Example and Comparative Example

[0073] Viscosity was measured at a temperature of 60°C using an Asphalt Institute Vacuum Capillary Viscometer in accordance with ASTM D 2171.

[0075] (2) Experimental Example 2: Evaluation of workability according to solid content

[0076] After uniformly applying the coating materials according to Examples 1 to 3 and Comparative Examples 1 to 3 to the surface of a cement sheet, they were dried at a temperature of 20°C for 2 hours to observe whether the coating material was completely dried and whether delamination occurred, and the results are shown in Table 3.

[0077] As a result of the experiment, it was confirmed that the coating material of Examples 1 to 3 was completely dried after 2 hours of drying, and no peeling occurred.

[0078] Meanwhile, Comparative Example 2, which had a high solid content, was not completely dried by drying for 2 hours, and it was confirmed that the coating agent peeled off or detached in places on the surface of the cement sheet.

[0080] (3) Experimental Example 3: Evaluation of adhesion strength according to adhesion promoter content

[0081] The coating materials according to Examples 1 to 3 and the coating materials according to Comparative Examples 1 to 3 were uniformly applied to the surface of a cement sheet and dried at a temperature of 20°C for 2 hours. Afterward, it was checked whether the coating materials were properly adhered, and the results are shown in Table 3.

[0082] As a result of the experiment, it was confirmed that the coating material in Examples 1 to 3 was properly attached to the cement sheet.

[0083] Meanwhile, it was confirmed that Comparative Example 1, which had a low solid content, and Comparative Example 3, which did not have an adhesion promoter added, had the coating material not properly adhere to the cement sheet and separated.

[0085] The foregoing merely describes some preferred embodiments that can be implemented by the present invention. As is well known, the scope of the present invention should not be interpreted as being limited to the above embodiments, and all technical concepts that share the fundamental principles with the technical concept of the present invention described above shall be considered to be included within the scope of the present invention.

Claims

Claim 1 A coating material for reinforcing grooving pavement, characterized by comprising: 5-28% by weight of an aqueous acrylic resin produced by synthesizing one or more of 2-ethylhexyl acrylate, butyl acrylate, epoxy acrylate, methyl methacrylate, and urethane acrylate; 5-20% by weight of a silane compound including 3-methacryloxypropyltrimethoxysilane; 55-85% by weight of water; 1-4% by weight of an adhesion promoter selected from the group consisting of water-dispersible rosin resin, petroleum resin, urethane resin, phenolic resin, polyamide resin, and polyester resin; 0.5-3% by weight of a surfactant selected from the group consisting of anionic type surfactants, cationic type surfactants, nonionic type surfactants, and polyoxyethylene nonionic type surfactants; and 0.3-2% by weight of a basic substance. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 A grooving paving method using a grooving paving reinforcement coating material according to claim 1, characterized by comprising: a grooving step of cutting the surface of a road pavement to form a grooving pavement; and a coating material application step of applying the grooving paving reinforcement coating material to the surface of the grooving pavement.

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