KR102352951B1 - Finishing composition for protecting surface of concrete structure and steel structure having excellent visibility and finishing method for protecting surface of concrete structure and steel structure using the same - Google Patents

Abstract

The present invention provides a high visibility finishing agent composition for surface protection of concrete and steel structures, wherein the high visibility finishing agent composition comprises 10 to 80 wt% of an organic binder, 10 to 80 wt% of an inorganic filler, and 1 to 20 wt% of water. The organic binder includes 1 to 10 parts by weight of methyl hydrogen polysiloxane represented by chemical formula 1. High functionality and high visibility are achieved with excellent strength, abrasion resistance, durability, and waterproofness, and work efficiency is improved.

Description

High-visibility finishing agent composition for surface protection of concrete and steel structures, and surface protection finishing construction method of concrete and steel structures using the same THE SAME}

The present invention implements high functionality and high visibility with excellent strength, abrasion resistance, durability, waterproofness, etc., and improves work efficiency, thereby increasing the service period and reducing maintenance costs, in particular, frictional force with automobile tires A high-visibility finishing composition for surface protection of concrete and steel structures that can prevent deterioration of properties by preventing deterioration of properties and maintaining excellent visibility in the long term, as well as high visibility at night or in rainy weather, and surface protection finish of concrete and steel structures using the same It is about the construction method.

Structures on the road, such as roads, curbs, barriers, handrails, guard rails, etc., are installed with concrete or steel. In general, a reflector can be attached to a structure made of steel to easily secure the driver's visibility, but there is a problem in that it is difficult to attach a reflector to a concrete structure.

In addition, in the case of concrete and steel structures, there is a problem in that the safety of the driver is lowered because visibility is further reduced at night and in rainy weather. For this purpose, in some cases, a lane bottle that projects and reflects light on the lane of a concrete road is installed. In many cases, the effect could not be expected. In addition, due to the load of a moving vehicle, a phenomenon in which the lane bottle was damaged also occurred, which was pointed out as a cause of budget waste. Therefore, there is an urgent need for research on ways to improve the visibility of concrete and steel structures.

Accordingly, conventionally, a method of controlling the whiteness (WHITENESS) of the concrete composition or adding a bright color to the waterproof coating applied to the surface of concrete and steel structures was taken. However, the conventional method of controlling the whiteness (WHITENESS) of the concrete composition has a limit in improving visibility, and the method of adding a bright color to the conventional waterproof coating agent has poor adhesion strength and durability, so cracks easily occur after construction Or there was a problem that was easy to drop out. In particular, in the section where the vehicle runs at high speed, such as a highway, in most cases, the floor surface is easily damaged due to abrasion due to the weight of the vehicle, which not only deteriorates visibility again but also harms the aesthetics of the environment. In addition, if the road is easily affected by the surrounding construction environment (temperature or humidity) and the drying time is long, the efficiency of the construction work decreases or the friction coefficient decreases, which causes the car to slip. There was a problem that hindered the safe walking of pedestrians.

Republic of Korea Patent Registration No. 10-1311704 Republic of Korea Patent Registration No. 10-1537541 Republic of Korea Patent Registration No. 10-1734086 Republic of Korea Patent Registration No. 10-2095020

The present invention has been devised to solve the above problems, and an embodiment of the present invention has excellent durability and work efficiency, and has an excellent surface protection effect on concrete and steel structures such as roads, curbs, protective walls, handrails, guard rails, etc. In particular, it is possible to prevent deterioration of physical properties due to frictional force with automobile tires, etc., to maintain excellent visibility in the long term, and to show high visibility even at night or in rainy weather. An object of the present invention is to provide a toughness finishing agent composition and a method for surface protection finishing construction of concrete and steel structures using the same.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

One embodiment of the present invention is a high-visibility finishing composition for surface protection of concrete and steel structures comprising 10 to 80% by weight of an organic binder, 10 to 80% by weight of an inorganic filler, and 1 to 20% by weight of water;

The organic binder is 100 parts by weight of an acrylic urethane resin, 20 to 40 parts by weight of polymethyl methacrylate, 1 to 10 parts by weight of methylhydrogenpolysiloxane represented by the following Chemical Formula 1, and 1 to 10 parts by weight of a styrene-butadiene-acrylic acid copolymer , 0.01 to 5 parts by weight of zinc stearate, 0.01 to 5 parts by weight of sodium lauroylglutamate, 0.01 to 5 parts by weight of sodium carboxymethylcellulose, 0.01 to 5 parts by weight of hydroxypropylmethylcellulose, 1,3,5-tri (3 , 5-di-tert-butyl-4-hydroxybenzyl) isocyanate 0.01 to 5 parts by weight and 0.01 to 5 parts by weight of an antifoaming agent;

The inorganic filler is 100 parts by weight of calcium carbonate, 10 to 40 parts by weight of titanium dioxide, 10 to 40 parts by weight of glass beads, 1 to 10 parts by weight of halloysite, 1 to 10 parts by weight of zinc phosphate, 0.01 to 5 parts by weight of ammonium aluminum sulfate And it provides a high-visibility finishing composition for surface protection of concrete and steel structures comprising 0.01 to 5 parts by weight of a pigment.

[Formula 1]

In the above formula,

a is an integer from 10 to 300;

The polymethyl methacrylate is a porous polymethyl methacrylate having an average particle diameter of 5 to 30 μm and an average pore size of 0.1 to 2 μm;

The porous polymethyl methacrylate is prepared by mixing a polymethyl methacrylate (PMMA) polymer and a pluronic polymer in a weight ratio of 1: 0.1 to 1, and dissolving it in an organic solvent to prepare a mixed solution; preparing an emulsion by adding and emulsifying the mixed solution to an aqueous solution containing a surfactant; evaporating the organic solvent by heating the emulsion; and washing and drying the sunken porous polymethyl methacrylate (PMMA) particles after evaporating the organic solvent.

The porous polymethylmethacrylate has a surface coated with polydopamine;

The surface of the porous polymethyl methacrylate coated with polydopamine is mixed with a polymethyl methacrylate (PMMA) polymer and a pluronic polymer in a 1: 0.1 to 1 weight ratio, and dissolved in an organic solvent to prepare a mixed solution to do; preparing an emulsion by adding and emulsifying the mixed solution into an aqueous solution containing a dopamine solution and a surfactant represented by the following Chemical Formula 2; evaporating the organic solvent by heating the emulsion; and washing and drying the sunken porous polymethyl methacrylate (PMMA) particles after evaporating the organic solvent.

[Formula 2]

In the above formula,

R ₁ is hydrogen or an alkyl group having 1 to 4 carbon atoms,

x is an integer from 12 to 20;

n is an integer from 8 to 50;

The zinc phosphate (Zn ₃ (PO ₄ ) ₂ ) is a plate-shaped zinc phosphate;

The plate-shaped zinc phosphate is prepared by dissolving zinc hydroxide in water or hydrochloric acid diluted to a concentration of 15 to 30% by weight; preparing a precipitate of zinc carbonate while slowly adding an aqueous carbonate solution having a concentration of 15 to 30 wt% to the solution dropwise; preparing a plate-shaped zinc phosphate precipitate while slowly adding dropwise an aqueous phosphate solution having a concentration of 15 to 30 wt % to the solution containing the zinc carbonate precipitate; It may be prepared by a manufacturing method comprising the steps of filtering, washing with water and drying the solution containing the plate-shaped zinc phosphate precipitate.

In addition, another embodiment of the present invention is a surface protection finishing construction method of concrete and steel structures using the high-visibility finishing agent composition for surface protection of concrete and steel structures,

removing and cleaning impurities or deteriorated parts of concrete and steel structures; applying a surface reinforcing agent to the cleaned surfaces of the concrete and steel structures; applying a high-visibility finishing agent composition for surface protection of the concrete and steel structures to the surface of the applied surface reinforcing agent; applying a durability-improving coating agent to the surface of the applied high-visibility finishing composition for surface protection of concrete and steel structures; And it provides a surface protection finishing construction method of concrete and steel structures comprising the step of curing.

The surface strengthening agent is one selected from the group consisting of styrene-butadiene latex, polyacrylic ester, acrylic, ethyl vinyl acetate, methyl methacrylate, an organic binder of the high-visibility finishing composition for surface protection of concrete and steel structures, and mixtures thereof includes the above;

The durability improving coating agent may include at least one selected from the group consisting of acrylic-urethane, silane-based penetration enhancer, organic binder of the high-visibility finishing composition composition for surface protection of concrete and steel structures, and mixtures thereof.

According to the high-visibility finishing agent composition for surface protection of concrete and steel structures according to an embodiment of the present invention, and the surface protection finishing construction method of concrete and steel structures using the same, excellent strength, abrasion resistance, UV resistance, contamination resistance, salt damage resistance, neutralization resistance, By implementing freeze-thaw resistance, weather resistance, waterproofness, and visibility, it is possible to provide an excellent surface protection effect to concrete and steel structures such as roads, curbs, protective walls, handrails, and guard rails. In addition, the construction is easy, and after construction, the curing time is short, so that the efficiency of the operation can be improved.

Accordingly, it is possible to increase the service period and reduce the cost of maintenance, and there is an effect that can prevent deterioration of physical properties such as surface abrasion, cracks, and slippage due to frictional force with automobile tires. In addition, due to its high penetrability, excellent visibility can be maintained in the long term even when surface abrasion occurs, and the high reflectivity to the light emitted from the car's headlight shows high visibility even at night or in rainy weather to prevent vehicle collision accidents. can ensure the safety of

Hereinafter, embodiments of the present invention will be described in detail. However, this is provided as an example, and the present invention is not limited thereto, and the present invention is only defined by the scope of the claims to be described later.

One embodiment of the present invention is a high-visibility finishing composition for surface protection of concrete and steel structures comprising 10 to 80% by weight of an organic binder, 10 to 80% by weight of an inorganic filler, and 1 to 20% by weight of water;

The organic binder is 100 parts by weight of an acrylic urethane resin, 20 to 40 parts by weight of polymethyl methacrylate, 1 to 10 parts by weight of methylhydrogenpolysiloxane represented by the following Chemical Formula 1, and 1 to 10 parts by weight of a styrene-butadiene-acrylic acid copolymer , 0.01 to 5 parts by weight of zinc stearate, 0.01 to 5 parts by weight of sodium lauroylglutamate, 0.01 to 5 parts by weight of sodium carboxymethylcellulose, 0.01 to 5 parts by weight of hydroxypropylmethylcellulose, 1,3,5-tri (3 , 5-di-tert-butyl-4-hydroxybenzyl) isocyanate 0.01 to 5 parts by weight and 0.01 to 5 parts by weight of an antifoaming agent;

The inorganic filler is 100 parts by weight of calcium carbonate, 10 to 40 parts by weight of titanium dioxide, 10 to 40 parts by weight of glass beads, 1 to 10 parts by weight of halloysite, 1 to 10 parts by weight of zinc phosphate, 0.01 to 5 parts by weight of ammonium aluminum sulfate And it provides a high-visibility finishing composition for surface protection of concrete and steel structures comprising 0.01 to 5 parts by weight of a pigment.

[Formula 1]

In the above formula,

a is an integer from 10 to 300;

According to this high-visibility finishing composition for surface protection of concrete and steel structures according to an embodiment of the present invention, and a method for surface protection finishing construction of concrete and steel structures using the same, excellent strength, abrasion resistance, UV resistance, contamination resistance, salt damage resistance, neutralization resistance By implementing freeze-thaw resistance, weather resistance, waterproofness, and visibility, it is possible to provide an excellent surface protection effect to concrete and steel structures such as roads, curbs, protective walls, handrails, and guard rails. In addition, the construction is easy, and after construction, the curing time is short, so that the efficiency of the operation can be improved.

Accordingly, it is possible to increase the service period and reduce the cost of maintenance, and there is an effect that can prevent deterioration of physical properties such as surface abrasion, cracks, and slippage due to frictional force with automobile tires. In addition, due to its high penetrability, excellent visibility can be maintained in the long term even when surface abrasion occurs, and the high reflectivity to the light emitted from the car's headlight shows high visibility even at night or in rainy weather to prevent vehicle collision accidents. can ensure the safety of

First, the high-visibility finishing composition for surface protection of concrete and steel structures according to an embodiment of the present invention contains 10 to 80% by weight of an organic binder, 10 to 80% by weight of an inorganic filler, and 1 to 20% by weight of water.

The organic binder achieves excellent strength, UV resistance, stain resistance, salt decomposition resistance, neutralization resistance, freeze-thaw resistance, weather resistance, waterproofness and fast curing speed, thereby improving excellent crack resistance and durability, and greatly improving visibility. function. Accordingly, it is possible to provide an excellent surface protection effect to concrete and steel structures. In consideration of the above-described improvement effect, the organic binder is preferably contained in an amount of 10 to 80% by weight in the high-visibility finishing agent composition for surface protection of concrete and steel structures according to an embodiment of the present invention.

The organic binder is 100 parts by weight of an acrylic urethane resin, 20 to 40 parts by weight of polymethyl methacrylate, 1 to 10 parts by weight of methylhydrogenpolysiloxane represented by the following Chemical Formula 1, and 1 to 10 parts by weight of a styrene-butadiene-acrylic acid copolymer , 0.01 to 5 parts by weight of zinc stearate, 0.01 to 5 parts by weight of sodium lauroylglutamate, 0.01 to 5 parts by weight of sodium carboxymethylcellulose, 0.01 to 5 parts by weight of hydroxypropylmethylcellulose, 1,3,5-tri (3 ,5-Di-tert-butyl-4-hydroxybenzyl) isocyanate 0.01 to 5 parts by weight and 0.01 to 5 parts by weight of an antifoaming agent can be preferably used.

First, the acrylic urethane resin is excellent in elasticity and flexibility, and the coating film maintains appropriate elasticity and elongation in response to the behavior of concrete, so it can greatly improve strength, crack resistance and waterproofness, and acid resistance, alkali resistance, chemical resistance, salt resistance , neutralization resistance, freeze-thaw resistance and exhibits excellent physical properties.

Hereinafter, the content of other components constituting the organic binder is based on 100 parts by weight of the acrylic urethane resin.

The polymethyl methacrylate implements excellent strength, freeze-thaw resistance, waterproofness and fast curing speed, provides excellent elasticity and elongation, improves crack resistance and durability, and has excellent transparency to provide excellent visibility. function.

The above-described effect may be further improved by using a porous polymethyl methacrylate having an average particle diameter of 5 to 30 μm and an average pore size of 0.1 to 2 μm for the polymethyl methacrylate.

More specifically, the porous polymethyl methacrylate is prepared by mixing a polymethyl methacrylate (PMMA) polymer and a pluronic polymer in a weight ratio of 1: 0.1 to 1, and dissolving it in an organic solvent to prepare a mixed solution; preparing an emulsion by adding and emulsifying the mixed solution to an aqueous solution containing a surfactant; evaporating the organic solvent by heating the emulsion; and washing and drying the sunken porous polymethyl methacrylate (PMMA) particles after evaporating the organic solvent; The Pluronic polymer having a property of being well soluble in water is emulsified and moved to an aqueous phase, and a porous structure is formed in the polymethyl methacrylate particles according to this movement direction. Accordingly, there is an effect that can implement very excellent heat resistance, tensile strength, waterproof and water resistance.

At this time, the mixture of the polymethyl methacrylate (PMMA) polymer and the pluronic polymer may be dissolved in an organic solvent at a concentration in the range of 0.001 to 2 g/mL to prepare a mixed solution.

In addition, the organic solvent is generally used in the art and the type is not particularly limited, but for example, from the group consisting of methylene chloride, n-hexanone, methyl isopropyl ketone, isoamyl alcohol, and mixtures thereof. One or more selected types may be used. More preferably, methylene chloride, which is easily evaporated at a relatively low temperature of about 35 to 40°C, may be used.

In addition, the step of preparing an emulsion by inputting and emulsifying the mixed solution in an aqueous solution containing a surfactant; 0.5 to 5 parts by volume of the mixed solution, 100 parts by volume of the aqueous solution containing a surfactant, and 1,000 to 10,000 rpm It can be carried out by emulsifying by stirring at a speed of to prepare an emulsion. In addition, the aqueous solution containing the surfactant preferably contains a surfactant so as to have a concentration of 0.01 to 10% by weight.

In addition, the surfactant is generally used in the art and the type thereof is not particularly limited, but, for example, polyvinyl alcohol, polyacrylic acid, vinyl acetate copolymer, ethyl cellulose, hydroxypropyl cellulose, polyvinyl p One or more selected from the group consisting of rollidone, polyvinyl methyl ether, polyethyleneimine, and mixtures thereof may be used.

In addition, the porous polymethyl methacrylate can implement more excellent adhesion strength, crack resistance and high functionality by using a surface coated with polydopamine.

More specifically, the porous polymethyl methacrylate whose surface is coated with polydopamine is mixed with a polymethyl methacrylate (PMMA) polymer and a pluronic polymer in a ratio of 1: 0.1 to 1 by weight and dissolved in an organic solvent. preparing a mixed solution; preparing an emulsion by adding and emulsifying the mixed solution into an aqueous solution containing a dopamine solution and a surfactant represented by the following Chemical Formula 2; evaporating the organic solvent by heating the emulsion; and washing and drying the sunken porous polymethyl methacrylate (PMMA) particles after evaporating the organic solvent;

[Formula 2]

In the above formula,

R ₁ is hydrogen or an alkyl group having 1 to 4 carbon atoms,

x is an integer from 12 to 20;

n is an integer from 8 to 50;

At this time, it is preferable that the dopamine solution and the surfactant-containing aqueous solution contain the dopamine solution and the surfactant so as to have a concentration of 0.01 to 10% by weight, respectively, independently.

In addition, the dopamine solution is prepared by dissolving at least one selected from the group consisting of dopamine hydrochloride, norepinephrine hydrochloride, epinephrine hydrochloride, and mixtures thereof in a solvent. can In addition, the solvent may be at least one selected from the group consisting of a buffer solution, ethylene glycol, dimethyl sulfoxide, dimethyl formamide, and mixtures thereof. .

The polymethyl methacrylate is preferably contained in an amount of 20 to 40 parts by weight based on 100 parts by weight of the acrylic urethane resin. When the content of polymethyl methacrylate is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of polymethyl methacrylate is too large, material separation occurs or price competitiveness is lowered There are problems that could be.

The methylhydrogenpolysiloxane represented by Formula 1 has excellent adhesive strength, waterproofness, water repellency, heat resistance, chemical stability, abrasion resistance, UV resistance, stain resistance, salt decomposition resistance, neutralization resistance, freeze-thaw resistance, weather resistance and fast curing speed. , can provide homogeneous functionality of the coating film by greatly improving compatibility with inorganic fillers, maintain excellent visibility in the long term even when surface abrasion occurs due to high permeability, and maintain excellent visibility even in rainy weather with excellent water repellency function.

The methylhydrogenpolysiloxane represented by the above Chemical Formula 1 includes: a methylhydrogenpolysiloxane in which a is an integer of 10 to 90; The above effect can be further improved by using a mixture of methylhydrogenpolysiloxane, in which a is an integer of 150 to 220, in a weight ratio of 1: 0.1 to 0.5.

The methylhydrogenpolysiloxane represented by Formula 1 is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the acrylic urethane resin. When the content of the methylhydrogenpolysiloxane represented by the formula (1) is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the methylhydrogenpolysiloxane represented by the formula (1) is too large, price competitiveness is There is a problem that can be degraded.

The styrene-butadiene-acrylic acid copolymer functions to provide excellent adhesive strength, water resistance, weather resistance and durability.

The styrene-butadiene-acrylic acid copolymer is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the acrylic urethane resin. When the content of the styrene-butadiene-acrylic acid copolymer is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the styrene-butadiene-acrylic acid copolymer is too large, brittleness may occur, There is a problem in that price competitiveness may be lowered.

The zinc stearate functions to provide excellent waterproofness, water resistance, and abrasion resistance, and to greatly improve compatibility with inorganic fillers to provide uniform functionality of the coating film.

The zinc stearate is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic urethane resin. When the content of the zinc stearate is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the zinc stearate is too large, there is a problem that price competitiveness may be lowered.

The sodium lauroyl glutamate has a function of implementing excellent dispersibility and water resistance, and greatly improving the compatibility of the composition to provide homogeneous functionality of the coating film. In addition, excellent visibility can be maintained in the long term even when surface abrasion occurs due to its high permeability, and excellent water repellency functions to maintain excellent visibility even in rainy weather.

The sodium lauroyl glutamate is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic urethane resin. When the content of sodium lauroyl glutamate is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of sodium lauroyl glutamate is too large, the adhesive strength is lowered or the price competitiveness is lowered. There are possible problems.

The sodium carboxymethyl cellulose functions to provide excellent adhesive strength, dispersibility, chemical stability, material separation resistance and fast curing speed, and to greatly improve the compatibility of the composition to provide homogeneous functionality of the coating film. In addition, excellent visibility can be maintained in the long term even when surface abrasion occurs due to its high permeability, and excellent water repellency functions to maintain excellent visibility even in rainy weather.

The sodium carboxymethylcellulose is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic urethane resin. When the content of sodium carboxymethyl cellulose is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of sodium carboxymethyl cellulose is too large, durability may decrease or price competitiveness may decrease There is this.

The hydroxypropylmethyl cellulose provides excellent adhesive strength and leveling properties, and any of brush marks, roller marks, orange peel, cratering, pinholes, or color stains occurring on the surface It can prevent defects including one, prevent settling of the pigment, and function to improve workability during painting. In addition, it provides excellent elasticity and elongation, improves crack resistance and durability, and functions to provide excellent visibility due to excellent transparency.

The hydroxypropylmethylcellulose is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic urethane resin. If the content of the hydroxypropyl methyl cellulose is too small, there is a problem that the above-described improvement effect may be insufficient, and if the content of the hydroxypropyl methyl cellulose is too large, the durability may be reduced or the price competitiveness may be lowered. there is a problem with

The 1,3,5-tri(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanate implements excellent adhesive strength, dispersibility, chemical stability and material separation resistance, and improves the compatibility of the composition. It greatly improves and functions to provide uniform functionality of the coating film. In addition, excellent visibility can be maintained in the long term even when surface abrasion occurs due to its high permeability, and excellent water repellency functions to maintain excellent visibility even in rainy weather.

The 1,3,5-tri(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanate is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic urethane resin. . When the content of 1,3,5-tri (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanate is too small, there is a problem that the above improvement effect may be insufficient, When the content of 3,5-tri(3,5-di-tertiary-butyl-4-hydroxybenzyl)isocyanate is too large, there is a problem in that price competitiveness may be lowered.

The antifoaming agent functions to form an even coating film by suppressing air bubbles in the composition.

The antifoaming agent is a material generally well known in the art, and for example, an alcohol-based antifoaming agent, a silicone-based antifoaming agent, a fatty acid-based antifoaming agent, an oil-based antifoaming agent, an ester-based antifoaming agent, an oxyalkylene-based antifoaming agent, and the like may be used. More specifically, the alcohol-based antifoaming agent includes glycol, and the silicone-based antifoaming agent includes dimethyl silicone oil, polyorganosiloxane, fluorosilicone oil, and the like, and the fatty acid-based antifoaming agent includes stearic acid, oleic acid, and the like. have. In addition, the oil-based anti-foaming agent includes kerosene, animal and vegetable oil, castor oil, and the like, and the ester-based anti-foaming agent includes solitol trioleate, glycerol monoricinolate, and the like. In addition, the oxyalkylene-based antifoaming agent includes polyoxyalkylene, acetylene ether, polyoxyalkylene fatty acid ester, polyoxyalkylenealkylamine, and the like.

The antifoaming agent is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic urethane resin. If the content of the antifoaming agent is too small, there is a problem that the above-described improvement effect may be insufficient, and if the content of the antifoaming agent is too large, there is a problem that durability may be lowered or price competitiveness may be lowered.

On the other hand, the inorganic filler has excellent strength, abrasion resistance, salt decomposition resistance, neutralization resistance, freeze-thaw resistance, weather resistance, waterproofness and fast curing speed, thereby improving excellent crack resistance and durability, and greatly improving visibility. do. Accordingly, it is possible to provide an excellent surface protection effect to concrete and steel structures. In consideration of the above-described improvement effect, the inorganic filler is preferably contained in the high-visibility finishing agent composition for surface protection of concrete and steel structures according to an embodiment of the present invention in an amount of 10 to 80% by weight.

The inorganic filler is 100 parts by weight of calcium carbonate, 10 to 40 parts by weight of titanium dioxide, 10 to 40 parts by weight of glass beads, 1 to 10 parts by weight of halloysite, 1 to 10 parts by weight of zinc phosphate, 0.01 to 5 parts by weight of ammonium aluminum sulfate and 0.01 to 5 parts by weight of the pigment may be preferably used.

First, as an excellent filler, the calcium carbonate functions to greatly improve the excellent strength, abrasion resistance, durability and gloss control effect by controlling physical properties such as fluidity and viscosity of the composition.

Hereinafter, the content of other components constituting the inorganic filler is based on 100 parts by weight of the calcium carbonate.

The titanium dioxide functions to greatly improve the excellent strength, abrasion resistance, durability and gloss control effect. In addition, as a heat shielding and white pigment, it functions to further improve visibility by realizing an excellent heat shielding effect and hiding power.

The above-described effect can be further improved by using the titanium dioxide having an average particle diameter of 0.1 to 10 μm.

The titanium dioxide is preferably contained in an amount of 10 to 40 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the titanium dioxide is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the titanium dioxide is too large, there is a problem that the adhesion strength is lowered or the price competitiveness can be lowered.

The glass bead functions to greatly improve the excellent strength, abrasion resistance, durability, heat shielding and thermal insulation effects. In addition, due to its high reflectance, it has a function of realizing high visibility even at night or in rainy weather.

The glass beads have an average particle diameter of 50 to 100 μm; By using a refractive index of 1.80 or more, the above-described effect can be further improved.

The glass beads are preferably contained in an amount of 10 to 40 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the glass bead is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the glass bead is too large, there is a problem that the adhesion strength may be lowered or the price competitiveness may be lowered.

The halloysite functions to improve excellent strength, abrasion resistance, heat shielding and thermal insulation effects. In addition, it has a self-healing performance and functions to improve excellent crack resistance and durability.

The halloysite may preferably be a halloysite nanotube having an average length of 0.1 to 1 μm and an average diameter of an inner tunnel (lumen) of 10 to 150 nm.

Even more preferably, the halloysite is sulfonated on the surface by reacting the halloysite nanotubes having an average length of 0.1 to 1 μm and an average internal lumen diameter of 10 to 150 nm with a cyclic sulfonate ester. By using a single halloysite nanotube, it is possible to further improve the above-described effects, as well as to further improve the fast setting speed, excellent salt decomposition resistance, neutralization resistance, and freeze-thaw resistance.

The halloysite is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the halloysite is too small, the above-described improvement effect may be insufficient. When the content of the halloysite is too large, there is a problem that the adhesion strength may be lowered or the price competitiveness may be lowered.

The zinc phosphate has excellent strength, abrasion resistance and self-healing performance, and functions to improve excellent crack resistance and durability.

The zinc phosphate (Zn ₃ (PO ₄ ) ₂ ) is a plate-shaped zinc phosphate, which can further improve the above effects and provide excellent reflectivity, so that high visibility can be realized even at night or in rainy weather. functions can be further improved.

More specifically, the plate-shaped zinc phosphate is prepared by dissolving zinc hydroxide in water or hydrochloric acid diluted to a concentration of 15 to 30% by weight; preparing a precipitate of zinc carbonate while slowly adding an aqueous carbonate solution having a concentration of 15 to 30 wt% to the solution dropwise; preparing a plate-shaped zinc phosphate precipitate while slowly adding dropwise an aqueous phosphate solution having a concentration of 15 to 30 wt % to the solution containing the zinc carbonate precipitate; It is prepared by a manufacturing method comprising the steps of filtering, washing and drying the solution containing the plate-shaped zinc phosphate precipitate, and an average particle diameter of 0.1 to 3 μm may be preferably used.

In this case, the carbonate may preferably be at least one selected from the group consisting of sodium carbonate, sodium bicarbonate, ammonium carbonate, ammonium bicarbonate, and mixtures thereof; The phosphate salt may preferably be at least one selected from the group consisting of potassium phosphate, potassium monobasic, dipotassium phosphate, ammonium phosphate, monobasic ammonium phosphate, diammonium phosphate, and mixtures thereof.

The zinc phosphate is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the zinc phosphate is too small, the above improvement effect may be insufficient. When the content of the zinc phosphate is too large, there is a problem that the adhesion strength may be lowered or the price competitiveness may be lowered.

The ammonium aluminum sulfate functions to suppress shrinkage by cement, and to improve excellent material separation resistance, water resistance, crack resistance and durability.

The aluminum ammonium sulfate is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the aluminum ammonium sulfate is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the aluminum ammonium sulfate is too large, the adhesion strength is lowered or the price competitiveness may be lowered. have.

The pigment implements a color, improves aesthetics, and functions to improve visibility.

The pigment is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the pigment is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the pigment is too large, there is a problem that the adhesion strength may be lowered or the price competitiveness may be lowered.

On the other hand, the high visibility finishing composition for surface protection of concrete and steel structures according to a preferred embodiment of the present invention is a forced mixer by mixing 10 to 80% by weight of an organic binder, 10 to 80% by weight of an inorganic filler, and 1 to 20% by weight of water; It can be prepared by mixing with a continuous mixer or a vacuum mixer at a predetermined temperature (eg, room temperature to 60° C.) for a predetermined time (eg, 0.5 to 3 minutes).

In addition, another embodiment of the present invention is a surface protection finishing construction method of concrete and steel structures using the high-visibility finishing agent composition for surface protection of concrete and steel structures,

removing and cleaning impurities or deteriorated parts of concrete and steel structures; applying a surface reinforcing agent to the cleaned surfaces of the concrete and steel structures; applying a high-visibility finishing agent composition for surface protection of the concrete and steel structures to the surface of the applied surface reinforcing agent; applying a durability-improving coating agent to the surface of the applied high-visibility finishing composition for surface protection of concrete and steel structures; And it provides a surface protection finishing construction method of concrete and steel structures comprising the step of curing.

The step of removing and cleaning the impurities or deteriorated parts of the concrete and steel structures; removes the impurities or deteriorated parts of the concrete and steel structures with a grinder, planer, shot blaster, hand waterjet, high-pressure sprinkler, etc., and cleans with a vacuum suction machine, etc. can

In addition, when cracks, grooves, pinholes, etc. exist in the cleaned area, the method may further include cleaning the base surface using a fast-hardening putty material in the cleaned areas such as cracks, grooves, and pinholes. The cleaned cracks, grooves, pinholes, etc. can be cleaned using a fast-hardening putty material. In this case, the fast-setting putty material may include at least one selected from the group consisting of epoxy putty, urethane putty, super-fast cement-based putty, and mixtures thereof.

In addition, the surface reinforcing agent improves the adhesion between the spheres of concrete and steel structures and the high-visibility finishing composition for surface protection of the concrete and steel structures, inhibits water penetration and chloride ion penetration, and improves water resistance and waterproofness. The surface strengthening agent is selected from the group consisting of styrene-butadiene latex, polyacrylic ester, acrylic, ethyl vinyl acetate, methyl methacrylate, an organic binder of the high-visibility finishing composition for surface protection of concrete and steel structures, and mixtures thereof. Those containing more than one species can be preferably used.

In addition, the step of applying the high-visibility finishing composition for surface protection of concrete and steel structures to the surface of the applied surface reinforcing agent; may be performed using a brush, roller, airless, spraying equipment, and the like.

In this case, after applying the high-visibility finishing composition for surface protection of concrete and steel structures, the step of spraying glass beads may be further included. Accordingly, there is an effect of further improving excellent reflectivity and visibility. In this case, the glass bead is generally used in the art and the type thereof is not particularly limited, but it is more preferable to use the "glass bead" described in the high-visibility finishing composition for surface protection of concrete and steel structures.

In addition, the durability improvement coating agent functions to improve corrosion resistance, UV resistance, ozone resistance, salt damage resistance, neutralization resistance, surface hardness improvement, and water resistance. The durability-improving coating agent may preferably include at least one selected from the group consisting of acrylic-urethane, silane-based penetration enhancer, organic binder of the high-visibility finishing composition for surface protection of concrete and steel structures, and mixtures thereof. have.

According to the high-visibility finishing agent composition for surface protection of concrete and steel structures according to an embodiment of the present invention, and the surface protection finishing construction method of concrete and steel structures using the same, excellent strength, abrasion resistance, UV resistance, contamination resistance, salt damage resistance, neutralization resistance, By implementing freeze-thaw resistance, weather resistance, waterproofness, and visibility, it is possible to provide an excellent surface protection effect to concrete and steel structures such as roads, curbs, protective walls, handrails, and guard rails. In addition, the construction is easy, and after construction, the curing time is short, so that the efficiency of the operation can be improved.

Accordingly, it is possible to increase the service period and reduce the cost of maintenance, and there is an effect that can prevent deterioration of physical properties such as surface abrasion, cracks, and slippage due to frictional force with automobile tires. In addition, due to its high penetrability, excellent visibility can be maintained in the long term even when surface abrasion occurs, and the high reflectivity to the light emitted from the car's headlight shows high visibility even at night or in rainy weather to prevent vehicle collision accidents. can ensure the safety of

As mentioned above, although preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention. This is possible.

<Production Example 1>

Preparation of porous polymethyl methacrylate

An aqueous solution of polyvinyl alcohol (Polyvinyl alcohol, PVA, 88% hydrolyzed, molecular weight 146,000 to 186,000) surfactant having a concentration of 0.5 wt% was prepared.

Then, poly methyl methacrylate (PMMA, molecular weight 50,000) and pluronic (Pluronic F-127) were mixed in a 1: 1 weight ratio, and then methylene chloride (MC) was mixed thereto. , A mixed solution having a concentration of the polymethyl methacrylate (PMMA) polymer and the Pluronic polymer mixture of 0.7 g/mL was prepared. Then, after closing the lid of the container containing the mixed solution, it was completely sealed with Teflon tape and completely dissolved with stirring. 1.8 parts by volume of the mixed solution was added to 100 parts by volume of a previously prepared surfactant aqueous solution, and emulsified for 10 minutes at a speed of 5000 rpm using a homogenizer (high-speed stirrer). The emulsion was placed in a beaker or crystallizing dish, transferred directly to a fume hood, and stirred at 300 rpm or higher for 3 hours at 37° C. to evaporate the organic solvent. After the emulsion was precipitated by centrifugation, the supernatant was removed and washed several times. The washed porous microspheres were completely dehydrated through freeze-drying.

<Preparation Example 2>

Porous polymethylmethacrylate whose surface is coated with polydopamine

Polyvinyl alcohol (PVA, 88% hydrolyzed, molecular weight 146,000 to 186,000) surfactant at a concentration of 0.2 wt%, a surfactant represented by the following Chemical Formula 2-1 at a concentration of 0.3 wt%, and a dopamine solution at a concentration of 3 wt% An aqueous solution containing At this time, as the dopamine solution, 200 g of dopamine hydrochloride and a tris buffer solution (Tris-buffer, trizma base) were dissolved in water and dissolved in 100 L of a solvent prepared to a concentration of 10 M was used.

Then, poly methyl methacrylate (PMMA, molecular weight 50,000) and pluronic (Pluronic F-127) were mixed in a 1: 1 weight ratio, and then methylene chloride (MC) was mixed thereto. , A mixed solution having a concentration of 0.7 g/mL of a mixture of the polymethyl methacrylate (PMMA) polymer and pluronic polymer was prepared. Then, after closing the lid of the container containing the mixed solution, it was completely sealed with Teflon tape and completely dissolved with stirring. 1.2 parts by volume of the mixed solution was added to 100 parts by volume of the previously prepared aqueous solution, and emulsified for 10 minutes at a speed of 8000 rpm using a homogenizer (high-speed stirrer). The emulsion was placed in a beaker or crystallizing dish, transferred directly to a fume hood, and stirred at 300 rpm or higher for 3 hours at 37° C. to evaporate the organic solvent. After the emulsion was precipitated by centrifugation, the supernatant was removed and washed several times. The washed porous microspheres were completely dehydrated through freeze-drying.

[Formula 2-1]

In the above formula,

R ₁ is a methyl group, x is 17, and n is 32.

<Production Example 3>

Preparation of surface-sulfonated halloysite nanotubes

To anhydrous toluene, 200 mg/L of halloysite nanotubes having an average length of about 0.55 μm and an average internal lumen diameter of about 105 nm and 1,3-propane sultone at a concentration of 2.5 mol/L were added to anhydrous toluene. , followed by sonication for 1 hour, followed by stirring under reflux (120 °C, 72 hours). Subsequently, after filtration, the surface was washed with distilled water and dried to prepare a sulfonated halloysite nanotube.

<Production Example 4>

Manufacture of plate-shaped zinc phosphate

Zinc hydroxide is mixed with water or hydrochloric acid diluted to a concentration of 20% by weight, heated and dissolved on a hot plate, cooled, and then an aqueous solution of sodium carbonate having a concentration of 20% by weight is slowly added dropwise to the dissolved solution. A precipitate was prepared. While the solution containing the zinc carbonate precipitate was stirred at 500 rpm, an aqueous solution of sodium phosphate monobasic (NaH ₂ PO ₄ ) having a concentration of 20 wt% was slowly added dropwise to prepare a plate-shaped zinc phosphate precipitate. Thereafter, the solution containing the plate-shaped zinc phosphate precipitate was filtered and washed three times, and then heated and dried in an oven at 100° C. to prepare a plate-shaped zinc phosphate powder having an average particle diameter of 0.51 μm.

<Examples and Comparative Examples>

The organic binder, inorganic filler and water mixed in the components and contents as shown in Table 1 below were put into a forced mixing mixer, and then mixed for 3 minutes to prepare a high-visibility finishing agent composition for surface protection of concrete and steel structures and a composition for comparison did

Category (wt%) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 water 5 5 5 5 5 organic binder 47 47 47 47 47 (parts by weight) Acrylic urethane resin 100 100 100 100 100 polymethyl methacrylate 38 ⁽¹⁾ 38
[Production Example 1] 38
[Production Example 2] - 38 ⁽¹⁾ Methylhydrogenpolysiloxane
[Formula 1-1] - 3 5 - - Methylhydrogenpolysiloxane
[Formula 1-2] 5 3 2 - - Styrene-butadiene-acrylic acid copolymer 8 8 8 - 8 Zinc Stearate 2 2 2 - 2 Sodium Lauroyl Glutamate 2 2 2 - - Carboxymethylcellulose sodium 1.5 1.5 1.5 - - Hydroxypropylmethylcellulose 1.5 1.5 1.5 1.5 1.5 1,3,5-Tri(3,5-di-tertiary-butyl-4-hydroxybenzyl)isocyanate 2.5 2.5 2.5 - - antifoam
[Dimethyl silicone oil] 0.5 0.5 0.5 0.5 0.5

상기 식에서, a는 23이다.

[화학식1-2]

상기 식에서, a는 195이다. ⁽¹⁾ General polymethyl methacrylate (Poly methyl methacrylate, PMMA, molecular weight 50,000) polymer

[Formula 1-1]

In the above formula, a is 23.

[Formula 1-2]

In the above formula, a is 195. inorganic filler 48 48 48 48 48 (parts by weight) calcium carbonate 100 100 100 100 100 Titanium Dioxide ⁽²⁾ 25 25 25 - 25 Glass Bead ⁽³⁾ 17 17 17 17 17 Holloy Site 8 ⁽⁴⁾ 8 ⁽⁴⁾ 8
[Production Example 3] - - zinc phosphate 6
[normal
zinc phosphate
powder] 6
[Production Example 4] 6
[Production Example 4] - - Ammonium Aluminum Sulfate 1.5 1.5 1.5 - - pigment 2.5 2.5 2.5 2.5 2.5 ⁽²⁾ Titanium dioxide: The one with an average particle diameter of about 7.2 μm is used.
⁽³⁾ Glass beads: those having an average particle diameter of about 87 μm; Use a refractive index of 1.80 or higher.
⁽⁴⁾ Halloysite: A halloysite nanotube having an average length of about 0.55 μm and an average diameter of an inner tunnel (lumen) of about 105 nm is used.

The following test examples are experiments comparing the properties of Examples 1 and 2 according to the present invention with those of Comparative Examples 1 and 2 in order to more easily understand the characteristics of Examples 1 to 3 according to the present invention disclosed above. the results are shown.

<Test Example 1>

The high-visibility finishing agent composition for surface protection of concrete and steel structures prepared according to Examples 1 to 3 and the composition for comparison prepared according to Comparative Examples 1 and 2 were applied to the general cement concrete surface to prepare a test body for evaluating physical properties.

For the test body for evaluation of physical properties prepared above, in accordance with KS M 6080, lead, non-adhesive drying properties, coating film appearance, 45° and 0° diffuse reflectance, hiding rate (%), bleeding resistance, abrasion resistance, accelerated weather resistance, water resistance and An alkali resistance test was performed, and the results are shown in Table 2 below.

At this time, one quality standard for KS M 6080 is as follows. The consistency is 80~130 KU, and the state in the container should be free from hard lumps or foreign substances in the contents, and it should be easily uniform when stirred. Non-stick dryness means that the paint should not stick to the tire of the non-stick tester after 20 minutes. The appearance of the coating film should be free from wrinkles, stains, swelling, cracks, and peeling. The 45° and 0° diffuse reflectance (%) should be at least 80%. In the concealment ratio, white should be at least 90%. Luminance ratio is the luminance before and after ultraviolet (UV) aging, and white should be 0.8β or more before aging and 0.05ㅿβ or less after aging. Bleedability: When painted on asphalt, there should be no severe bleeding. Abrasion resistance should be less than 500 mg. For water resistance, there should be no cracks, swelling, wrinkles, discoloration, etc. when immersed in water for 24 hours. For alkali resistance, there should be no cracking or discoloration even after being immersed in a saturated solution of calcium hydroxide for 18 hours.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 led (KU) 95 95 97 81 92 state in courage clear clear clear hard lumps clear non-adhesive dryness don't ask don't ask don't ask don't ask don't ask film appearance no change no change no change no change no change 45° and 0° diffuse reflectance (%) 90 91 93 75 85 Concealment (%) White 92 94 96 78 88 luminance rate Before UV aging (β) 0.86 0.87 0.89 0.74 0.80 After UV aging (Δβ) 0.04 0.02 0.01 0.09 0.05 bleeding property none none none none none wear resistance 11 9 9 94 38 water resistance no change no change no change no change no change alkali resistance no change no change no change discoloration no change

As can be seen in Table 2, the high-visibility finishing agent compositions for surface protection of concrete and steel structures prepared according to Examples 1 to 3 showed excellent performance compared to the comparative compositions prepared according to Comparative Examples 1 and 2 could confirm that

<Test Example 2>

The high-visibility finishing agent composition for surface protection of concrete and steel structures prepared according to Examples 1 to 3 and the composition for comparison prepared according to Comparative Examples 1 and 2 were applied to the general cement concrete surface to prepare a test body for evaluation of physical properties.

For the test specimen for evaluation of physical properties prepared above, adhesion strength (KS F 4937), neutralization depth (KS F 4936), chloride ion penetration resistance test (KS F 4936), acid resistance (immersion in 5% sulfuric acid aqueous solution to measure the weight change rate) ), accelerated weathering test (KS F 2274, KS A 0063) and crack responsiveness (KS F 4937) were evaluated, and the results are shown in Table 3 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Adhesive strength (N/㎟) 1.78 1.82 1.85 0.59 1.21 Neutralization depth (mm) 0.3 0.3 0.2 1.2 0.8 Chloride ion penetration resistance (Coulombs) 684 625 607 1587 1325 Acid resistance, weight change (%) 0.05 0.04 0.02 0.33 0.18 Color difference (E*) after accelerated weathering test (WS, 500 hours) Black color 0.6 0.4 0.3 1.9 1.2 ocher 0.4 0.3 0.1 1.6 1.0 crack resistance Good Good Good error Good

As can be seen in Table 3, the high-visibility finishing agent compositions for surface protection of concrete and steel structures prepared according to Examples 1 to 3 showed excellent performance compared to the comparative compositions prepared according to Comparative Examples 1 and 2 could confirm that

As described above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that all of the embodiments described above are illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention, rather than the above detailed description, all changes or modifications derived from the meaning and scope of the claims to be described later and their equivalents.

Claims (6)

A high-visibility finishing composition for surface protection of concrete and steel structures comprising 10 to 80% by weight of an organic binder, 10 to 80% by weight of an inorganic filler, and 1 to 20% by weight of water;
The organic binder is 100 parts by weight of an acrylic urethane resin, 20 to 40 parts by weight of polymethyl methacrylate, 1 to 10 parts by weight of methylhydrogenpolysiloxane represented by the following Chemical Formula 1, and 1 to 10 parts by weight of a styrene-butadiene-acrylic acid copolymer , 0.01 to 5 parts by weight of zinc stearate, 0.01 to 5 parts by weight of sodium lauroylglutamate, 0.01 to 5 parts by weight of sodium carboxymethylcellulose, 0.01 to 5 parts by weight of hydroxypropylmethylcellulose, 1,3,5-tri (3 , 5-di-tert-butyl-4-hydroxybenzyl) isocyanate 0.01 to 5 parts by weight and 0.01 to 5 parts by weight of an antifoaming agent;
The inorganic filler is 100 parts by weight of calcium carbonate, 10 to 40 parts by weight of titanium dioxide, 10 to 40 parts by weight of glass beads, 1 to 10 parts by weight of halloysite, 1 to 10 parts by weight of zinc phosphate, 0.01 to 5 parts by weight of ammonium aluminum sulfate and 0.01 to 5 parts by weight of a pigment. A high-visibility finishing composition for surface protection of concrete and steel structures.
[Formula 1]

In the above formula,
a is an integer from 10 to 300;
According to claim 1,
The polymethyl methacrylate is a porous polymethyl methacrylate having an average particle diameter of 5 to 30 μm and an average pore size of 0.1 to 2 μm;
The porous polymethyl methacrylate is prepared by mixing a polymethyl methacrylate (PMMA) polymer and a pluronic polymer in a weight ratio of 1: 0.1 to 1 and dissolving it in an organic solvent to prepare a mixed solution; preparing an emulsion by introducing and emulsifying the mixed solution into an aqueous solution containing a surfactant; evaporating the organic solvent by heating the emulsion; And after evaporating the organic solvent, washing and drying the sunken porous polymethyl methacrylate (PMMA) particles; High visibility finishing agent composition for surface protection of concrete and steel structures, characterized in that it is prepared by a manufacturing method including a .
3. The method of claim 2,
The porous polymethylmethacrylate has a surface coated with polydopamine;
The surface of the porous polymethyl methacrylate coated with polydopamine is mixed with a polymethyl methacrylate (PMMA) polymer and a pluronic polymer in a 1: 0.1 to 1 weight ratio, and dissolved in an organic solvent to prepare a mixed solution to do; preparing an emulsion by introducing and emulsifying the mixed solution into an aqueous solution containing a dopamine solution and a surfactant represented by the following Chemical Formula 2; evaporating the organic solvent by heating the emulsion; And after evaporating the organic solvent, washing and drying the sunken porous polymethyl methacrylate (PMMA) particles; High visibility finishing agent composition for surface protection of concrete and steel structures, characterized in that it is prepared by a manufacturing method including a .
[Formula 2]

In the above formula,
R ₁ is hydrogen or an alkyl group having 1 to 4 carbon atoms,
x is an integer from 12 to 20;
n is an integer from 8 to 50;
According to claim 1,
The zinc phosphate (Zn ₃ (PO ₄ ) ₂ ) is a plate-shaped zinc phosphate;
The plate-shaped zinc phosphate is prepared by dissolving zinc hydroxide in water or hydrochloric acid diluted to a concentration of 15 to 30% by weight; preparing a precipitate of zinc carbonate while slowly adding an aqueous carbonate solution having a concentration of 15 to 30 wt% to the solution dropwise; preparing a plate-shaped zinc phosphate precipitate while slowly adding dropwise an aqueous phosphate solution having a concentration of 15 to 30 wt % to the solution containing the zinc carbonate precipitate; High visibility finishing composition for surface protection of concrete and steel structures, characterized in that it is prepared by a manufacturing method comprising the steps of filtering, washing and drying the solution containing the plate-shaped zinc phosphate precipitate.
A method for surface protection finishing construction of concrete and steel structures using the high-visibility finishing agent composition for surface protection of concrete and steel structures according to any one of claims 1 to 4,
removing and cleaning impurities or deteriorated parts of concrete and steel structures; applying a surface reinforcing agent to the cleaned surfaces of the concrete and steel structures; applying a high-visibility finishing agent composition for surface protection of the concrete and steel structures to the surface of the applied surface reinforcing agent; applying a durability-improving coating agent to the surface of the applied high-visibility finishing composition for surface protection of concrete and steel structures; and a curing step.
6. The method of claim 5,
The surface strengthening agent is one selected from the group consisting of styrene-butadiene latex, polyacrylic ester, acrylic, ethyl vinyl acetate, methyl methacrylate, an organic binder of the high visibility finishing composition for surface protection of concrete and steel structures, and mixtures thereof includes the above;
The durability improving coating agent comprises at least one selected from the group consisting of acryl-urethane, silane-based penetration enhancer, organic binder of the high-visibility finishing composition for surface protection of concrete and steel structures, and mixtures thereof Concrete and A method of surface protection finishing construction of steel structures.