KR102266885B1 - Construction method of wet concrete pigment - Google Patents

Abstract

The present invention is to provide a method for constructing a wet concrete pigment that is integrally free from defects, can be used semi-permanently, can be used semi-permanently, can reduce construction costs, and can display various colors and patterns. Specifically, (a) subgrade compaction layer a subgrade ground compaction step for forming this; (b) sub-base pouring and compaction step for forming a sub-base layer on the sub-substrate compaction layer; (c) a separation membrane installation step to have a separation membrane on the auxiliary base layer; (d) a colored concrete pavement step of allowing the colored concrete layer to be formed on the separation membrane (e) a curing and joint cutting step of allowing the colored concrete layer to be cured and cut using a joint, and the color of (d) The concrete paving step includes: water in a weight of 150 to 180 kgf per 1 m of concrete; cement weighing 260 to 350 kgf; fine aggregate weighing 800 to 1000 kgf; Coarse aggregate weighing 850 to 1000 kgf; With respect to 100 parts by weight of the cement composition containing an admixture of 1 to 5Kgf weight, a wet concrete pigment composition mixed in an amount of 0.3 to 5 parts by weight of a pigment pigment is poured into the separation membrane, and the surface can be finished immediately before hardening. The present invention relates to a concrete pigment construction method, and an object of the present invention is to provide a wet concrete pigment construction method that can express various colors and realize various colors that are eco-friendly and at the same time preserve aesthetics.

Description

Wet concrete pigment construction method {Construction method of wet concrete pigment}

The present invention relates to an improved wet concrete pigment construction method so that colored concrete pavement can be constructed in various colors using pigments pigments, which are pigments of eco-friendly materials, and to cement concrete with pigment pigments. It is intended to provide a wet concrete pigment construction method that expresses various colors using the

Another object of the present invention is to provide a wet concrete pigment construction method that can implement various colors that are eco-friendly by using pigments.

Concrete structures lose their original function over time due to chemical erosion caused by salt damage, neutralization, melting agent, etc., freezing, alkali aggregate reaction, discoloration due to vehicle fumes, fatigue, etc., and their properties deteriorate.

In addition, among concrete structures, piers, median strips, passage culverts, and hydraulic facility structures have an effect on cracks or structures due to carbonation, that is, neutralization or freezing damage, and as this elapses for a long time, the compressive strength and tensile strength decrease, and cracks are prevented. Corrosion of the reinforcing bar occurs. In such a case, the collapse of the structure may occur in severe cases.

On the other hand, if the life of the structure is long in the long term, the effect of carbon dioxide in the air and acid rain, peeling phenomenon, cracking, rusting of rebar, chemical corrosion by snowmelting agent, sulfurous acid in the exhaust gas of automobiles such as tunnels and underpasses, etc. By accelerating the neutralization of this structure, discoloration of the concrete occurs, which lowers the durability of the structure, which in turn increases the maintenance cost.

In particular, carbonation (neutralization) of roads and related structures such as bridges and tunnels is a serious condition.

When repairing a structure whose surface has been neutralized due to a long lifespan and a neutralized surface due to the treatment of a sewage treatment plant with frequent inflow and outflow of water, repair cement due to air pockets, peeling of the attachment interface, exfoliation, etc. due to the groundwater pressure on the back of the structure There are cases where construction with mortar is impossible.

In order to solve this problem, since it is not necessary to use a coating agent by giving a color to the mortar, this problem in construction can be solved.

Deterioration of the surface of the concrete member occurs due to contact with rainwater and outside air.

Therefore, it should be constructed using a method to prevent deterioration by protecting the concrete member that blocks the surface of the member from outside air.

According to this basic principle, in the past, a protective material is applied to the concrete surface to have a certain thickness to act as a plastering material, a coating film is thinly coated on the concrete surface with a water repellent or waterproofing agent, and a ready-made material is applied to the surface. There are 3 methods of blocking the attachment.

In the case of the coating film blocking method, the durability is weak and there is no ability to adjust the external defects on the surface of the concrete because it is a thin film with almost no thickness.

Although there are disadvantages of poor waterproofness and durability, the coating blocking method has the advantage of having a surface adjustment effect.

However, in the case of adhesion blocking, it has good durability and perfectly hides surface defects, but it is expensive, so it cannot be used for civil structures and is used only for renovation of high-end buildings.

On the other hand, in the case of the registered patent described in the patent document of the prior art literature, there is a problem in that it causes damage to the human body due to dust, etc., since a certain amount of glass fiber (geotextile) must be used when mixing iron oxide pigment and cement concrete, and also, glass fiber has a disadvantage in that it does not mix well with cement because it has a low water absorption rate, and cracks occur due to initial drying and shrinkage after concrete pouring depending on the water-cement ratio, resulting in poor durability.

In addition, in winter, when snow removal agents are used and dry winds occur a lot, glass fiber dust is more severe, and when a material with high salinity is continuously in contact with the road surface, it is accompanied by a problem of deterioration in durability due to discoloration and salinity. .

Korean Patent No. 10-1924887 (2018.11.28.) Korean Patent Registration No. 10-0518712 (Sep. 26, 2005) Korea Patent Publication No. 10-2003-0055220 (2003.07.02) Korean Patent Registration No. 10-16600023 (2016.09.20.) Korean Patent Registration No. 10-0902937 (June 15, 2009)

The present invention has been devised to solve the conventional problems as described above, and the present invention is integrally free from defects, can be used semi-permanently, can be used semi-permanently, can reduce construction costs, and can display various colors and patterns. An object of the present invention is to provide a method of construction.

Another object of the present invention is to provide a wet concrete pigment construction method that uses pigments pigments in cement concrete to express various colors to save aesthetics.

Another object of the present invention is to provide a wet concrete pigment construction method that can implement various colors that are eco-friendly by using pigments (pigments).

The present invention for achieving the above object,

A wet concrete pigment construction method, comprising: (a) a subgrade compaction step of forming a subgrade compaction layer; (b) sub-base pouring and compaction step for forming a sub-base layer on the sub-substrate compaction layer; (c) a separation membrane installation step to have a separation membrane on the auxiliary base layer; (d) a colored concrete paving step for forming a colored concrete layer on the separation membrane; (e) allowing the colored concrete layer to cure, and includes a curing and joint cutting step of cutting using a joint, wherein the colored concrete paving step of (d) is per 1 m of concrete, 150 to 180 kgf of water; cement weighing 260 to 350 kgf; fine aggregate weighing 800 to 1000 kgf; Coarse aggregate weighing 850 to 1000 kgf; With respect to 100 parts by weight of the cement composition containing an admixture in a weight of 1 to 5 kgf, a wet concrete pigment composition mixed in an amount of 0.3 to 5 parts by weight of a pigment pigment is poured into the separator, and the surface is finished immediately before hardening, , The admixture is a polycarbonate-based water reducing agent 0.3 to 15 parts by weight, bentonites 0.1 to 10 parts by weight, polyvinyl alcohol 0.03 to 10 parts by weight, butyl acrylate-styrene 0.1 to 15 parts by weight, polyisobutyrene 0.1 to 15 Part by weight, 0.01 to 10 parts by weight of sodium polyacrylate, 0.01 to 0.2 parts by weight of sugar, 0.1 to 5 parts by weight of isobutyl oleate, 0.1 to 5 parts by weight of an emulsifier, 0.1 to 5 parts by weight of an air entraining agent; do it with

Here, it may further include a strength maintaining member between the steps (c) and (d), wherein the strength maintaining member is characterized in that it consists of a metal wire mesh or a resin network.

In addition, the emulsifier is selected from the group consisting of glycerin fatty acid ester, polyglycerol fatty acid ester, ethoxylated sorbitan fatty acid ester, and ethoxylated alkylamine, and the air entraining agent is sodium lauryl ether sulfate or It is characterized in that at least one type is selected from the group consisting of vinzoresin.

In addition, the admixture further includes an additive, and the additive is characterized in that it further contains at least one selected from an antifoaming agent, a dispersing agent, a UV blocker, a viscosity modifier, an antioxidant, and a rust preventive agent.

And, it further comprises a step (f) of forming a pattern after the step (e), wherein the pattern is characterized in that any one of a stamp, a stencil, a Dynatex mat, and a mechanical plastering.

In addition, after step (f), it is characterized in that it is applied using a surface reinforcing agent and dried.

On the other hand, the wet concrete pigment composition of the present invention,

150 to 180 kgf of water per cubic meter of concrete; cement weighing 260 to 350 kgf; fine aggregate weighing 800 to 1000 kgf; Coarse aggregate weighing 850 to 1000 kgf; In the wet concrete pigment composition mixed in an amount of 0.3 to 5 parts by weight of a pigment pigment based on 100 parts by weight of the cement composition containing an admixture of 1 to 5Kgf weight, the admixture is 0.3 to 15 parts by weight of a polycarbonate-based water reducing agent , Bentonites 0.1 to 10 parts by weight, polyvinyl alcohol 0.03 to 10 parts by weight, butyl acrylate-styrene 0.1 to 15 parts by weight, polyisobutyne 0.1 to 15 parts by weight, sodium polyacrylate 0.01 to 10 parts by weight, sugar 0.01 to 0.2 parts by weight, 0.1 to 5 parts by weight of isobutyl oleate, 0.1 to 5 parts by weight of an emulsifier, and 0.1 to 5 parts by weight of an air entraining agent.

The wet concrete pigment construction method of the present invention is an integral mixture of the concrete composition and the pigment, which is free from defects, can be used semi-permanently, can be used semi-permanently, can reduce construction costs, can be displayed in various colors and patterns, and can produce various colors. It has the effect of improving the aesthetic feeling.

Moreover, the thickness of the construction site can be controlled through the integrated wet concrete pigment construction method of the present invention, and it is possible from a thin thickness to a thick thickness, thereby shortening the construction time and obtaining a uniform and smooth surface. have an effect

The present invention has the effect of greatly increasing the service life of the road as well as increasing durability because the metal wire mesh made of wire is inserted therein to maintain better strength.

The wet concrete pigment construction method according to the present invention can control various colors such as nature-friendly ocher or green color, can be constructed in the color requested by the customer, and has high durability and durability due to high material strength, It has a strong water-resistance effect.

Hereinafter, the wet concrete pigment construction method of the present invention will be described in detail.

The wet concrete pigment construction method of the present invention comprises: (a) a subgrade compaction step of forming a subgrade compaction layer; (b) sub-base pouring and compaction step for forming a sub-base layer on the sub-substrate compaction layer; (c) a separation membrane installation step to have a separation membrane on the auxiliary base layer; (d) a colored concrete paving step for forming a colored concrete layer on the separation membrane (e) a curing and joint cutting step for allowing the colored concrete layer to be cured and cut using a joint; Color concrete paving step is water per 1㎥ of concrete, 150 to 180kgf weight of water; cement weighing 260 to 350 kgf; fine aggregate weighing 800 to 1000 kgf; Coarse aggregate weighing 850 to 1000 kgf; With respect to 100 parts by weight of the cement composition containing an admixture of 1 to 5 kgf by weight, a wet concrete pigment composition mixed in an amount of 0.3 to 5 parts by weight of a pigment pigment is poured into the separator, and the surface can be finished immediately before hardening.

The wet concrete pigment composition is made by mixing a pigment pigment, which is a color pigment, with a raw material containing cement, water, fine aggregate, coarse aggregate, and an admixture.

The cement included in the wet concrete pigment composition according to the present invention is not particularly limited as long as it is a cement commonly used in the art, but is preferably a special cement such as general Portland cement or blast furnace slag cement, ultra-fine powder cement, and super-velocity cement. etc. can be used.

According to the size of the aggregate included in the wet concrete pigment composition according to the present invention, 0.074 mm or more and less than 4.76 mm are called fine aggregates, and those of 4.76 mm or more are called coarse aggregates.

The preferred amount of aggregate used is 800 to 1000 kgf of fine aggregate per 1 m of concrete; It is preferable to include a coarse aggregate weighing 850 to 1000 kgf.

In addition, it is preferable to mix 150 to 180 kgf of water by weight, but the water-cement ratio is 42.8 to 69.2%.

The reason for this is that when the water-cement ratio is less than 42.8%, it is difficult to form the mix, and on the contrary, when the water-cement ratio is 69.2% or more, material separation occurs, which adversely affects the properties of the coating film.

The admixture is 0.3 to 15 parts by weight of a polycarbonate-based water reducing agent, 0.1 to 10 parts by weight of bentonites, 0.03 to 10 parts by weight of polyvinyl alcohol, 0.1 to 15 parts by weight of butyl acrylate-styrene based on 100 parts by weight of the admixture composition. 0.1 to 15 parts by weight of isobutyrene, 0.01 to 10 parts by weight of sodium polyacrylate, 0.01 to 0.2 parts by weight of sugar, 0.1 to 5 parts by weight of isobutyl oleate, 0.1 to 5 parts by weight of an emulsifier, 0.1 to 5 parts by weight of an air entraining agent and the remainder of water.

The water-reducing agent used in the present invention uses an AE water-reducing agent of polycarboxylic acid salt (polycarboxylic acid-based). As known water reducing agents, AE water reducing agents of naphthalene sulfonic acid formaldehyde condensate salt (naphthalene-based), melamine sulfonic acid formaldehyde condensate salt (melamine-based), and polycarboxylic acid salt (polycarboxylic acid-based) are used, but among them, naphthalene-based water reducing agents are used. And melamine-based water reducing agent is not easy to control the water sensitivity, so even if the amount used is increased, it is not possible to obtain the effect of increasing the water sensitivity more than a certain value, but also reduces the dispersibility of cement particles, hardening properties of cement, and strength of concrete after hardening has a serious impact on

Therefore, the water reducing agent of the present invention is preferably a polycarbonate-based water-reducing agent having excellent water-reducing ability even with a small amount of addition, and it is preferable to use it in 0.3 to 15 parts by weight of the polycarbonate-based water-reducing agent with respect to the admixture, The reason is that when it is less than 0.3 parts by weight, the dispersibility of the particles is reduced, and when it exceeds 15 parts by weight, economic efficiency is deteriorated and the concrete strength is adversely affected after hardening.

Bentonites used in the present invention are preferably one or more selected from the group consisting of bentonite, acid clay, and activated clay, and when using a polycarboxylic acid salt water reducing agent, it inhibits material separation of bentonite concrete and , has the advantage of imparting plasticity.

In addition, it is preferable to use 0.1 to 10 parts by weight of bentonites with respect to the admixture, for this reason, when less than 0.1 parts by weight, material separation of the polycarboxylic acid water reducing agent is reduced even by using bentonites with strong water retention properties. The effect is small, and, conversely, when it exceeds 10 parts by weight, not only economic efficiency is deteriorated, but also the unit quantity increases, which causes an undesirable adverse effect in strength.

Polyvinyl alcohol (hereinafter referred to as 'PVA') used in the present invention, when bentonites and a polycarboxylic acid water reducing agent are used in combination, prevents sudden slump drop of concrete during kneading and mixing, and slump loss thereafter. has the effect of preventing

In this invention, 2,000 or less are preferable and, as for the average degree of polymerization of PVA, it is so more preferable that it is small.

When the average degree of polymerization of PVA exceeds 2,000, the slump loss prevention effect may become small.

The blending amount of PVA is preferably 0.03 to 10 parts by weight with respect to the admixture, and if the blending amount of bentonite is less than 0.03 parts, the effect of improving the adhesion is at least weak, and when blended more than 10 parts, the decrease in strength may increase.

The saccharide used in the present invention refers to an oligosaccharide such as a disaccharide or a trisaccharide.

Specifically, sucrose, raffinose, etc. are mentioned.

The amount of sugar used is preferably 0.01 to 0.2 parts by weight with respect to the admixture, and when it is less than 0.01 parts by weight, the effect of improving the adhesion is weak, and when blended in excess of 0.2 parts by weight, the decrease in strength may increase.

Butyl acrylate-styrene used in the present invention is used to control viscosity and improve adhesion.

The butyl acrylate-styrene is preferably contained in an amount of 0.1 to 15 parts by weight of 100 parts by weight of the cement.

When the content of the butyl acrylate-styrene exceeds 15 parts by weight, the adhesion strength is improved, but the workability may be reduced due to the increase in the viscosity, and if the content of the butyl acrylate-styrene is less than 0.1 parts by weight, the viscosity control and adhesion improvement effect may be weak.

Polyisobutylene used in the present invention is used to improve watertightness and durability.

The polyisobutyrene is preferably contained in an admixture of 0.1 to 15 parts by weight.

When the content of polyisobutyrene exceeds 15 parts by weight, durability is improved, but workability may be reduced due to increased viscosity, and if the content of polyisobutyne is less than 0.1 parts by weight, the effect of improving watertightness and durability may be insufficient. have.

When sodium polyacrylate is added to the admixture of the present invention, a stable concrete structure can be formed by imparting fluidity, cohesive force and material separation prevention, and the sodium polyacrylate is contained in 0.01 to 10 parts by weight in the admixture. desirable.

When the content of sodium polyacrylate exceeds 10 parts by weight, fluidity and material separation prevention properties are improved, but workability may be reduced due to increased viscosity, and if the content of sodium polyacrylate is less than 0.01 parts by weight, cohesive force and material separation prevention properties are improved The effect may be weak.

The isobutyl oleate used in the present invention serves as an adjuvant added for chemical stabilization, and is particularly used to provide a bubble stabilization role, and the isobutyl oleate contains 0.1 to 5 parts by weight of the admixture. It is preferable to be

If the amount of the isobutyl oleate is less than 0.1 parts by weight, it cannot be stably mixed with other components, and if it exceeds 5 parts by weight, it may adversely affect performance, such as a decrease in the strength of concrete.

As the emulsifier used in the present invention, glycerin fatty acid ester, polyglycerol fatty acid ester, ethoxylated sorbitan fatty acid ester, ethoxylated alkylamine, etc. can be used alone or in combination, and the emulsifier is 0.1 in the admixture. It is preferable to contain to 5 parts by weight.

If the content of the emulsifier exceeds 5 parts by weight, it adversely affects the performance, such as a decrease in concrete strength, and the content of the emulsifier is less than 0.1 parts by weight and it is not possible to stably mix with other components of the admixture.

Examples of the air entraining agent of the present invention include anionic air entraining agents (sodium lauryl ether sulfate, vinzoresin, etc.), cationic and nonionic air entraining agents, and preferably sodium lauryl ether which is an anionic air entraining agent. It is preferable to use sulfate, or vinzoresin.

The air entraining agent is preferably contained in an amount of 0.1 to 5 parts by weight based on the admixture, and it is effective to keep the amount of air constant within the above range.

In addition, since the pigment pigment has a variety of colors, it can be used for concrete pavement of various colors.

As a pigment pigment used for this invention, a well-known pigment pigment can be used.

Although the pigment pigment may be a pigment single-piece|unit (colorable compound itself), in order to improve the characteristic of a pigment, additives, such as a pigment derivative, may be included.

The pigment derivative provides a functional group such as an acidic group such as a sulfone group or a carboxyl group, a basic group such as an amino group or an alkylamide group, a phthalimidemethyl group, a nitro group, and a sulfonamide group to the skeleton of the pigment alone, stabilization and crystallization of the pigment crystal It is a compound which has a role of adding various functions, such as suppression of growth and improvement of the dispersion stability of a pigment, to a pigment.

Moreover, the salt to which the ion adhered with respect to said acidic group or basic group is also contained in a pigment derivative.

As for the combination of the pigment and the pigment derivative, the pigment skeleton part may be common or may be different.

A pigment performs the surface treatment process by a pigment derivative beforehand, and what a pigment derivative is contained is called a pigment, and it is marketed in many cases.

Moreover, when dispersing, a pigment derivative can also be added as a dispersing auxiliary agent which improves dispersibility.

Pigment pigments include Phthalocyanine Green (CI 74260), Phthalocyanine Blue (CI 74160), Mitsubishi Carbon Black MA100, Perylene Black (BASF K0084. K0086), Cyanine Black, Linole Yellow (CI21090), Linol Yellow GRO (CI 21090) , Benzidine Yellow 4T-564D, Mitsubishi Carbon Black MA-40, Victoria Pure Blue (CI42595), CI PIGMENT RED97, 122, 149, 168, 177, 180, 192, 215, C.I. PIGMENT GREEN 7, 36, C.I. PIGMENT 15:1, 15:4, 15:6, 22, 60, 64, C.I. PIGMENT 83, 139 C.I. One or more types such as Pigment VIOLET 23 may be selected and used, but the present invention is not limited thereto.

Inorganic pigment pigments include calcium carbonate, magnesium carbonate, silica, silica-alumina, glass powder, glass beads, mica, graphite, barium converted, aluminum hydroxide, talc, kaolin, acid clay, activated clay, bentonite, diatomite, montmorillonite, dolomite One or more of these may be selected and used, but the present invention is not limited thereto.

In addition, the pigment pigment is preferably used in the range of 0.3 to 5 parts by weight based on 100 parts by weight of the cement composition, for this reason, when it is less than 0.3 parts by weight, it is difficult to sufficiently expect a visual effect, and on the contrary, when it exceeds 5 parts by weight It not only lowers economic efficiency, but also adversely affects the properties of the coating film.

And, it may further include a strength retaining member between the steps (c) and (d), wherein the strength retaining member has a different characteristic in that it is made of a metal wire mesh or a resin net.

After the step (e), it has another feature in further applying a surface reinforcing agent on the surface of the colored concrete.

In addition, the admixture is, based on 100 parts by weight of the admixture, 0.3 to 15 parts by weight of a polycarbonate-based water reducing agent, 0.1 to 10 parts by weight of bentonites, 0.03 to 10 parts by weight of polyvinyl alcohol, 0.1 to 15 parts by weight of butyl acrylate-styrene , 0.1 to 15 parts by weight of polyisobutyrene, 0.01 to 10 parts by weight of sodium polyacrylate, 0.01 to 0.2 parts by weight of sugar, 0.1 to 5 parts by weight of isobutyl oleate, 0.1 to 5 parts by weight of an emulsifier, 0.1 to 5 parts by weight of an air entraining agent Including parts by weight, the emulsifier is selected from the group consisting of glycerin fatty acid ester, polyglycerol fatty acid ester, ethoxylated sorbitan fatty acid ester, and ethoxylated alkylamine, and the air entraining agent is sodium lauryl It is characterized in that at least one selected from the group consisting of ether sulfate or vinzolezin.

If necessary, in the wet concrete pigment construction method of the present invention, the admixture may further contain one or more additives selected from defoamers, dispersants, sunscreens, viscosity modifiers, antioxidants, rust preventives, etc. according to specific uses, However, the present invention is not limited thereto.

In addition, as a specific example of the surface reinforcing agent, it can be carried out by coating using a known acrylic surface reinforcing agent, a urethane-acrylic surface reinforcing agent, or a water-soluble epoxy-based surface reinforcing agent.

In the wet concrete pigment construction method of the present invention, the admixture may further include an antifoaming agent used to impart a bubble removing function, and the defoaming agent is BYK-Chemie whose main components are a polymer and polysiloxane solution that destroy bubbles. I use a BYK-A501 from the company.

In addition, one or more of EFKA's EFKA8203 and Impag's Perenol E8 may be selected and used, but the present invention is not limited thereto.

In the wet concrete pigment construction method of the present invention, the admixture may further include a dispersing agent to impart dispersibility, and the dispersant is BYK containing a solution in a high molecular weight block copolymer having a pigment-friendly group as a main component. -Chemie's BYK-#161, BYK-#168, 1-methoxy-2 propylene acetate, EFKA's EFKA4048, 4060, etc. can be selected and used, but it is not limited thereto.

In the wet concrete pigment construction method of the present invention, the admixture may be used by adding a sunscreen agent as necessary for UV resistance.

In addition, in the wet concrete pigment construction method of the present invention, the admixture may further include a solid rust preventive agent in order to improve the rust preventive function.

The solid rust inhibitor is preferably at least one selected from the group consisting of sodium nitrite, ammonium phosphate, sodium carbonate, and ammonium benzoate.

In addition, in the wet concrete pigment construction method of the present invention, after the curing and joint cutting step, the step (f) of forming a pattern on the upper surface may be further included.

The pattern may be formed through any one of a stamp, a stencil, a Dynatex mat, and a mechanical plaster.

After that, it can be applied using the known surface reinforcing agent described above, and as a specific example of the surface reinforcing agent, a known acrylic surface reinforcing agent, urethane-acrylic surface reinforcing agent, or water-soluble epoxy-based surface reinforcing agent is used and then dried construction can be completed.

A coating film can be formed by applying the wet concrete pigment construction method of the present invention to any one of a road, an underground parking lot, and an outdoor parking lot.

Specific content for carrying out the present invention will be described in more detail in the following examples, but the present invention is not limited thereto.

[Examples and Comparative Examples]

In order to grasp the physical properties of colored concrete using the wet concrete pigment composition for the wet concrete pigment construction method of the present invention, the mixing amount according to the factory mixing per 1 m of ready-mixed concrete is shown in [Table 1] below.

division Unit material amount (Kg) W C coarse aggregate fine aggregate admixture 1 admixture 2 admixture 3 admixture 4 pigment Example 1 150 260 850 800 One 75 Example 2 150 260 850 800 One 75 Example 3 180 350 1000 1000 5 100 Example 4 180 350 1000 1000 5 100 Comparative Example 1 150 260 850 800 One 75 Comparative Example 2 180 350 1000 1000 5 100

W: Water, C: Cement

[Example of admixture preparation]

[Preparation Example of Admixture 1]

Based on 1 kg of admixture, 0.3 parts by weight of polycarbonate water reducing agent, 0.1 parts by weight of bentonites, 0.03 parts by weight of polyvinyl alcohol, 0.1 parts by weight of butyl acrylate-styrene, 0.1 parts by weight of polyisobutyne, 0.01 parts by weight of sodium polyacrylate, It was prepared including 0.01 parts by weight of sugar, 0.1 parts by weight of isobutyl oleate, 0.1 parts by weight of an emulsifier, 0.1 parts by weight of an air entraining agent, and the remainder of water.

[Preparation example of admixture 2]

Based on 1 kg of admixture, 15 parts by weight of polycarbonate-based water reducing agent, 10 parts by weight of bentonites, 10 parts by weight of polyvinyl alcohol, 15 parts by weight of butyl acrylate-styrene, 15 parts by weight of polyisobutylene, 10 parts by weight of sodium polyacrylate, It was prepared including 0.2 parts by weight of sugar, 5 parts by weight of isobutyl oleate, 5 parts by weight of an emulsifier, 5 parts by weight of an air entraining agent, and the remainder of water.

[Production Example of Admixture 3]

It was prepared including 0.3 parts by weight of a polycarbonate-based water reducing agent, 0.1 parts by weight of bentonites, 0.03 parts by weight of polyvinyl alcohol, 0.01 parts by weight of sodium polyacrylate, 0.01 parts by weight of sugar, and the remaining amount of water with respect to 1 kg of admixture.

[Preparation example of admixture 4]

Based on 1 kg of admixture, 15 parts by weight of a polycarbonate-based water reducing agent, 10 parts by weight of bentonites, 10 parts by weight of polyvinyl alcohol, 10 parts by weight of sodium polyacrylate, 0.2 parts by weight of sugars and the remaining amount of water were included.

The length change rate of the wet concrete pigment compositions prepared according to Examples 1 to 4 and Comparative Examples was measured according to KS F 2424 (test method for length change of concrete), and the results are shown in Table 2 below.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 length change rate
(%) 0.03 0.02 0.03 0.02 0.06 0.05

As shown in Table 2 above, when comparing the wet concrete pigment compositions prepared according to Examples 1 to 4 and Comparative Examples, it was confirmed that the rate of change in length was reduced, thereby reducing the shrinkage.

The wet concrete pigment compositions prepared according to Examples 1 to 4 and Comparative Examples were subjected to bending, compression and adhesive strength tests according to KS F 4042 (polymer cement mortar for repairing concrete structures), and the results are shown in the table below. 3 is shown.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 burglar
(Mpa) warp 11.8 11.9 11.6 12.0 10.1 10.2 compression 34 33.2 31 33 18 16 adhesion 3 2.8 2.9 3.1 1.7 1.6

As shown in Table 3 above, when comparing the wet concrete pigment compositions prepared according to Examples 1 to 4 and Comparative Examples, it was confirmed that the physical properties of bending, compression, tensile and adhesive strength were better.

For the wet concrete pigment compositions prepared according to Examples 1 to 4 and Comparative Examples, the condition in the container and the drying time test according to KS M 5000 were performed, and the coating workability according to KS M 5037 was performed, 5 %-H2SO4, and 5%-NaOH aqueous solution for 7 days immersion / under the conditions of 20 ℃ acid resistance and alkali resistance tests were carried out, low and high temperature repeated resistance tests were carried out according to KS F 4921, and stain resistance was tested The results are shown in Table 4 below.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 solvent resistance clear clear clear clear crack generation clear alkali resistance clear clear clear clear Inadequate Inadequate impact resistance Great Great Great Great Inadequate Inadequate stain resistance Great Great Great Great Inadequate Inadequate

As shown in Table 4, there are effects such as maximizing physical/chemical properties such as durability, impact resistance, solvent resistance, and stain resistance of the wet concrete pigment compositions prepared according to Examples 1 to 4 and Comparative Examples. .

As described above, the present invention has been shown and described in relation to specific embodiments, but within the limits that do not depart from the technical spirit of the present invention provided by the following claims, the present invention can be variously improved and changed. It will be apparent to one of ordinary skill in the art.

The present invention relates to an improved wet concrete pigment construction method so that colored concrete pavement can be constructed in various colors using pigment pigments, which are pigments of eco-friendly materials, and to cement concrete with pigment pigments. We provide a wet concrete pigment construction method that expresses a variety of colors using

Another object of the present invention is to provide a wet concrete pigment construction method that can implement various colors that are eco-friendly by using pigments.

Claims (7)

(a) a subgrade compaction step of forming a subgrade compaction layer; (b) sub-base pouring and compaction step for forming a sub-base layer on the sub-substrate compaction layer; (c) a separation membrane installation step to have a separation membrane on the auxiliary base layer; (d) a colored concrete paving step for forming a colored concrete layer on the separation membrane; (e) a curing and joint cutting step of allowing the colored concrete layer to be cured and cut using a joint; A wet concrete pigment construction method comprising the step of forming a pattern by
The color concrete paving step of (d) is per 1 ㎥ of concrete, 150 to 180 kgf of water by weight; cement weighing 260 to 350 kgf; fine aggregate weighing 800 to 1000 kgf; coarse aggregate weighing 850 to 1000 kgf; A wet concrete pigment composition mixed in an amount of 0.3 to 5 parts by weight of a pigment pigment containing a pigment derivative based on 100 parts by weight of the cement composition containing an admixture of 1 to 5 kgf in weight is poured into the separation membrane, and the surface is cured immediately before hardening. including finishing
The admixture is 0.3 to 15 parts by weight of a polycarbonate-based water reducing agent, 0.1 to 10 parts by weight of bentonites, 0.03 to 10 parts by weight of polyvinyl alcohol, 0.1 to 15 parts by weight of butyl acrylate-styrene, 0.1 to 15 parts by weight of polyisobutyrene parts, sodium polyacrylate 0.01 to 10 parts by weight, sugars 0.01 to 0.2 parts by weight, isobutyl oleate 0.1 to 5 parts by weight, emulsifier 0.1 to 5 parts by weight, air entraining agent 0.1 to 5 parts by weight,
The emulsifier is selected from the group consisting of glycerin fatty acid esters, polyglycerin fatty acid esters, ethoxylated sorbitan fatty acid esters, and ethoxylated alkylamines, and the air entraining agent is sodium lauryl ether sulfate or vinzoresin. Select one or more types from the group consisting of
The admixture further contains at least one additive selected from a sunscreen agent or a solid rust preventive agent, and the solid rust preventive agent is selected from the group consisting of sodium nitrite, ammonium phosphate, sodium carbonate and ammonium benzoate Wet concrete pig, characterized in that How to build a ment. delete delete delete delete delete delete