KR19990034105A - Plastering method using color silica - Google Patents

Abstract

The present invention relates to a method of plastering the surface of the concrete by mixing the adhesive resin and the color silica.

Plastering method using the color silica according to the present invention, the ground surface cleaning step to remove the foreign matter and water on the bottom surface of the ground layer (1) of the concrete structure, and the cement + sand mortar to smooth the irregular finishing surface A base layer smoothing step of forming a mortar layer (2) by applying a primer for facilitating adhesion of the resin silica mixture mixed with the color silica and the adhesive resin on the mortar on the base surface finished with the mortar to the mortar (3) the primer coating step to form, and the silica sand mixture mixed with the color silica and the adhesive resin on the entire surface to which the primer is applied and placed on the surface and plastered the color silica sand layer (4) After completion, it is characterized in that the protective resin coating step for the finish on the color silica.

Therefore, it is possible to improve the working environment in the finishing process of building construction, to simplify the finishing process to reduce the manpower, and to shorten the overall construction period by enabling the continuous process.

Description

Plastering method using color silica

The present invention relates to a plastering method using color silica, and more particularly, to a plastering method of applying the color silica mixed with the adhesive resin directly on the surface or mortar surface of the concrete.

At present, the general method of finishing the surface of concrete structure is applying tile bonding method or artificial stone grinding method. Tile bonding method has the advantage of falling out due to severe air temperature difference, and artificial stone grinding method withstands external shock well. However, the detailed process is complicated, work manpower is required, and various problems are inherent, such as noise and cement sludge, and the working environment is extremely poor. There is an urgent need for the development of new alternative construction methods to meet the various requirements for the same flooring materials and the strengthening of environmental regulations.

Currently, as the finishing material of the floor and stairs of concrete structures, the tile bonding method for finishing the tiles and the mortar mixed with crushed stone and back cement are poured, and the artificial stone dipping method for dipping is commonly used. The grinding method is a method developed in Japan and introduced in Korea, and has various problems such as complicated detailed process and generation of cement sludge. In terms of economics, the required input manpower per cubic meter is 0.72 persons for artificial stone dipping method and 0.43 for tile method, which is known as a representative labor-intensive method. Considering the increase in labor costs, in terms of construction, in terms of construction, the artificial grind method is applied by back cement and mortar, and after the mortar is cured, it is processed 2-3 times to finish it with a smooth and glossy floor. Due to this complexity, it takes about 7 to 10 days for one cycle to have a significant impact on other processes.In the tile method, it is difficult to secure smooth surfaces by attaching each tile to the tile. Or dropping out, there is a difficulty in maintenance. In addition, in the environmental aspect, the water dipping method generates noise and cement sludge during water dipping, which is one of the worst working processes, and there is a strong demand for the development of a method for improving or replacing this.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plastering method using collar silica sand that can simply finish a concrete surface by a method of plastering the colored silica sand.

1 is a cross-sectional view of the finished concrete structure obtained by the plastering method using the color silica sand according to the present invention.

* Explanation of symbols for main parts of the drawings

1: base layer 2: mortar layer

3: primer layer 4: color silica layer

Plastering method using the color silica according to the present invention for achieving the above object, the ground surface cleaning step to remove the foreign matter and moisture of the base surface of the base layer of the concrete structure, cement, sand to smooth the irregular finish surface The base surface smoothing step of forming a mortar layer by pouring a mortar and a primer for facilitating adhesion of a resin silica mixture mixed with color silica and an adhesive resin on the base surface on which the mortar is cast is applied to the base surface. After the primer coating step of forming a layer and the resin silica mixture mixed with the color silica and the adhesive resin on the entire surface to which the primer is applied are placed and plastered on the surface to form a color silica layer, It consists of a protective resin coating step for finishing on the surface of the color silica sand.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Plastering method using the color silica according to the present invention, the ground surface cleaning step to remove the foreign matter and moisture of the ground surface of the ground layer (1) of the concrete structure, and the cement + sand mortar to smooth the irregular finish surface The base surface smoothing step of forming a mortar layer (2) by pouring a primer for applying a primer for facilitating the adhesion of the resin silica mixture mixed with the color silica and the adhesive resin on the base surface poured with mortar to the base surface primer A primer coating step of forming a layer (3), and a color silica plastering step of forming a color silica sand layer (4) by placing and plastering a resin silica mixture mixed with a color silica sand and an adhesive resin on the entire surface to which the primer is applied And after finishing the adhesion of the color silica sand, characterized in that the protective resin coating step for finishing on the color silica sand surface.

The color silica is referred to as the silica sand pulverized by granules by grinding the raw stone having a natural color, produced by the leading domestic and foreign manufacturers, so that those skilled in the art can be purchased and used commercially available It is known to. Particularly preferably, a high-purity quartz-based raw material, washing sand, chain sand, instructor, silica sand, slag and the like may be processed and colored by a separation method.

The mortar is also a cement mortar mixed with water using conventional portland cement, sand, etc., and can be easily understood by those skilled in the art.

The primer may be one having the same or similar chemical properties and adhesive properties as those of the adhesive resin and the protective resin described below, such as polyepoxy resin, polyurethane resin, or polyacrylic resin.

In the ground surface cleaning step, it is a step of removing foreign substances and moisture from the base of the frame concrete, it can be understood as a means for ensuring the bonding with the mortar installed on the top.

In the base surface smoothing step, it is possible to form a smooth surface by placing cement mortar on the arranged base surface, which is understood as a means for providing a smooth outer surface by smoothing the colored silica surface placed above. Can be. Although it may vary depending on the irregularity of the base surface, the mortar is usually laid in a thickness of 10 to 25mm can be laid smoothly.

The mortar surface is coated with a primer for facilitating adhesion of the color silica, and the primer may vary depending on the type and adhesive strength of the resin, but is usually about 0.5 to 1 mm in an amount of about 0.5 to 1.0 kg / m 3. It can be applied to a thickness of.

After the application of the primer, the colored silica layer 4 may be formed by placing and plastering a resin silica mixture in which color silica and adhesive resin are mixed on the entire surface to which the primer is applied. The color silica layer 4 may itself represent the bonding and buffering properties of the decoration and adhesive resin itself, and may also vary depending on the type of adhesive resin used, but may be poured in a thickness of 3 to 10 mm. have.

The resin silica mixture may be composed of 5 to 20% by weight of the adhesive resin and 80 to 95% by weight of color silica.

As the adhesive resin, a general synthetic resin which can exhibit adhesiveness during curing, such as polyepoxy resin, polyurethane resin, polyacrylic resin, unsaturated polyester resin, and the like may be used as the protective resin. In addition, the distinction between the adhesive resin and the protective resin may be considered to have no practical discrimination benefit as the distinction is based only on the bonding state with the color silica. Preferably, the adhesive resin is polyacrylic resin, 100% acrylic emulsion, the solid content of 47 ± 1, pH 9.5 to 10.0 and specific gravity of 1.0 to 1.1 acrylic emulsion, in the case of unsaturated polyester resin, solid content of 35 ± 1, Ester resin oil with a specific gravity of 1.09 to 1.13, viscosity of 2.7 to 4.3, solid content of 37 ± 1 for polyurethane resins, viscosity of 4.6 to 4.8, urethane oil with specific gravity of 1.0 to 1.1, solid content of 35 ± 1, viscosity of polyepoxy resins Epoxy emulsions of 2.1 to 3.5 and specific gravity 1.1 to 1.2 may be used, respectively.

The resin silica sand mixture may further include a back cement.

The resin silica sand mixture may also consist of 20 to 40% by weight of back cement, 60 to 70% by weight of color silica, 1 to 5% by weight of adhesive resin and water as the balance.

Preferably, the resin silica sand mixture includes a polyvinyl acetate resin, a polyacrylic acid ester resin, a styrene-butadiene resin, a vinyl chloride-vinylidene chloride resin, an asphalt and a polyepoxy resin in the case where the cement silica mixture contains back cement and water. And the like can be used.

In the resin silica sand mixture, the back cement may be replaced with a conventional portland cement or the like, but it may be considered to use a back cement for aesthetic appearance.

In addition, the resin silica sand mixture may further include a conventional additive, and examples of the additive may include conventional antifoaming agents and lubricating accelerators. All of these antifoaming agents and lubricating agents can be understood to be well known to those of ordinary skill in the art to purchase and use them commercially.

After the primer is applied, plastering of the color silica is performed, which may be performed by pouring the resin silica sand mixture having the above-described configuration into a predetermined thickness.

After installation of the color silica, a protective resin may be further applied to the surface of the color silica to prevent deviation of the color silica, to protect the color silica from the impact from the outside, and to prevent the ingress of moisture or fine dust. .

This protective resin can also be used the same or similar synthetic resin as the adhesive resin.

In the plastering method using the color silica according to the present invention according to the configuration as described above, the so-called polymer-cement aggregate is used as the color silica, generally 40 to 50% solids concentration and 50 to 10,000 centipoise viscosity It may be understood that the emulsified synthetic resin having is included as an adhesive resin, and other curing mechanisms thereof are as follows.

The mixed resin emulsion is uniformly filled in the fine pores in the cement cured product, and concentrated according to the progress of the hydration reaction of the cement and the evaporation or movement of moisture. Bondable resin particles are agglomerated and fused to cement, aggregate, or the like to form a dense structure. Therefore, the movement of moisture is suppressed, so that the hydration reaction proceeds. Therefore, even when the resin emulsion mixed cement is exposed to the atmosphere as a thin layer, the curing of cement proceeds relatively well, resulting in a strong cured product.

The resin / cement ratio (P / C ratio) that maximizes the mixing effect of the resin emulsion is generally about 0.15 to 0.25 regardless of the type of resin, and the effects include enhancement of adhesion, bending, tensile strength, etc. It can be easily understood in the art to include a decrease in the dry shrinkage rate.

The resin emulsion mixed cement has a higher ductility at the same water / cement ratio (W / C ratio) as compared to the non-mixed cement, and therefore the W / C ratio can be reduced when mixing the resin emulsion. This is understood to be due to the ball bearing effect or air entrainment of the polymer particles.

The adhesiveness of the resin emulsion mixed cement shows excellent adhesion to many materials as compared to the non-mixed cement, which is a component of the adhesiveness of the resin particles themselves, but is easily wetted on the surface to be adhered, and the adhesiveness is permeable. Additional actions, such as increased fluidity, have been added to help promote.

In addition, the curing effect due to the reduction of water voids on the adhesive interface and the repair effect of the W / C reduction, the resistance to bleeding (bleeding), and the elastic modulus of the resin emulsion mixed cement used are less than that of the unmixed cement, Since the tensile strength is large, and the dry shrinkage rate during the curing process is generally small, and the waterproofing property is given, the adhesiveness has a desirable effect.

Bond strength enhancement of the resin emulsion cement mixing mechanism, so by the addition of water and resin in the cement and quartz sand color is when calcium in the hydration reaction of cement Cement-on (Ca ²⁺⁾ water and hydroxyl groups (OH ^-) and used to aggregate Oxygen group (O ^2- ) of the silica sand reacts to form a complex salt, and the strength increase effect of the resin itself is added, resulting in density increase and strength increase effect between particles.

Volumetric expansion is caused by the ettringite produced by the use of cement to have a mechanism to expand, thereby exhibiting a crack preventing effect.

As resin is added and mixed with cement and color silica, appropriate particles are filled in the gap between aggregates, which increases the dispersion effect of cement paste in the aggregate gap, thereby reducing the possibility of formation of microcracks caused by shrinkage of cement paste. Can be reduced.

In addition, even when it does not contain cement and water, color silica may be used as a filler, and adhesiveness and strength may be improved by using the bonding mechanism of the resin itself.

Adhesive resins are roughly classified into thermoplastic resins such as polyethylene and vinyl chloride resins and thermosetting resins such as phenol and melamine resins. The thermoplastic resin is deformed by heating and can be reused by cooling, but the thermosetting resin is not deformed even by heating. In the present invention, it is particularly considered preferable to use a thermosetting resin.

The properties of the resin give somewhat different properties by combining two or more structural units repeatedly by polymerization or condensation. The resin does not change in the structural unit itself, and there is a considerable difference in properties depending on the degree of polymerization and the number of polymerizations, and the degree of polymerization is usually from tens to millions.

Epoxy resins can be roughly classified into reactions between epoxys, reactions between epoxy groups and aromatic or aliphatic hydroxyl groups, and curing agents through various kinds of functional groups, and mechanical bonding due to enhancement of adhesion between hydrogen bonds, which are chemical bonds, and micropores of silica. This has the effect of promoting adhesion and strength.

Unsaturated polyester resin is a generic term for a high molecular compound containing an ester bond in the main chain of constituent molecules, and is easy to handle, has excellent curability, and can freely adjust the curability even at room temperature or high temperature. Cured resins generally have good mechanical properties, electrical properties, water resistance, chemical resistance and the like.

Polyurethane resin can also be used a conventional resin that can be purchased commercially.

Hereinafter, preferred embodiments and comparative examples of the present invention will be described.

The following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

1 to have a cross section of the configuration as shown in Figure 1, the process according to the present invention to the specifications described in Table 1 below 20mm base mortar treatment on the existing concrete surface and after curing for 1 day, 1 The surface was finished with 0.5 mm of primary primer, 0.5 mm of secondary color silica layer, and tertiary protective resin. In Example 1, 0.5 mm primary primer was treated with a material of 1: 1 mixed with acrylic resin emulsion and water, and the cement cement mixture was coated with a thickness of 5 mm on it. The resin was coated and finished to a thickness of 3 mm.

The primary primer coating may be applied using a brush, roller, spray, etc., and the silica sand mixture may be plastered by a conventional trowel.

The comparative examples were mixed with the back cement, crushed stone, and water on the existing concrete surface and placed in a thickness of 35 mm, and after 14 days and 28 days of hardening, water was changed twice.

The curing room was maintained at a normal standard temperature of 20 ± 2 ℃, humidity 65 ± 5%, and carried out a physical property test is shown in Table 2 below.

As a result of the synthesis of the above embodiments, the finishing surface obtained by the plastering method using the color silica according to the present invention uses an adhesive resin, thereby ensuring the durability of the resin as well as wrapping each particle of the color silica with a polymer compound However, by absorbing the pressure well, the impact resistance and the compressive strength can be exerted, thereby obtaining excellent strength compared to the conventional floor finishing mortar. In particular, the initial strength is excellent and the curing time is short, so that continuous work is possible. In addition, the adhesion strength between the particles is also advantageous in terms of preventing cracks, it was found to be excellent in terms of securing durability for the floor finishing material because the final finish by applying the upper protective resin 2 to 3 times to improve the surface strength.

In addition, in the case of the surface finished with color silica on the adhesive resin, the excellent wear resistance of the color silica itself is expressed on the surface as it is, and the wear resistance is about 20 times better than that of the existing artificial grind method. And since the protective resin is coated on the upper side on the non-slip side, it may have an advantage of excellent wear resistance and does not slip well.

Since color silica can be used by mixing various colors of silica, it is possible to secure various colors, and because the silica sand itself is colored, the color preservation effect is more than doubled in accelerated weathering test.

Moreover, adhesive resin has excellent chemical resistance to prevent surface damage caused by calcium chloride infiltration and to prevent water penetration by wrapping each colored silica particles with adhesive resin, so that the absorption rate is 40 times higher than that of conventional artificial grind method. Excellent water resistance is also excellent, water cleaning work is more advantageous.

Therefore, it is possible to achieve the improvement of working environment and construction quality at the construction site, and it has excellent physical characteristics such as compressive strength, adhesion strength, durability, exterior property, chemical resistance, etc. In addition to floor finishing materials such as floors, staircases, corridors and verandas in general commercial buildings, it can be applied to non-residential industrial buildings, factory floors, indoor / outdoor parking lots, floors that require anti-slip and dust suppression, and for indoor and outdoor decoration or outdoor landscaping. It can be used for park walks, etc., and shows a wide range of applications.

Therefore, according to the present invention, it is possible to improve the working environment in the finishing process at the time of building construction, to simplify the finishing process, to reduce the manpower, and to shorten the overall construction period by enabling the continuous process.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (12)

Ground surface cleaning step to remove foreign substances and water from the ground surface of the ground layer of the concrete structure, and ground surface smoothing step to form mortar layer by pouring cement and sand ground mortar to smooth irregular finishing surface. Can be omitted if the smoothness is good) and a primer coating for forming a primer layer by applying a primer for facilitating adhesion of the resin-silica mixture in which the color silica and the adhesive resin are mixed on the mortar surface to the mortar surface. After the step of finishing the color silica sanding step and the color silica sanding step to form a color silica sand layer by placing and plastering the resin silica mixture mixed with the color silica and the adhesive resin on the front surface of the primer is applied to the color silica Plastering method using color silica, characterized in that the protective resin coating step for finishing. The plastering method according to claim 1, wherein the color silica sand is processed and colored by high-purity quartz material, washing sand, chain sand, instructor, silica sand, slag, and the like by a granular separation method. The method of claim 1, wherein the primer is selected from the group consisting of polyepoxy resin, polyurethane resin, polyacrylic resin, and the like. The method of claim 3, wherein the primer is coated with a thickness of about 0.5 to 1 mm in an amount of about 0.5 to 1.0 kg / ㎥. The method of claim 1, wherein the color silica sand layer is installed in a thickness of 3 to 10mm. The method of claim 1, wherein the resin silica mixture is made of 5 to 20% by weight of the adhesive resin and 80 to 95% by weight of color silica. The plastering method according to claim 6, wherein the adhesive resin is selected from the group consisting of polyepoxy resins, polyurethane resins, polyacrylic resins, unsaturated polyester resins, or mixtures of two or more thereof. The method of claim 1, wherein the resin silica sand mixture further comprises a back cement. 10. The method of claim 8, wherein the silica sand mixture is composed of 20 to 40% by weight of back cement, 60 to 70% by weight of color silica, 1 to 5% by weight of adhesive resin, and water as the balance. Plastering method. 10. The method of claim 9, wherein the adhesive resin contained in the silica sand mixture is polyvinyl acetate resin, polyacrylic acid ester resin, styrene-butadiene resin, vinyl chloride-vinylidene chloride resin, asphalt, polyepoxy resin or two or more thereof. Plastering method using color silica, characterized in that selected from the group consisting of a mixture. The method of claim 1, wherein as the protective resin, a general synthetic resin capable of exhibiting adhesion upon curing, such as polyepoxy resin, polyurethane resin, polyacrylic resin, unsaturated polyester resin, is used. Plastering method. Mortar layer is formed to a thickness of 5 to 40mm by laying the ground surface cleaning step to remove foreign substances and water from the bottom surface of the ground layer of concrete structure, and by placing cement and sand floor mortar to smooth the irregular finishing surface. A primer layer is formed to a thickness of 0.1 to 1 mm by applying a primer for facilitating adhesion of the resin silica mixture mixed with the color silica and the adhesive resin onto the mortar surface on the base surface smoothing step and the base surface laid with the mortar. The primer coating step and the resin silica mixture in which the color silica and the adhesive resin are mixed on the entire surface to which the primer is applied are placed and plastered on the floor to form the color silica layer to a thickness of 0.1 to 10 mm and the color silica laying step and color. After the silica sand laying adhesion is completed, the protective resin nose to coat the protective resin for finishing to the thickness of 0.1 to 5㎜ on the color silica laying surface Hair color method using a quartz sand, characterized by made of an step.