KR20120108688A - Polymer cement mortar composite and manufacturing method of water retainable and permeable block using the composite - Google Patents

Abstract

PURPOSE: An environmentally friendly cement mortar composition and a manufacturing method of water retainable and permeable block using the same are provided to enhance strength and durability of water retainable and permeable block. CONSTITUTION: An environmentally friendly cement mortar composition comprises an inorganic binding material, a polymer-type binding material, fine aggregate and water. 0.1-20 parts by weight of the polymer-based binding material is contained in the polymer cement mortar composition based on 100 parts by weight of the inorganic binding material. A mixing weight ratio of the fine aggregate to inorganic binding material is 1:1-5. 0.1-15 parts by weight of water is contained in the polymer cement mortar composition based on 100 parts by weight of the inorganic binding material. The inorganic binding material comprises cement and bottom ash. The polymer-based binding material comprises 30-70 parts by weight of styrene acryl emulsion, 1-25 parts by weight of ethylacrylate, 1-25 parts by weight of acryl butyl, and 1-25 parts by weight of zinc ammonium chloride.

Description

Polymer cement mortar composite and manufacturing method of water retainable and permeable block using the composite

The present invention relates to a cement mortar composition and a method for manufacturing a block using the same, more particularly, an environmentally friendly polymer cement that can be used to manufacture a block having excellent strength and durability by using industrial waste such as bottom ash. It relates to a mortar composition and a block manufacturing method using the same.

Generally, blocks are divided into two types: cement blocks and clay blocks.

Cement block is manufactured by curing after mixing with cement, sand and gravel as the main raw materials, and uses and forms vary depending on the composition and curing conditions of the material. Cement blocks are also used as pedestrian floor blocks and boundary blocks in India to improve the aesthetic appearance of pedestrian roads, and are also used to create design streets for local and specialized commercial districts and cultures. . However, the cement blocks are defective due to deterioration in durability.

Clay block is an environmentally friendly material, but when it is dried after molding, moisture in the capillary of the molded product evaporates, causing dry shrinkage, and cracking occurs due to such dry shrinkage, resulting in deterioration of strength and physical properties. There are many restrictions.

Currently, the sidewalks, driveways, parks, parking lots, etc. in urban areas all use concrete pavement or asphalt pavement, so that water flows into drains and discharges into drains early, and water stored on the pavement evaporates early. For this reason, when the temperature rises in a downtown area, the pavement surface becomes a high temperature, and the heat island phenomenon which deteriorates a living environment is generated because a downtown temperature rises.

Therefore, in order to reduce the heat island phenomenon caused by artificial packaging, it is necessary to develop a packaging material that can easily supply moisture to the basement, have a low heat capacity, and repair moisture. There is a need for the development of a water-retaining block that has a repair function that actively maintains water, and prevents the rise of the heat island phenomenon in the downtown area by preventing evaporation of the water by evaporation of the water as the temperature rises. It is becoming.

The problem to be solved by the present invention is the use of industrial ash, such as bottom ash (flytom ash), fly ash, blast furnace slag as a cement substitute, and excellent strength and durability when manufactured as a water-permeable block, bicycle road, parking lot, lightweight The present invention provides an environmentally friendly polymer cement mortar composition that can be applied to a traffic load passing road.

Another problem to be solved by the present invention is to use industrial waste, such as bottom ash (flytom ash), fly ash, blast furnace slag in order to solve the problems of the existing block, bicycle road, parking lot, The present invention provides a method for manufacturing an eco-friendly permeable block that can be applied to a light traffic load passing road.

The present invention provides a polymer cement mortar composition comprising an inorganic binder, a polymer binder, a fine aggregate, and water, wherein the polymer binder is contained in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the inorganic binder in the polymer cement mortar composition. , The mixing weight ratio of the inorganic binder and the fine aggregate is 1: 1 to 5, the water is contained in the polymer cement mortar composition 0.1 to 15 parts by weight based on 100 parts by weight of the inorganic binder, the inorganic binder is cement and bottom Including the ash, the polymer-based binder is styrene acrylic emulsion to prevent cracking by increasing the adhesion between cement and fine aggregate, ethyl acrylate to improve the dispersion stability of the polymer binder and increase the adhesive strength, and the adhesion of the polymer-based binder and Acryl butyl, and polymer based to improve tensile strength Jink ammonium chloride for improving the wet strength and abrasion resistance of the mixture, the styrene acrylic emulsion is contained 30 to 70 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder, the ethyl acrylate 1 to 25 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder, the acrylic butyl is contained 1 to 25 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder, Ammonium chloride provides an environmentally friendly polymer cement mortar composition containing 1 to 25 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder.

The inorganic binder may further include a fly ash for improving latent hydraulic properties, long-term strength and durability, the fly ash is preferably contained 1 to 20 parts by weight based on 100 parts by weight of the inorganic binder. Do.

The inorganic binder may further comprise a blast furnace slag for improving the latent hydraulic properties, long-term strength and durability, the blast furnace slag is preferably contained 1 to 30 parts by weight based on 100 parts by weight of the inorganic binder. Do.

In order to improve the diffusion rate of the polymeric binder and to improve the dispersion and storage stability of the polymeric binder, the polymeric binder may further include polyoxyethylene octyphenyl ether, and the polyoxyethylene octyphenyl ether may be It is preferable to contain 0.01-3 weight part with respect to 100 weight part of said polymeric binders in a polymeric binder.

The polymeric binder may further include carboxymethyl cellulose for improving the repairability and finishing workability of the mortar, and the carboxymethyl cellulose may be added to 100 parts by weight of the polymeric binder in the polymeric binder. It is preferable to contain 0.1-10 weight part with respect to.

The polymer cement mortar composition may further include an inorganic pigment, the inorganic pigment is contained 0.1 to 4 parts by weight based on 100 parts by weight of the polymer cement mortar composition, the inorganic pigment is titanium oxide, red iron oxide, yellow iron oxide, oxidation It is preferably made of one or more materials selected from chromium (CrO ₃ ), purple iron oxide, black iron oxide and carbon black.

In addition, the present invention, the step of pouring the polymer cement mortar composition in a mold formwork, and 1-30% by weight of white cement, 0.5 to 10% by weight of blast furnace slag, fly ash 0.5 to 10 on the poured polymer cement mortar composition Weight%, bottom ash 0.5 to 15% by weight, 20 to 60% by weight of fine aggregate having a particle size of 1 to 5 mm, 0.1 to 10% by weight of water, 0.1 to 10% by weight of the polymer binder and 0.1 to 5% by weight of inorganic pigment Permeability comprising the steps of pouring the prepared composition to a thickness of 0.5 to 3 cm, vibrating and compressing the poured composition, and forming a permeable block by surface finishing and drying the molded product. It provides a method of manufacturing a block.

Polymer cement mortar composition of the present invention has the advantage that can be recycled waste by using industrial waste, such as bottom ash (bottom ash), fly ash, blast furnace slag as a cement.

Maintenance capacity can be improved by using bottom ash, which is an industrial waste with high moisture content of the material itself, and water / cement (W / C) ratio can be effectively increased even by adding a small amount of polymer by using bottom ash with high moisture content of the material itself. Reduction may result in much higher strength development and durability improvement effects than conventional mortar compositions.

Industrial waste blast furnace slag, fly ash and bottom ash can be used as a substitute for cement, which can reduce material costs.

The use of polymeric binders comprising styrene acrylic emulsion, ethyl acrylate, acryl butyl and zinc ammonium chloride can improve the curing time, workability, strength and durability of the polymer cement mortar composition.

When manufactured as a water-permeable block using the polymer cement mortar composition of the present invention is excellent in strength and durability can be applied to bicycle roads, parking lots, light traffic load passing roads, etc., is environmentally friendly.

Hereinafter, preferred embodiments of the present invention will be described in detail. However, the following embodiments are provided to those skilled in the art to fully understand the present invention, and may be modified in various forms, and the scope of the present invention is limited to the embodiments described below. It doesn't happen.

The environmentally friendly polymer cement mortar composition of the present invention comprises an inorganic binder, a polymer-based binder, fine aggregate and water. The polymer cement mortar composition may further include an inorganic pigment.

The inorganic binder includes cement and bottom ash. The cement is 20 to 95 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder, the bottom ash is preferably contained 5 to 80 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder.

The inorganic binder may further include a fly ash for improving the latent hydraulic properties, long-term strength and durability, the fly ash is preferably contained 1 to 20 parts by weight based on 100 parts by weight of the inorganic binder. In this case, the cement is contained 20 to 94 parts by weight based on 100 parts by weight of the inorganic binder, the bottom ash is contained 5 to 79 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder. It is preferable.

In addition, the inorganic binder may further comprise a blast furnace slag for improving the potential hydraulic properties, long-term strength and durability, the blast furnace slag is contained 1 to 30 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder Preferably, in this case, the cement is contained in the inorganic binder 20 to 94 parts by weight based on 100 parts by weight of the inorganic binder, the bottom ash is 5 to 79 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder. It is preferable to contain.

The polymer-based binder is styrene acrylic emulsion to prevent cracking by increasing the adhesion between cement and fine aggregates, improve the adhesion stability and tensile strength of ethyl acrylate, polymer-based binder to improve the dispersion stability of the polymer binder and increase the adhesive strength Acryl butyl, and zinc ammonium chloride to improve the wet strength and abrasion resistance of the polymeric binder. The polymer-based binder is preferably contained 0.1 to 20 parts by weight based on 100 parts by weight of the inorganic binder in the polymer cement mortar composition, which shows excellent strength and durability as described below. The styrene acrylic emulsion is contained 30 to 70 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder, the ethyl acrylate is 1 to 25 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder. Parts, wherein the acryl butyl is contained in the polymer binder in an amount of 1 to 25 parts by weight based on 100 parts by weight of the polymer binder, and the zinc ammonium chloride is contained in the polymer binder in an amount of 1 parts by weight based on 100 parts by weight of the polymer binder. It is preferable to contain -25 weight part.

The polymer binder may further include polyoxyethylene octylphenyl ether in order to improve the diffusion rate of the polymer binder and to improve the dispersion and storage stability of the polymer binder, and the polyoxyethylene The octyphenyl ether is preferably contained in the polymer binder in an amount of 0.01 to 3 parts by weight based on 100 parts by weight of the polymer binder. In addition, the polymeric binder may further include carboxymethylcellulose for improving the repairability and finishing workability of the mortar, and the carboxymethylcellulose may be 100 weight of the polymeric binder in the polymeric binder. It is preferable to contain 0.1-10 weight part with respect to a part. The polymeric binder may further include a water reducing agent, and the water reducing agent may be contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the polymeric binder. The polymeric binder may further include an antifoaming agent, and the antifoaming agent is preferably contained in an amount of 0.01 to 4 parts by weight based on 100 parts by weight of the polymeric binder.

The weight ratio of the inorganic binder and the fine aggregate contained in the polymer cement mortar composition is preferably 1: 1-5 (inorganic binder: fine aggregate), and the amount of water is 0.1 to 100 parts by weight of the inorganic binder, that is, 100 parts by weight of the inorganic binder. It is effective that it is -15 weight part, Preferably it is about 2-10 weight part. The fine aggregate is preferably used in a ratio of 10 to 30:70 to 90 (steel sand: silica sand) of steel sand having a particle diameter of 0.1 to 2 mm and silica sand having a particle diameter of 2 to 5 mm. Hereinafter, the fine aggregate is used to mean an aggregate having a particle size of 5 mm or less.

Hereinafter, the environmentally friendly polymer cement mortar composition of the present invention will be described in more detail.

The inorganic binder includes cement and bottom ash, and may further include fly ash and / or blast furnace slag.

The cement can usually be Portland cement, and it is preferable to use those specified in KS. The cement is preferably contained 20 to 95 parts by weight based on 100 parts by weight of the inorganic binder. When the content of cement is less than 20 parts by weight, workability, strength and durability may be improved, but dry shrinkage and economic efficiency may be reduced. When the content of cement exceeds 95 parts by weight, dry shrinkage may be less, but strength and durability may be lowered. Can be.

The bottom ash is a material generated from a thermal power plant and has potential hydraulic properties as industrial waste, but the water resistance is small due to high water content of the material itself. The bottom ash is preferably contained 5 to 80 parts by weight based on the inorganic binder. If the bottom ash content is less than 5 parts by weight, the initial strength of the polymer cement mortar composition may be expressed, but the long-term strength and durability may be reduced. If the bottom ash content is more than 80 parts by weight, the workability of the polymer cement mortar composition may be reduced. And long-term strength is improved but may delay the initial strength expression.

The fly ash is used to enhance latent hydraulic properties, long-term strength development and durability. Increasing the weight ratio of fly ash lowers initial strength, but increases long-term strength development and durability. The fly ash is preferably contained 1 to 20 parts by weight based on 100 parts by weight of the inorganic binder, in this case the cement is contained 20 to 94 parts by weight based on 100 parts by weight of the inorganic binder, the bottom ash The inorganic binder is preferably contained 5 to 79 parts by weight based on 100 parts by weight of the inorganic binder. When the content of the fly ash is less than 1 part by weight, the initial strength of the polymer cement mortar composition may be expressed, but the long-term strength and durability may be reduced. When the content of the fly ash is more than 20 parts by weight, the workability of the polymer cement mortar composition may be reduced. And long-term strength is improved but may delay the initial strength expression.

The blast furnace slag is used to improve latent hydraulic properties, long-term strength development and durability. Increasing the weight ratio of blast furnace slag lowers the initial strength, but increases the long-term strength development and durability. The blast furnace slag is preferably contained 1 to 30 parts by weight based on 100 parts by weight of the inorganic binder, in this case the cement is contained 20 to 94 parts by weight based on 100 parts by weight of the inorganic binder, the bottom ash The inorganic binder is preferably contained 5 to 79 parts by weight based on 100 parts by weight of the inorganic binder. When the blast furnace slag content is less than 1 part by weight, the initial strength of the polymer cement mortar composition may be expressed, but the long-term strength and durability may be reduced. When the content of the blast furnace slag exceeds 30 parts by weight, the workability of the polymer cement mortar composition may be reduced. And long-term strength is improved but may delay the initial strength expression.

When the inorganic binder includes cement, bottom ash, fly ash and blast furnace slag, the cement is contained in the inorganic binder in an amount of 20 to 50 parts by weight based on 100 parts by weight of the inorganic binder, and the bottom ash is the inorganic 5 to 50 parts by weight based on 100 parts by weight of the inorganic binder is contained in the binder, the fly ash is contained 1 to 20 parts by weight based on 100 parts by weight of the inorganic binder, and the blast furnace slag is 1 to about 100 parts by weight of the inorganic binder. It is preferable to contain 30 weight part.

The polymeric binder is used to improve the curing time, workability, strength and durability of the composition, and includes styrene acrylic emulsion, ethyl acrylate, acryl butyl and cinnamonium chloride. The polymer binder may further include polyoxyethylene octylphenyl ether, and the polymer binder may further include carboxymethyl cellulose. In addition, the polymeric binder may further include a water reducing agent, and the polymeric binder may further include an antifoaming agent.

The styrene acrylic emulsion is an aqueous solution of an acrylic resin mainly composed of pure acrylic ester monomers, and is used as an adhesive binding agent, and serves as an adhesive when mixing with aggregates including cement, and also has excellent water-resistance effect. It performs the function of expressing the performance, implements leveling and also prevents the cracks. In addition, the styrene acrylic emulsion has excellent adhesive strength and breaking strength after curing, and prevents desorption after adhesion by increasing the strength of cement, and has excellent durability. The styrene acrylic emulsion is preferably contained 30 to 70 parts by weight based on 100 parts by weight of the polymeric binder. When the content of the styrene acrylic emulsion is less than 30 parts by weight, the initial workability is improved but strength and durability may be lowered. When the content of the styrene acrylic emulsion exceeds 70 parts by weight, the strength and durability is improved but the initial workability And economic efficiency may be reduced.

The ethyl acrylate serves to increase the dispersion stability of the polymeric binder and the adhesive strength with the aggregate in the polymer cement mortar composition, it is preferably contained 1 to 25 parts by weight based on 100 parts by weight of the polymeric binder. When the content of the ethyl acrylate is less than 1 part by weight, the initial workability is improved, but the adhesive strength may be lowered. When the content of the ethyl acrylate is more than 25 parts by weight, the strength and durability of the ethyl acrylate may be improved. Dispersion stability may deteriorate and initial workability may deteriorate.

The acryl butyl is used to reduce the viscosity of the polymeric binder and to improve adhesion and tensile strength. It is preferable that 1-25 weight part of said acryl butyl is contained with respect to 100 weight part of polymeric binders. When the content of the acrylic butyl is less than 1 part by weight, material separation does not occur, but workability, adhesion and tensile strength may be reduced. When the content of the acrylic butyl exceeds 25 parts by weight, the adhesion and tensile strength are improved. However, the viscosity may fall and material separation may occur.

The ammonium chloride is used to enhance the wet strength and the abrasion resistance of the polymer binder, and preferably contains 1 to 25 parts by weight based on 100 parts by weight of the polymer binder. When the content of the cyan ammonium chloride is less than 1 part by weight, the initial workability is improved but the effect of improving the wear resistance is insignificant. When the content of the cyan ammonium chloride is more than 25 parts by weight, the wet strength and the wear resistance are improved, but the initial workability is improved. Workability may be reduced.

The polyoxyethylene octyphenyl ether is used to improve the penetration and diffusion rate of the polymer binder, and to improve the dispersion and storage stability of the polymer binder, and contains 0.01 to 3 parts by weight based on 100 parts by weight of the polymer binder. It is preferable to be. When the content of the polyoxyethylene octiphenyl ether is less than 0.01 parts by weight, the effect of improving the dispersion and storage stability of the polymer-based binder is insignificant, and when the content of the polyoxyethylene octiphenyl ether exceeds 3 parts by weight, the polymer-based binder May improve the penetration and diffusion rate of the polymer and improve the dispersion and storage stability of the polymer-based binder, but may lower initial workability.

The carboxymethyl cellulose is used to improve the workability of the mortar and at the same time improve the finishing workability by improving the viscosity. The carboxymethyl cellulose is preferably contained in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the polymeric binder. When the content of the carboxymethyl cellulose is less than 0.1 parts by weight, workability and strength may be improved, but the water holding capacity of the polymer cement mortar composition may be lowered. When the content of the carboxymethyl cellulose is more than 10 parts by weight, water holding capacity Is improved but strength and durability may be degraded.

Styrene acrylic emulsion, ethyl acrylate, acryl butyl, zinc ammonium chloride, polyoxyethylene octyphenyl ether, and carboxymethylcellulose as the polymer binders improve the strength and durability of the composition, and further improve the workability. It is better to use a high performance water reducing agent and an antifoaming agent to reduce the amount of air.

The water reducing agent reduces the water-cement ratio of the polymer cement mortar composition to improve strength and durability. Examples of the water reducing agent include polycarboxylic acid, melamine, and naphthalene-based resins. Melamine-based or naphthalene-based water reducing agents have a slight improvement in strength and durability compared to polycarboxylic acid-based water reducing agents, and have no significant effect of reducing water-cement ratio. Since there is a disadvantage of poor compatibility with the polymer, it is preferable to use a polycarboxylic acid-based water reducing agent. It is preferable that the said water reducing agent is contained 0.01-5 weight part with respect to 100 weight part of polymeric binders.

The antifoaming agent is added to reduce the increase in the amount of air caused by the generation of entrained air of the polymer cement mortar composition, alcohol antifoaming agent, silicone antifoaming agent, fatty acid antifoaming agent, oil antifoaming agent, ester antifoaming agent, oxyalkylene antifoaming agent and the like It may be used alone or in combination, but is not limited thereto, and the type commonly used in the art may be used. Dimethyl silicone oil, polyorganosiloxane, fluorosilicone oil and the like may be used as the silicone antifoaming agent. As the fatty acid-based antifoaming agent, stearic acid, oleic acid or the like can be used. As the oil-based antifoaming agent, kerosene, animal or vegetable oil, castor oil, or the like can be used. The ester antifoaming agent may be used, such as solitol trioleate, glycerol monoricinoleate. As said oxyalkylene antifoamer, polyoxyalkylene, acetylene ether, polyoxyalkylene fatty acid ester, polyoxyalkylene alkylamine, etc. can be used. The alcohol-based antifoaming agent may be used glycol (glycol) and the like. It is preferable that a defoaming agent is contained 0.01-4 weight part with respect to 100 weight part of polymeric binders.

The polymer-based binder is preferably contained 0.1 to 20 parts by weight based on 100 parts by weight of the inorganic binder in the polymer cement mortar composition. When the content of the polymer-based binder is more than 20 parts by weight, the viscosity of the polymer cement mortar composition is too high, the workability (slump) is lowered and the hydration reaction is delayed to lower the early strength expression and the price competitiveness may be lowered. If the content of the polymeric binder is less than 0.1 part by weight, it may be difficult to expect satisfactory strength and durability.

The inorganic pigment is preferably contained 0.1 to 4 parts by weight based on 100 parts by weight of the polymer cement mortar composition. When the polymer cement mortar composition according to the present invention contains an inorganic pigment, it is more preferable in terms of stably expressing a desired color. The inorganic pigment is preferably used at least one material selected from titanium oxide, red iron oxide, yellow iron oxide, chromium oxide (CrO ₃ ), purple iron oxide, black iron oxide and carbon black, whereby red, green, yellow, black Various colors such as blue, white can be realized.

Polymer cement mortar composition according to a preferred embodiment of the present invention can be prepared by the following method.

The inorganic binder and the fine aggregate are mixed in a predetermined ratio and stirred in a forced mixer. The mixing weight ratio of the inorganic binder and the fine aggregate is preferably about 1: 1-5.

The mixture of the inorganic binder and the fine aggregate is further mixed with water and a polymer-based binder in a predetermined ratio and stirred for 1 to 10 minutes. It is effective that the amount of water added is about 0.1 to 15 parts by weight based on the amount of the inorganic binder mixed, that is, 100 parts by weight of the inorganic binder. The polymer-based binder is preferably mixed with 0.1 to 20 parts by weight based on 100 parts by weight of the inorganic binder.

Hereinafter, a method of manufacturing an environmentally friendly water permeable block using a polymer cement mortar composition according to a preferred embodiment of the present invention will be described. The impervious water permeability is used as having both conservative and permeable properties.

The polymer cement mortar composition described above is poured before the mold formwork.

1-30% by weight of white cement, 0.5-10% by weight of blast furnace slag, 0.5-10% by weight of fly ash, 0.5-15% by weight of bottom ash, particle size of 1-5 mm A composition mixed with 60 wt%, 0.1-10 wt% of water, 0.1-10 wt% of the polymeric binder and 0.1-5 wt% of the inorganic pigment is poured to a thickness of 0.5-3 cm. The inorganic pigment is preferably made of at least one material selected from titanium oxide, red iron oxide, yellow iron oxide, chromium oxide (CrO ₃ ), purple iron oxide, black iron oxide, and carbon black.

The poured composition is shaped by vibration and compression.

The molded result is surface finished and dried to produce an eco-friendly permeable block.

Hereinafter, examples of the polymer cement mortar composition according to the present invention will be described in more detail, and the present invention is not limited to the following examples.

≪ Example 1 >

The weight ratio of the inorganic binder and the fine aggregate was 1: 2.5, followed by stirring in a forced mixer. Then, water and a polymer-based binder were further mixed and stirred for 3 minutes to prepare a polymer cement mortar composition.

10 parts by weight of water was incorporated in 100 parts by weight of the inorganic binder, and 10 parts by weight of the polymer-based binder was incorporated in 100 parts by weight of the inorganic binder.

As the inorganic binder, a mixture of 40 parts by weight of cement, 15 parts by weight of blast furnace slag, 40 parts by weight of bottom ash and 5 parts by weight of fly ash was used with respect to 100 parts by weight of inorganic binder.

The polymer-based binder is 60 parts by weight of styrene acrylic emulsion, 15 parts by weight of ethyl acrylate, 10 parts by weight of acrylic butyl, 10 parts by weight of zinc ammonium chloride, 1 part by weight of polyoxyethylene octiphenyl ether, based on 100 parts by weight of polymer-based binder, A mixture of 2 parts by weight of carboxymethyl cellulose, 1 part by weight of a reducing agent and 1 part by weight of an antifoaming agent was used.

<Example 2>

The weight ratio of the inorganic binder and the fine aggregate was 1: 2.5, followed by stirring in a forced mixer. Then, water and a polymer-based binder were further mixed and stirred for 3 minutes to prepare a polymer cement mortar composition.

10 parts by weight of water was incorporated in 100 parts by weight of the inorganic binder, and 10 parts by weight of the polymer-based binder was incorporated in 100 parts by weight of the inorganic binder.

As the inorganic binder, a mixture of 40 parts by weight of cement, 15 parts by weight of blast furnace slag, 40 parts by weight of bottom ash and 5 parts by weight of fly ash was used with respect to 100 parts by weight of inorganic binder.

The polymer-based binder is 55 parts by weight of styrene acrylic emulsion, 15 parts by weight of ethyl acrylate, 15 parts by weight of acrylic butyl, 10 parts by weight of zinc ammonium chloride, 1 part by weight of polyoxyethylene octiphenyl ether, based on 100 parts by weight of polymer-based binder, A mixture of 2 parts by weight of carboxymethyl cellulose, 1 part by weight of a reducing agent and 1 part by weight of an antifoaming agent was used.

<Example 3>

The weight ratio of the inorganic binder and the fine aggregate was 1: 2.5, followed by stirring in a forced mixer. Then, water and a polymer-based binder were further mixed and stirred for 3 minutes to prepare a polymer cement mortar composition.

10 parts by weight of water was incorporated in 100 parts by weight of the inorganic binder, and 10 parts by weight of the polymer-based binder was incorporated in 100 parts by weight of the inorganic binder.

As the inorganic binder, a mixture of 40 parts by weight of cement, 15 parts by weight of blast furnace slag, 40 parts by weight of bottom ash and 5 parts by weight of fly ash was used with respect to 100 parts by weight of inorganic binder.

The polymer binder is 50 parts by weight of styrene acrylic emulsion, 15 parts by weight of ethyl acrylate, 15 parts by weight of acrylic butyl, 15 parts by weight of cinnamonium chloride, 1 part by weight of polyoxyethylene octiphenyl ether, based on 100 parts by weight of polymer-based binder, A mixture of 2 parts by weight of carboxymethyl cellulose, 1 part by weight of a reducing agent and 1 part by weight of an antifoaming agent was used.

In order to compare the physical properties of the polymer cement mortar composition prepared according to Examples 1 to 3 described above, the cement mortar composition and the polymer cement mortar composition, which are currently widely used, are presented as Comparative Examples 1 and 2.

&Lt; Comparative Example 1 &

Usually, the weight ratio of Portland cement and fine aggregate is 1: 2.5, and the mixture is stirred in a forced mixer, and then water is mixed to prepare a cement mortar composition. The water was usually incorporated in an amount of 10 parts by weight based on 100 parts by weight of Portland cement.

Comparative Example 2

Usually, the weight ratio of Portland cement and fine aggregate is 1: 2.5, followed by stirring in a forced mixer, and then water and an acrylic emulsion are mixed to prepare a polymer simeth mortar composition. The water was usually incorporated in an amount of 10 parts by weight based on 100 parts by weight of Portland cement, and the acrylic emulsion was usually incorporated in an amount of 10 parts by weight based on 100 parts by weight of Portland cement.

Hereinafter, test results for comparing and evaluating the physical properties of the polymer cement mortar compositions prepared according to Examples 1 to 3 and the cement mortar compositions prepared according to Comparative Examples 1 and 2 will be described.

&Lt; Test Example 1 >

In order to compare the physical properties of the polymer cement mortar composition prepared according to Examples 1 to 3 of the present invention and the cement mortar composition prepared in Comparative Examples, the polymer cement mortar of Examples 1 to 3 described above The composition and the cement mortar composition prepared in Comparative Example 1 and Comparative Example 2 was subjected to a compressive strength test by KS F 2405 (mortar compressive strength test method), the results are shown in Table 1 below. In addition, the flexural strength test was performed according to KS F 2408 (mortar bending test method), tensile strength test was performed according to KS F 2423 (mortar tensile test method), JIS A 6916 (base material for finishing coating material) By measuring the adhesive strength of the specimen by the results are shown in Table 1 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2
burglar
(kgf / cm2) warp 64 68 72 44 59 compression 411 422 429 389 391 Seal 40 44 50 26 35 adhesion 23 26 27 14 21

As shown in Table 1, the bending, compression, tensile and adhesive strength of the polymer cement mortar composition (Example 1, Example 2 and Example 3) prepared according to the present invention are prepared in Comparative Example 1 and Comparative Example 2 Significantly higher than one cement mortar composition.

It was confirmed that the polymer cement mortar composition prepared according to Examples 1 to 3 of the present invention was superior in strength in comparison with the cement mortar composition prepared in Comparative Examples.

&Lt; Test Example 2 &

The dry shrinkage rate of the polymer cement mortar composition prepared according to Examples 1 to 3 and the cement mortar compositions prepared according to Comparative Examples 1 and 2 were measured by KS F 2424 (test method for changing the length of concrete). The results are shown in Table 2 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Dry Shrinkage (× 10 ^-4 ) 1.0 1.0 1.0 3.8 1.4

As shown in Table 2, the polymer cement mortar composition prepared according to Examples 1 to 3 has a dry shrinkage amount is reduced compared to the cement mortar compositions prepared according to Comparative Example 1 and Comparative Example 2 has an effect of reducing shrinkage Could confirm.

<Test Example 3>

The polymer cement mortar composition prepared according to Examples 1 to 3 and the cement mortar composition prepared according to Comparative Example 1 and Comparative Example 2 were measured according to the method defined in JIS A 1171 (Test Method of Polymer Cement Mortar). The measurement results are shown in Table 3 below. If the absorption rate is high, if the impurities or water penetrates into the concrete, the porosity increases in the concrete, causing a problem of damage to the structure.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Absorption rate (%) 1.4 1.3 1.3 6.4 2.2

As shown in Table 3 above, the polymer cement mortar compositions prepared according to Examples 1 to 3 had lower absorption rates than the cement mortar compositions prepared according to Comparative Examples 1 and 2.

<Test Example 4>

The polymer cement mortar composition prepared according to Examples 1 to 3 and the cement mortar composition prepared according to Comparative Examples 1 and 2 were tested according to JIS A 1171 (Test Method of Polymer Cement Mortar). The results are shown in Table 4 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Chloride ion penetration depth (mm) 1.6 1.5 1.5 6.1 2.3

As shown in Table 4 above, the polymer cement mortar composition prepared according to Examples 1 to 3 showed less chloride ion penetration depth compared to the cement mortar compositions prepared according to Comparative Example 1 and Comparative Example 2 to prevent salt damage. It was confirmed that the resistance is high.

&Lt; Test Example 5 >

The polymer cement mortar composition prepared according to Examples 1 to 3 and the cement mortar composition prepared according to Comparative Examples 1 and 2 were tested according to JIS A 1171 (Test Method of Polymer Cement Mortar). The results are shown in Table 5 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Neutralization Depth (mm) 1.0 0.9 0.9 3.0 1.3

As shown in Table 5 above, the polymer cement mortar composition prepared according to Examples 1 to 3 has a smaller neutralization penetration depth than that of the cement mortar compositions prepared according to Comparative Examples 1 and 2, thereby resisting neutralization. It was confirmed that this is high.

<Test Example 6>

The measurement results of the freeze thaw resistance test of the polymer cement mortar composition prepared according to Examples 1 to 3 and the cement mortar compositions prepared according to Comparative Examples 1 and 2 according to KS F 2456 are shown below. Table 6 shows. Freeze thaw refers to the freezing and melting of the moisture absorbed by the concrete, and when the freeze thaw is repeated, fine cracks are generated in the concrete structure, resulting in a problem of deterioration in durability. Table 6 shows the durability index of each of the Examples and Comparative Examples according to the freeze thaw resistance test.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Durability index 89 91 91 44 87

As shown in Table 6 above, since the polymer cement mortar composition prepared according to Examples 1 to 3 has a much higher durability index than the cement mortar compositions prepared according to Comparative Examples 1 and 2, the durability is improved. It can be seen that.

As mentioned above, although preferred embodiment of this invention was described in detail, this invention is not limited to the said embodiment, A various deformation | transformation by a person of ordinary skill in the art within the scope of the technical idea of this invention is carried out. This is possible.

Claims (7)

In the polymer cement mortar composition comprising an inorganic binder, a polymer binder, fine aggregate and water, the polymer binder is contained in the polymer cement mortar composition 0.1 to 20 parts by weight relative to 100 parts by weight of the inorganic binder, the inorganic binder The mixing weight ratio of the fine aggregate with is 1: 1 to 5, the water is contained in the polymer cement mortar composition 0.1 to 15 parts by weight based on 100 parts by weight of the inorganic binder,
The inorganic binder includes cement and bottom ash,
The polymer-based binder is styrene acrylic emulsion to prevent cracking by increasing the adhesion between cement and fine aggregates, improve the adhesion stability and tensile strength of ethyl acrylate, polymer-based binder to improve the dispersion stability of the polymer binder and increase the adhesive strength Acryl butyl, and zinc ammonium chloride for improving the wet strength and abrasion resistance of the polymer binder, wherein the styrene acrylic emulsion contains 30 to 70 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder. Wherein the ethyl acrylate is contained in the polymer binder in an amount of 1 to 25 parts by weight based on 100 parts by weight of the polymer binder, and the acrylic butyl is in an amount of 1 to 25 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder. Parts by weight, and the zinc ammonium chloride is Meogye respect to 100 parts by weight of the polymeric binder in the binder 1 and environmentally friendly polymer, characterized in that contained 25 parts by weight of cement mortar composition.
According to claim 1, wherein the inorganic binder further comprises a fly ash for improving the latent hydraulic properties, long-term strength and durability, the fly ash is 1 to 20 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder Eco-friendly polymer cement mortar composition, characterized in that it contains.
According to claim 1, wherein the inorganic binder further comprises a blast furnace slag for improving the potential hydraulic properties, long-term strength and durability, the blast furnace slag is 1 to 30 parts by weight based on 100 parts by weight of the inorganic binder in the inorganic binder Eco-friendly polymer cement mortar composition, characterized in that it contains.
The method of claim 1, wherein the polymeric binder further comprises a polyoxyethylene octyphenyl ether to improve the diffusion rate of the polymeric binder and to improve the dispersion and storage stability of the polymeric binder, wherein the polyoxyethylene octy Phenyl ether is an environmentally friendly polymer cement mortar composition, characterized in that 0.01 to 3 parts by weight based on 100 parts by weight of the polymer binder in the polymer binder.
The method of claim 1, wherein the polymeric binder further comprises a carboxymethyl cellulose for improving the water retention and finishing work in the mortar, the carboxymethyl cellulose is the polymer binder in the polymeric binder Eco-friendly polymer cement mortar composition, characterized in that containing 0.1 to 10 parts by weight based on 100 parts by weight.
The method of claim 1, wherein the polymer cement mortar composition further comprises an inorganic pigment, the inorganic pigment is contained 0.1 to 4 parts by weight based on 100 parts by weight of the polymer cement mortar composition, the inorganic pigment is titanium oxide, red iron oxide, An environmentally friendly polymer cement mortar composition comprising one or more materials selected from yellow iron oxide, chromium oxide (CrO ₃ ), purple iron oxide, black iron oxide and carbon black.
Pouring the polymer cement mortar composition of claim 1 into a mold formwork;
1-30% by weight of white cement, 0.5-10% by weight of blast furnace slag, 0.5-10% by weight of fly ash, 0.5-15% by weight of bottom ash, particle size of 1-5 mm Pouring a composition containing 60 wt%, 0.1-10 wt% of water, 0.1-10 wt% of the polymeric binder according to claim 1, and 0.1-5 wt% of the inorganic pigment to a thickness of 0.5-3 cm;
Vibrating and compressing the poured composition to form it; And
A method of manufacturing a water-permeable block comprising the step of surface finishing and drying the molded product to form a water-permeable block.