KR20120075698A - Functional tile adhesive using elasticity powder - Google Patents

Abstract

PURPOSE: A functional tile adhesive using elastic powder is provided to give elasticity to mortar and increase sad resistance by lightening tile adhesive. CONSTITUTION: A functional tile adhesive using elastic powder comprises 35-45 wt% of cement, 25-40 wt% of silica having 60-100 mesh, 10-20 wt% of silica having 100-200 mesh, 0.2-0.5 wt% of methylcellulose as a thickener, and 0.05-0.3 wt% of starch as a co-thickener. 0.02-0.2 wt% of polycarboxylic acid as a water reducing agent, 0.3-2.0 wt% of fiber, 0.3-1.0 wt% of calcium sulfo aluminate as a promoter, 5-10 wt% of redispersible EVA powder resin, and 5-10 wt% of elastic powder. The cement is one selected from white Portland cement or primary normal Portland cement. The fiber has a minimum 99.6% of the cellulose content. The elastic powder is latex powder having a density of 0. 98g/cm^3.

Description

Functional Tile Adhesive Using Elasticity Powder

The present invention incorporates an elastic powder having elasticity as a tile adhesive to be bonded to a construction site where deformation such as vibration and torsion may occur, such as a high-rise building, thereby improving the deflection resistance and providing elasticity in mortar by lightening the tile adhesive. The present invention relates to a tile adhesive composition for minimizing tile lifting and dropping out by increasing resistance to impact and deformation.

Recently, large scale high-rise projects of more than 100 floors in the world are being planned. Due to the high-rise of these buildings, lightweight materials such as gypsum board, CRC board, lightweight ALC, etc. The stiffness and weight damping capacity are reduced, making it more vulnerable to wind, and the effect of this wind increases the vibration and torsion of the building.

In addition, as the interior construction materials of such high-rise buildings increase as the interior of households, large-scale large-scale tile construction sites are increasing.However, when the existing tile adhesive is used in areas where deformations such as vibration and torsion occur, the tiles are lifted due to tile deformation. Dropouts may occur. However, there is no tile adhesive applicable to these conditions in Korea.

In Korean Patent Publication No. 789104, the tile adhesive of the present invention is 35 to 60% by weight of white Portland cement, 1 to 10% by weight of 100-200 mesh silica, 35 to 60% by weight of 200-300 mesh silica, Filler consisting of 0.3-1.5 wt% methylcellulose, 1-5 wt% cellulose fibers, 40-65 wt% acrylic synthetic resin, 0.05-0.2 wt% preservative, 2-6 wt% thickener , A two-component tile adhesive having excellent cold resistance and elasticity comprising 0.05 to 0.2% by weight of an antifoaming agent, 1 to 6% by weight of an antifreezing agent, 0.1 to 0.5% by weight of a ph regulator, and 30 to 50% by weight of a diluting solvent. ,

Publication No. 10-0972487 discloses 5-30% by weight of white Portland cement, 5-30% by weight of alumina cement, 30-50% by weight of 60-100 mesh silica sand, 15-30% by weight. 100-200 mesh silica sand, 0.3-1.5 wt% methylcellulose, 1-5 wt% cellulose fiber, 3-10 wt% reemulsified powder resin, 3-10 wt% anhydrous gypsum, 0.1 A fast curing tile adhesive comprising a 0.5 wt% curing retardant, a 0.1-0.5 wt% curing accelerator and a 0.1-0.5 wt% ph regulator

Publication No. 10-942358 discloses 35 to 45 weight percent white Portland cement, 30 to 45 weight percent 60 to 100 mesh silica sand, 10 to 25 weight percent 100 to 200 mesh silica sand, 0.3 to 1.5 weight percent High performance tile adhesives incorporating lightweight aggregates composed of methylcellulose, 1-5 weight percent cellulose fibers, 3-10 weight percent remulsifying powder resins, and 3-8 weight percent lightweight aggregates There is,

Korean Laid-Open Patent Publication No. 10-2009-092016 discloses 30 to 45% by weight of white portland cement or gray portland cement, 30 to 40% by weight of inorganic powder, 20 to 30% by weight of silica sand 6, 7, 8 mixture, methyl Filler comprising 1-5% by weight of cellulose and 0.1-0.5% by weight of antifoam, 40-60% by weight of synthetic resin, 0.5-2.0% by weight of silane compound, 2-5% by weight of thickener, 0.1-0.5% by weight of pH regulator, water It consists of a binder comprising 35 to 55% by weight and other additives 0.05 to 0.1% by weight, the interlayer noise preventing tile adhesive prepared by mixing the filler: binder ratio of 100: 30 to 50 is disclosed,

Proceedings of 2008 Fall Conference (Vol.8, No.2, Vol.15); The title, "Adhesive Stability Study of Wall Improvement Floating Method Using Tile Adhesives of Magnetic Tiles with Absorption Rate of 1% or Less," refers to the cementation process using cement, silica sand, water, It can be seen that a technique composed of functional additives is disclosed.

In the case of conventional tile adhesives, in order to maintain adhesiveness, water retention, and workability, methyl cellulose is usually used in an amount of 0.3% by weight or more, which causes a large amount of bubbles in the mortar, and has a problem of deterioration in adhesive strength and strength. In the case of powder resin for imparting, elasticity and light weight in mortar are given to the site where deformation occurs such as vibration and torsion such as high-rise building, and tile dropout is improved by minimizing deflection resistance and influence on external environmental conditions. It aims to solve the problem which causes the problem.

In order to solve the above object, the present invention is an improvement of the domestic patent application No. 10-2008-0109936, the name of the invention tile adhesive and the tile construction method using the same, filed by the present applicant,

35 to 45 wt% white portland cement or any cement selected from one common portland cement, 25 to 40 wt% of 60 to 100 mesh silica sand, 10 to 20 wt% of 100 to 200 mesh silica sand, 0.2 to 0.5 wt% of methyl cellulose, Starch 0.05 ~ 0.3% by weight, polycarboxylic acid sensitizer 0.02-0.2% by weight, 0.3 ~ 2.0% by weight fiber with cellulose content of at least 99.6%, calcium sulfur aluminate accelerator 0.3 ~ 1.0% by weight, re-emulsified EVA powder resin 5 ~ It is a problem solving means to achieve the present invention to provide a functional tile adhesive using an elastic powder composed of 10% by weight, 5 to 10% by weight elastic powder.

According to the present invention, as the water reducing agent is applied, the adhesive force is greatly improved according to the effect of extending the open time by increasing the moisture in the mortar to the surface and reducing the amount of addition for maintaining workability, and elastic powder (latex powder, waste tire rubber powder). ) Improves workability and gives elasticity in mortar due to low water absorption of elastic powder. In addition, the glass transition temperature (Tg.) Of less than 5 ℃ is applied to the re-emulsified EVA powder resin to give adhesion and flexibility. The glass transition temperature is one of the factors that affect the properties of the powder resin as Tg. The higher., The harder, the lower the ductility. Applying a powder resin having a low Tg. Is advantageous to impart ductility of mortar, and resistance to vibration, torsion and external impact compared to conventional domestic tile adhesives. Increase the adhesion strength under poor construction environment conditions by 2 ~ 4 times to increase the tile attachment stability, and additionally give lightness, sag resistance and workability.

In order to solve the technical problem of the present invention, the present invention is any one of cement selected from 35 to 45% by weight of white Portland cement or one common portland cement, 25 to 40% by weight of 60 to 100 mesh silica sand, 100 to 200 mesh silica sand 10 ~ 20% by weight, methylcellulose 0.2-0.5% by weight, starch 0.05-0.3% by weight, polycarboxylic acid reducing agent, 0.02-0.2% by weight, 0.3-2.0% by weight fiber with a cellulose content of at least 99.6%, calcium sulfur aluminate It relates to a functional tile adhesive using an elastic powder composed of 0.3 to 1.0% by weight of accelerator, 5 to 10% by weight of reemulsified EVA powder resin, and 5 to 10% by weight of elastic powder.

Functional tile adhesive composition using an elastic powder according to embodiments of the present invention is a white portland cement or one common portland cement, silica, methyl cellulose, starch auxiliary thickener, water reducing agent, fiber, calcium sulfur aluminate accelerator, ash oil Combustible EVA powder resin, elastic powder and water.

White Portland cement of the present invention KS L 5204, one type of ordinary portland cement is any one selected from KS L 5201 cement, when added to less than 35% by weight of cement content, the overall adhesion may be reduced, 45% by weight If it is added in excess of the elasticity of the adhesive is significantly reduced problem.

The silica sand of the present invention is preferably 4 to 200 mesh (1-8 yarn), preferably 60 to 200 mesh (6-8 yarn) with a small particle size, and 60 to 100 mesh silica sand 25 to 40% by weight, 100 ~ 200mesh silica sand should be applied 10 ~ 20% by weight. It is important to keep the appropriate particle size because the tile adhesive may slip the tile according to the size of the silica sand and there is a decrease in strength.

The thickener and auxiliary thickener of the present invention is to maintain a high viscosity in the adhesive composition to prevent flow from the wall surface of the adherend and to improve the flowability when subjected to external force, methyl cellulose is used as the thickener, and as an auxiliary thickener Starch is used to prevent thickening and moisture evaporation at the same time and to maintain high viscosity in stationary state to prevent sagging of tiles.

Methyl cellulose should be added 0.2 ~ 0.5% by weight to the total weight, if less than 0.2% by weight, the viscosity of the tile slips and the maintenance rate decreases, and if it exceeds 0.5% by weight the viscosity rises too high workability as a tile adhesive It is not suitable.

Auxiliary thickener should be added 0.05-0.3% by weight to the total weight, and is preferable in terms of initial adhesion and workability.

The water reducing agent of the present invention uses a polycarboxylic acid water reducing agent to prevent a decrease in the adhesive strength and the coating film strength due to the use of the elastic powder, and when the water reducing agent is used, it improves affinity with porcelain tiles, Excellent adhesive strength of can be obtained and ultimately excellent adhesive strength and construction workability can be obtained regardless of winter and summer. However, when the excessive amount of the water reducing agent is added, the thixotropic property of the product is lowered, which leads to a tile sagging phenomenon during the construction of the adhesive.

Fiber of the present invention is a fiber having a cellulose content of at least 99.6% can obtain crack resistance, tile deflection resistance, water retention. In order to have proper workability and water retention, a mixing ratio of 0.3 to 2.0% by weight is preferable, and the excessive amount may cause a decrease in strength and workability due to an increase in the amount of addition.

The accelerator of the present invention is calcium sulfur aluminate to apply 0.3 ~ 1.0% by weight to the total weight in order to prevent the lifting and dropping of the tiles that may be generated when the impact and vibration is applied due to the late process before curing after tile construction. desirable.

The powder resin of the present invention is a re-emulsified EVA powder resin, which should have an adhesive strength, flexural strength, and ductility together with cement, and should be added in an amount of 5 to 10% by weight. If it is less than 5% by weight, sufficient adhesion strength and flexural strength cannot be obtained. If it is more than 10% by weight, the slip resistance and the water resistance to water are lowered.

The elastic powder of the present invention uses any one selected from latex powder and waste tire rubber powder, the latex powder is a copolymer of butadiene and acrylonitrile and has an density of 0.98 g / cm 3, and the waste tire rubber powder is 1.0 mm or less. The waste tire rubber powder elastic body is made by cooling and crushing to a particle size, and when the elastic powder is mixed, the ductility and elasticity are imparted together with the powder resin, thereby improving impact resistance.

The mixing amount is preferably 5 to 10% by weight, and less than 5% by weight, it is difficult to obtain elasticity for impact resistance, and when it exceeds 10% by weight, workability decreases and strength decreases.

The invention will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

Example 1

White Portland Cement 40kg, 60-100mesh Silica 35.4kg, 100-200mesh Silica 17.6kg, Methylcellulose 0.2kg, Starch 0.05kg, 0.1kg Polycarboxylic Acid, 0.3kg Fiber with Cellulose Content of at least 99.6%, Calcium Sulfuraluminate 0.35kg, EVA powder resin 6kg powder was mixed to prepare a tile adhesive.

Example 2

White Portland Cement 40kg, 60-100mesh Silica 30.4kg, 100-200mesh Silica 17.6kg, Methylcellulose 0.2kg, Starch 0.05kg, 0.1kg Polycarboxylic Acid, 0.3kg Fiber with Cellulose Content of at least 99.6%, Calcium Sulfuraluminate 0.35kg, EVA powder resin 6kg, latex powder 5kg was mixed to prepare a tile adhesive.

Example 3

 White Portland Cement 40kg, 60-100mesh Silica 25.4kg, 100-200mesh Silica 17.6kg, Methylcellulose 0.2kg, Starch 0.05kg, Polycarboxylic Acid 0.1kg, 0.3kg Fiber with Cellulose Content of at least 99.6%, Calcium Sulfuraluminate 0.35kg, EVA powder resin 6kg, latex powder 10kg was mixed to prepare a tile adhesive.

Example 4

White Portland Cement 40kg, 60-100mesh Silica 25.4kg, 100-200mesh Silica 17.6kg, Methylcellulose 0.2kg, Starch 0.05kg, Polycarboxylic Acid 0.1kg, 0.3kg Fiber with Cellulose Content of at least 99.6%, Calcium Sulfuraluminate 0.35kg, EVA powder resin 6kg, waste tire rubber powder 5kg was mixed to prepare a tile adhesive.

Example 5

White Portland Cement 40kg, 60-100mesh Silica 30.4kg, 100-200mesh Silica 17.6kg, Methylcellulose 0.2kg, Starch 0.05kg, 0.1kg Polycarboxylic Acid, 0.3kg Fiber with Cellulose Content of at least 99.6%, Calcium Sulfuraluminate A tile adhesive was prepared by mixing 0.35 kg, EVA powder resin 6 kg, and waste tire rubber powder 10 kg.

The tile adhesive prepared as described above is any one cement selected from 35 to 45% by weight of white portland cement or one common portland cement, 25 to 40% by weight of 60 to 100 mesh silica, 10 to 20% by weight of 100 to 200mesh silica, 0.2 to 0.5% by weight of methylcellulose as thickener, 0.05 to 0.3% by weight of starch as auxiliary thickener, 0.02 to 0.2% by weight of polycarboxylic acid as a water reducing agent, 0.3 to 2.0% by weight of fiber having a cellulose content of at least 99.6%, calciumsulfur as an accelerator It can be seen that the composition is composed of 0.3 to 1.0% by weight of aluminate, 5 to 10% by weight of reemulsified EVA powder resin, and 5 to 10% by weight of elastic powder.

The elastic powder is a tile adhesive, which is any one compound selected from latex powders having a density of 0.98 g / cm 3 or waste tire rubber powders made by cooling and grinding to a particle size of 1.0 mm or less.

Experimental Example

1. Application

To give elasticity in mortar, 5 and 10% of latex powder and waste tire rubber powder were replaced with silica sand as an elastic powder, and our domestic adhesive A, domestic adhesive B, and overseas for comparative review with existing tile adhesives Comparative tile adhesive C product is tested.

 Application and formulation Example cement Quartz sand Thickener Auxiliary thickener Water reducing agent fiber accelerant Powdered resin Elastic powder Total A B Latex
powder Waste tire
Rubber powder One

40 35.4

17.6

0.2

0.05

0.1

0.3

0.35

6.0 - - 100 2 30.4 5 100 3 25.4 10 100 4 30.4 5 100 5 25.4 10 100
Comparative Example
One


Domestic tile adhesive powder type (hereinafter referred to as 'national powder adhesive A')
Comparative Example
2


Domestic tile adhesive powder type (hereinafter referred to as 'national powder adhesive B')
Comparative Example
3

Overseas Advanced Tile Adhesive (hereinafter referred to as 'Overseas Powder Adhesive C')

2. Material used

A. cement

        Any one cement selected from white Portland cement or one common Portland cement

     I. Silica A

         Dolomite of 600-100 mesh size

     All. Silica B

         Dolomite with 100 ~ 200mesh size

     la. Thickeners and Auxiliary Thickeners

        The thickener is methyl cellulose and the auxiliary thickener is starch, which keeps high viscosity as an adhesive composition to prevent flow from the adherend wall and improves flowability when subjected to external force. It is advantageous because it can prevent the deflection of tiles by maintaining high viscosity in the stopped state.

     hemp. Water reducing agent

        Polycarboxylic acid improves affinity with porcelain tiles to obtain excellent adhesive strength with various coated surfaces. Ultimately, excellent adhesive strength and workability can be obtained regardless of winter or summer.

     bar. fiber

         Fibers with a cellulose content of at least 00.6% can provide crack resistance, tile deflection resistance and water retention.

     four. accelerant

        Calcium Sulfur Aluminate is effective in preventing tile lifting and dropping that can occur when shock and vibration are applied due to the late process before hardening after tile construction.

      Ah. Powdered resin

        Glass transition temperature (Tg.) It is a re-emulsified powder EVA resin with a temperature of less than 5 ℃. It has the role of providing adhesion strength, flexural strength and ductility together with cement.

      character. Latex powder

         A copolymer of butadiene and acrylonitrile, which can improve impact resistance with an elastomer having a density of 0.98 g / cm 3.

      Ah. Waste Tire Rubber Powder

          Waste tire rubber powder made by cooling and grinding to a particle size of 1.0mm or less, which can improve impact resistance.

3. Curing condition ( EN  12004)

     end. Standard Curing: Standard Curing at 20 ± 2 ℃, 65 ± 5% for 28 days

    I. Submerged submerged curing: 20 ± 2 ℃ for 7 days, 65 ± 5% after 21 days 20 ± 2 ℃ submerged curing

All. Heating Curing: 14 days 20 ± 2 ℃, 65 ± 5% Standard Curing, 14 days 70 ℃ Heating Curing

4. Mortar Surface ( KS  L 1593)

The mortar mix is weight ratio of cement 1, standard sand 2, and water cement ratio of 0.65%. The amount of cement, standard sand, and water kneaded once was collected at 520 g of cement, 1,040 g of standard sand, and 338 g of water. The mortar mixing method was based on the method of mixing mortar of KS L 5109. After molding using a metal mold of ㎜ × 20㎜, curing for 24 hours at a temperature of (20 ± 3) ℃ and a humidity of 80% or more, demolding, and curing in water at (20 ± 2) ℃ for 6 days. do. After curing in the curing room for 7 days or more, the lower surface during molding is sufficiently polished using the No. 150 abrasive paper specified in KS L 6003 to make a test substrate.

5. Applied Tiles

A magnetic tile with a water absorption of 0.1% or less, usually a large weight tile of 300 × 600 mm or more.

6. Metrics

Flow, Unit Volume Weight, Open Time, Workability, Tensile Adhesion Strength by Curing Condition, Tensile Adhesion Decay Rate by Repeated Shock and Vibration, Transverse Strain

7. Experimental Results

end. Basic property ( Flow , Unit weight , Open time)

The amount of water added for the application of elastic powder is water ratio to have similar workability of about 20%, and the flow is about 147mm when 5% is applied when 163mm elastic powder is not applied and about 145mm when 10% is applied. The flow rate decreases slightly with the replacement rate.

In the case of elastic powder, the density is about 0.9g / cm3, and when applied as a substitute for silica sand, the density is lower than that of silica sand with a density of 2.65g / cm3, so that the unit volume weight is reduced by about 50 ~ 150g / cm3 as the elastic powder replacement rate increases. Has been shown to be effective, but the open time decreases as the particle size decreases.

 Basic Properties of Elastic Powder Substitution Rate W / B (%) Flow (mm) Unit weight (g / cm 3) opentime (min) One plain 20 163 1500 15-20 2
Latex powder 5 19 148 1456 10 3 10 20 145 1321 10 4
Waste tire
Rubber powder 5 20 146 1463 below 10 5 10 21 144 1340 below 10

I. By curing condition  Tensile Bonding Strength

Curing conditions were carried out in accordance with the standard EN12004, standard curing, submerged curing, heating curing, and the results are as follows.

As a result of measuring tensile adhesion strength according to the elastic powder addition rate, latex powder was reduced by 15% and waste tire rubber powder was reduced by 30% when 5% was added, and 30% of latex powder and waste tire rubber powder were similar by 10%. In case of 5% replacement, latex powder has lower strength reduction rate than waste tire rubber powder, so latex powder has high compatibility with PVC, so the bonding strength with powder resin in mortar is higher than that of waste tire rubber powder. This is because it is high.

As a result of the measurement of tensile adhesive strength by curing condition, all submerged specimens showed less than 5kgf / ㎠ regardless of the adhesion performance in standard curing. It is considered to be vulnerable to moisture as it is used. In the case of heating curing condition, the existing adhesive agent A, B, and foreign adhesive C were 44, 20, and 2% of the adhesive strength reduction. The higher the standard curing tensile adhesive strength, the lower the reduction was. As the replacement rate of elastic powder was increased, it increased even under heating curing conditions. These results indicate that the amount of mixed EVA powder resin increases as the product of high adhesiveness in the existing tile adhesives increases, and the performance of the powder resin is improved when the temperature rises. Therefore, it is determined that the displacement of the tiles and mortar which may be generated during the temperature rise does not significantly affect the temperature change.

 Tensile Adhesion Strength by Curing Condition Tensile Adhesion Strength by Curing Condition (kgf / ㎠) Standard Curing Submerged Submerged Curing Heating curing
Latex powder 0 31.0 4.4 9.8 5 26.3 3.9 13.2 10 20.9 2.7 16.2
Waste tire
Rubber powder 0 27.7 4.0 8.4 5 19.5 3.2 19.2 10 19.7 2.7 17.3
Domestic Adhesive A
9.1
1.6
5.1
Domestic adhesive B
15.9
4.3
12.7
Foreign glue C
22.2
4.7
21.7

All. Tensile Bond Strength Attenuation Rate by Repeated Vibration Shock

In order to measure the tensile adhesive strength attenuated by the actual repetitive vibration shock, after measuring a 200 × 300㎜ size tile was cut to 40 × 40㎜ size to measure the tensile adhesive strength using an electric drill. This is because the repetitive vibration shock is applied to the tile, mortar, and the base surface when cutting with the electric drill, so that the adhesive performance of the tile surface is significantly reduced, so that the adhesive performance under long-term age or poor environment can be estimated.

The table below shows the tensile adhesive strength before and after the vibration impact.The existing tile adhesives domestic adhesive A, domestic adhesive B, and foreign adhesive C have a higher adhesive attenuation rate as the adhesive performance before the vibration impact is higher. In the case of 10% replacement rate, the adhesive decay rate decreased as the replacement rate of the elastic powder increased with the same adhesive performance as before the vibration impact. These results, it is determined that the increase in the elastic powder replacement rate is effective in improving the durability against vibration shock as the elasticity in the mortar increases.

Tensile adhesion strength before and after vibration shock (kgf / ㎠) Decay rate
(%) Before vibration shock Vibration Shock 後
Latex powder 0 23.2 20.7 11.0 5 22.7 20.8 8.1 10 14.0 14.8 2.9
Waste tire
Rubber powder 0 23.2 20.7 11.0 5 22.5 21.2 6.1 10 12.1 13.1 4.8
Domestic Adhesive A
9.8
8.5
13.6
Domestic adhesive B
18.7
15.2
18.8
Foreign glue C
26.7
16.2
39.1

la. Transverse deformation ( transformation ability , DIN12002  standard)

When the elastic powder was replaced, the transverse strain was measured by the DIN 12002 standard to confirm the transformation ability according to the actual replacement rate. The results are shown in the table below.

As a result, when the elastic powder (latex powder, waste tire rubber powder) is applied, the amount of cross deformation is more than two times higher than that of the conventional tile adhesive without elastic powder. In particular, as the replacement rate of the elastic powder is increased, the transverse strain increases, and when the latex powder is applied compared to the waste tire rubber powder, the transverse strain is significantly increased, which has a great effect in imparting the elastic force in the mortar when the elastic powder is applied. Judging.

 Cross Strain by Product Transformation ability (mm)
Latex powder 0 4.8 5 5.6 10 6.2
Waste tire
Rubber powder 0 4.8 5 5.2 10 5.9
Domestic Adhesive A
1.8
Domestic adhesive B
2.3
Domestic Adhesive C
1.2

hemp. Analysis according to the experimental results

The test results for the functional tile adhesive using elastic powder are as follows.

(1) As a result of the measurement of tensile adhesive strength by curing condition, it was found that the adhesive strength decreased as the replacement rate of elastic powder increased. Latex powder showed 50% less strength reduction than waste tire rubber powder. These results indicate that the latex powder has a high compatibility with PVC, and thus the bonding strength with the powdered resin in the mortar is relatively higher than that of the waste tire rubber powder.

(2) As a result of the measurement of tensile adhesive strength by repeated vibration impact, the existing tile adhesive showed that the higher the adhesive performance before the vibration impact, the larger the adhesive attenuation rate. As the elasticity is increased, it is considered to be effective in improving the durability against vibration shock.

(3) As a result of the measurement of transformation ability according to the elastic powder replacement rate, it was found that the cross-strain amount was increased by about 2 times or more when the elastic powder was applied, compared to the conventional domestic adhesive without the elastic powder. Latex powder was compared with the waste tire rubber powder. It is judged that the amount of transverse strain increases when applied, and it is possible to impart elastic force in mortar by applying elastic powder.

(4) It has been confirmed that the durability increases with respect to repeated vibration impacts according to the application of the elastic powder, which is judged to be effective in increasing the resistance to the vibration impact by applying the elastic force in the mortar as the elastic powder is applied.

Claims (3)

In the functional tile adhesive using an elastic powder,
Any cement selected from 35 to 45 wt% white portland cement or one common portland cement, 25 to 40 wt% of 60-100 mesh silica, 10 to 20 wt% of 100-200 mesh silica, 0.2 to 0.5 wt% methylcellulose as thickener %, Starch 0.05 ~ 0.3% by weight, polycarboxylic acid as water-reducing agent, 0.02 ~ 0.2% by weight, 0.3 ~ 2.0% by weight fiber with cellulose content of at least 99.6%, calcium sulfur aluminate 0.3 ~ 1.0% by weight as accelerator , Tile adhesive, characterized in that the re-emulsified EVA powder resin 5 ~ 10% by weight, elastic powder 5 ~ 10% by weight
The tile adhesive according to claim 1, wherein the elastic powder is a latex powder having a density of 0.98 g / cm 3.
The tile adhesive according to claim 1, wherein the elastic powder is a waste tire rubber powder made by cooling and grinding to a particle size of 1.0 mm or less.