JP6462476B2 - Elastic tile base material - Google Patents

Description

The present invention relates to a polymer cement-based elastic tile foundation adjusting material excellent in deformation followability and workability.

  In recent years, tiles are often constructed on the inner walls, floors, indoor floors, etc. of entrances to apartment buildings, and in that case, the adhesive is easy to construct and has excellent deformation followability. Increasing use. As a cement-based elastic adhesive, it is known that a polymer, a lightweight fine aggregate, a normal fine aggregate, a short fiber, and a water retention agent are blended in cement (for example, see Patent Document 1). In addition, an adhesive containing a polyether polymer having a reactive silicon group has been devised as a base conditioner for a concrete frame when an organic elastic adhesive is applied (see, for example, Patent Document 2). However, if the moisture content of the frame concrete is high or if the frame concrete gets wet due to the influence of rainfall before construction, it will be difficult to construct such a foundation conditioner, and the moisture content of the frame concrete will be 8% or less. I have to wait for it. Therefore, the construction period may be extended during periods when there is a lot of precipitation. In addition, a cement-based foundation conditioning material and a construction method have been devised that reduce the Young's modulus and improve deformation followability with lightweight aggregate and polymer against stress due to repeated drying and drying and stress due to repeated expansion and contraction due to temperature change ( For example, see Patent Document 3).

Japanese Patent Application Laid-Open No. 2004-189469 JP 2012-117266 A Japanese Patent Laid-Open No. 2003-119063

  However, this method may not be able to follow large deformations caused by earthquakes that have occurred frequently since the Great East Japan Earthquake.

  In addition, with the recent diversification of construction targets, there is a demand for a base material that can be efficiently constructed over a wide range of surfaces. When inorganic hollow particles such as pearlite and glass beads are used for the lightweight aggregate necessary for weight reduction and deformation followability of the elastic tile base preparation, especially when spraying, etc., when pumping The water pressure in the mortar is taken up by the space between the pearlite and glass beads due to the internal pressure of the pressure hose, causing clogging. As a result, there was a restriction in construction because it hindered spraying construction. In addition, if only a composite foam of ethylene vinyl acetate and calcium carbonate is used for the lightweight aggregate, there is a risk of material separation in the pumping hose due to the difference in specific gravity between the materials used, and there is a risk of clogging. There is a high possibility that the material will be separated, which may hinder construction.

  Therefore, the problem of the present invention is not only excellent in the followability to deformation of the frame concrete, long-term adhesion durability with the frame concrete and tiled mortar, and plastering workability such as trowel workability, spraying construction It is another object of the present invention to provide an elastic tile base preparation that is well suited to the above.

  Therefore, as a result of various studies on the elastic tile foundation adjusting material that can solve the above-mentioned problems, the present inventor has made the cement-based elastic tile foundation adjusting material a fine aggregate composed of a normal aggregate and a lightweight aggregate. Uses an organic resin foamed at a specific foaming rate for lightweight aggregates, blending amount of ordinary fine aggregate and foamed resin fine aggregate, blending amount of polymer, fiber length of polymer fiber generally exhibiting alkali resistance and By adjusting the amount of mixing, etc., it was found that high adhesion strength can be expressed stably for a long time following large deformation caused by an earthquake, and good workability can be obtained, and the present invention has been completed.

  That is, the present invention provides the following [1] to [7].

[1] (A1) 2.36 parts by mass of foamed resin fine aggregate having an expansion ratio of 4.5 to 5.2 parts by mass and (B) an expansion ratio of 9 to 14 times with respect to 100 parts by mass of Portland cement. To 7.23 parts by mass, (C) 68 to 92 parts by mass of ordinary fine aggregate, (D) 6.05 to 7.40 parts by mass of polymer dispersion and / or re-emulsified powder resin in terms of solid content, ( E) An elastic tile base material containing 0.05 to 0.25 parts by mass of a polymer fiber having a fiber length of 10 mm or less.
[2] An elastic tile foundation adjusting material suitable for thick coating with a construction thickness of 5 mm or more, (A1) with respect to 100 parts by mass of Portland cement, (A2) 4.5 to 5.2 parts by mass of an expansion material, (B) 3.02 to 7.23 parts by mass of foamed resin fine aggregate having a foaming rate of 9 to 14 times, (C) 68 to 91 parts by mass of ordinary fine aggregate, (D) polymer dispersion and / or An elastic tile base material containing 6.0 to 7.40 parts by mass of the re-emulsified powder resin in terms of solid content and (E) 0.05 to 0.25 parts by mass of a polymer fiber having a fiber length of 10 mm or less.
[3] An elastic tile foundation adjusting material suitable for thin coating with a construction thickness of less than 5 mm, (A1) with respect to 100 parts by mass of Portland cement, (A2) 4.5 to 5.2 parts by mass of an expansion material, (B) 2.36 to 6.33 parts by mass of foamed resin fine aggregate having a foaming ratio of 9 to 14 times, (C) 71 to 92 parts by mass of ordinary fine aggregate, (D) polymer dispersion and / or An elastic tile base material containing 6.0 to 7.40 parts by mass of the re-emulsified powder resin in terms of solid content and (E) 0.05 to 0.25 parts by mass of a polymer fiber having a fiber length of 10 mm or less.
[4] The elastic tile foundation adjusting material according to any one of [1] to [3], wherein the foamed fine resin aggregate is an ethylene-vinyl acetate copolymer, polypropylene, polystyrene, or polyurethane.
[5] The elastic tile base adjusting material according to any one of [1] to [3], wherein the foamed fine resin aggregate is an ethylene-vinyl acetate copolymer or polypropylene.
[6] The elastic tile base preparation according to any one of [1] to [5], further comprising (G) 0.22 to 0.36 parts by mass of a silane-based water repellent.
[7] The elastic tile base material according to any one of [1] to [6], which does not contain an antifoaming agent.

  By using the elastic tile foundation adjusting material of the present invention, excellent deformation followability can be obtained, and high adhesion strength can be obtained stably for a long period of time with concrete and tiled mortar. Furthermore, it is possible to apply troweling or spraying by pumping by optimally adjusting the foaming ratio and blending amount of foamed resin aggregate, ordinary fine aggregate amount, polymer amount, polymer fiber length and blending amount. become.

It is a figure which shows the outline | summary of a bending strength test. It is a figure which shows the outline | summary of a split tensile strength test. An adhesion test body longitudinal section is shown.

  The elastic tile base preparation of the present invention is (A1) a foamed resin having an expansion material of 4.5 to 5.2 parts by mass and (B) an expansion ratio of 9 to 14 times with respect to 100 parts by mass of Portland cement. 2.36 to 7.23 parts by mass of fine aggregate, (C) 68 to 92 parts by mass of ordinary fine aggregate, (D) 6.05 to 5 in terms of solid content in terms of polymer dispersion and / or re-emulsified powder resin. 7.40 parts by mass, (E) 0.05 to 0.25 parts by mass of a polymer fiber having a fiber length of 10 mm or less is contained.

  In the present invention, the elastic tile foundation adjusting material is an adjusting material that is applied before tiling after surface-treating the frame concrete to be tiled as necessary. Moreover, thick coating is a case where the construction thickness is 5 mm or more, and is generally applied when there is unevenness in the frame concrete. Thin coating is a case where the construction thickness is less than 5 mm, and is generally constructed when there is no unevenness in the frame concrete.

  The elastic tile base preparation of the present invention contains (A1) Portland cement as a curing component. A commercially available Portland cement can be used as the Portland cement of the present invention. For example, ordinary Portland cement, early-strength Portland cement, moderately hot Portland cement, sulfate-resistant Portland cement and the like can be used. In addition, various cements such as blast furnace cement and silica cement, and special cements such as white cement and alumina cement can be used.

  The (A2) expansion material that can be used for the elastic tile base preparation of the present invention is not particularly limited as long as it can be used for mortar and concrete, and quick lime is an active ingredient as a hydrated expansion expansion material. And calcium sulfoaluminate as an active ingredient. By blending and using the expansion material, drying shrinkage is mainly suppressed, and the shape and dimension stability of the construction site can be achieved and the occurrence of shrinkage cracks can be prevented. For example, trade name “Pacific Expan (for structure)” manufactured by Taiheiyo Material Co., Ltd., trade name “Pacific Gypcal” and the like can be mentioned, but the invention is not limited thereto.

  (A2) The amount of the expansion material used is 4.5 to 5.2 parts by mass with respect to 100 parts by mass of Portland cement (A1) regardless of the construction thickness, and 4.5 to 5.1 parts by mass. Preferably, 4.5-5.0 mass parts is more preferable. If the amount is less than 4.5 parts by mass, the shrinkage reduction effect cannot be sufficiently obtained, and cracks may occur. If the amount exceeds 5.2 parts by mass, overexpansion may occur and delayed expansion may occur, which is not appropriate.

  The fine aggregate used in the present invention includes (B) a foamed resin fine aggregate having a foaming ratio of 9 to 14 times, and (C) a normal fine aggregate. The present invention is characterized in that, in addition to the ordinary fine aggregate, (B) a foamed resin fine aggregate having a foaming ratio in a specific range of 9 to 14 times is used.

  (B) The foamed resin fine aggregate having a foaming rate of 9 to 14 times used in the present invention is particularly a hollow particle made of an organic resin foamed with a foaming rate of 9 to 14 times. Although it is not limited, a lightweight fine aggregate made of an organic material having a closed porosity of 40 to 90% by foaming is particularly preferable for imparting heat insulating properties and degeneration. In the present invention, the foaming rate represents the increase ratio of the bulk volume between the grain before foaming and the grain after foaming. When the foaming rate is less than 9 times, the bending strength, compressive strength, tensile strength, and Young's modulus are lowered, and thus the adhesive force with the tiled material is lowered. As a result, the long-term adhesion durability is also unfavorable. In addition, when the foaming ratio exceeds 14 times, the thickness is reduced, so that the meaning of using the foamed resin fine aggregate is lost. As the resin for the foamed resin fine aggregate, desired deformation followability can be easily obtained. For example, ethylene vinyl acetate copolymer, polypropylene, polystyrene, polyurethane, and the like can be mentioned, but they are suitable for a wide range of applications. More preferred are ethylene vinyl acetate copolymer and polypropylene.

  Moreover, the particle diameter of the (B) foamed resin fine aggregate is preferably 0.09 to 3.0 mm from the viewpoint of workability and strength of the mortar used as the fine aggregate. Therefore, the construction thickness should not exceed 20 mm. Further, (B) the foamed resin fine aggregate having a foaming rate of 9 to 14 times used in the present invention has a particle size in the range of 0.09 to 3.0 mm and a bulk specific gravity of 0.07 to 0.12. More preferred. If the bulk specific gravity is too small, the unit volume mass is lowered, a good fresh property and a good curability cannot be obtained, and workability is also lowered. If the bulk specific gravity is too large, the unit volume mass becomes too large, and the strength development is also increased. For this reason, the deformation followability is lowered. Moreover, workability will fall and it will become easy to sag.

  (B) The amount of the foamed resin fine aggregate used is 2.36 to 7.23 parts by mass with respect to 100 parts by mass of (A1) Portland cement. If it is less than 2.36 parts by mass, the static elastic modulus is increased and the deformation followability is lowered. When it exceeds 7.23 parts by mass, the bending strength and the adhesion strength between the concrete and the tiled material are lowered.

(B) When the coating amount of the foamed resin fine aggregate is 5 mm or more thick, (A1) 3.02 to 7.23 parts by mass is preferable with respect to Portland cement, more preferably 4.00 to 7.7. 14 parts by mass, and more preferably 4.34 to 6.00 parts by mass.
(B) The amount of the foamed resin fine aggregate is preferably 2.36 to 6.33 parts by mass, more preferably 2.36 to the (A1) Portland cement when thinly applied with a construction thickness of less than 5 mm. 5.78 parts by mass, and more preferably 3.28-5.50 parts by mass.

  For lightweight aggregates, the use of foamed inorganic particles such as pearlite, glass beads, etc. is not suitable in terms of construction by pumping and spraying for use as a tile base material. In particular, there is a possibility that the pumping pipe and the outlet of the spraying device are blocked.

(C) Examples of ordinary fine aggregates include lime sand, quartz sand, cold water stone, river sand, land sand, and crushed sand. (C) The particle size of the ordinary fine aggregate is preferably 1.2 to 0.045 mm. The coarse particle ratio is preferably 1.4 to 1.9. (C) The amount of ordinary fine aggregate is 68 to 92 parts by mass with respect to 100 parts by mass of (A1) Portland cement, regardless of the construction thickness. If it is less than 68 mass parts, the intensity | strength falls and there is no mixed effect. When it exceeds 92 parts by mass, the static elastic modulus of the elastic tile base preparation of the present invention is increased, and the deformation followability is lowered.
In the case of thickening the construction thickness of 5 mm or more, 68 to 91 parts by mass is preferable with respect to 100 parts by mass of (A1) cement, 75 to 86 parts by mass is more preferable, and 75 to 83 parts by mass is more preferable.
When thinly applying less than 5 mm, the (C) ordinary fine aggregate is preferably 71 to 92 parts by mass, more preferably 75 to 86 parts by mass, and 75 to 83 parts per 100 parts by mass of (A1) cement. Part by mass is more preferable.

  As the polymer (D) used in the present invention, a re-emulsifying powder resin and / or a polymer dispersion can be used. As the re-emulsifying powder resin, those defined in JIS A 6203 can be used, and as the polymer dispersion, those similarly defined in JIS A 6203 can be used. That is, as the re-emulsifying powder resin, a powdery resin mainly composed of ethylene vinyl acetate, vinyl acetate / vinyl versatate, vinyl acetate / vinyl versatate / acrylic acid ester, polyacrylic acid ester, etc. is used. can do. Moreover, the manufacturing method of re-emulsification type powder resin is not limited, You may manufacture by any manufacturing methods, such as a pulverization method and a blocking prevention method. Further, as the polymer dispersion, a resin mainly composed of ethylene vinyl acetate, polyacrylic acid ester, styrene butadiene, or the like can be used. Two or more of these polymers can be used in combination.

  (D) The amount of the polymer dispersion and the re-emulsified powder resin is 6.05 to 7.40 parts by mass in terms of solid content with respect to 100 parts by mass of (A1) Portland cement, regardless of the construction thickness. Preferably it is 6.10-7.20 mass parts, More preferably, it is 6.20-6.67 mass parts. If the amount is less than 6.05 parts by mass, the amount of displacement at the time of breakage is reduced, so that good deformation followability cannot be obtained. If the amount exceeds 7.40 parts by mass, the viscosity increases and the workability decreases.

  The (E) polymer fiber that can be used in the present invention includes a short fiber and a convergent type, but both can be used. As the organic fiber, nylon, vinylon, polypropylene, polyester, acrylic and the like can be used, and two or more kinds can be used in combination.

  Use of polymer fibers having a fiber length of 10 mm or less is effective in order to simultaneously improve the workability such as prevention of sagging in addition to deformation followability. When the fiber length exceeds 10 mm, the bending strength can be improved, but the adhesion to the mortar is increased, the amount of deformation at breakage is reduced, and the strain at breakage is reduced, which does not contribute to improvement in deformation followability. Therefore, it is not preferable.

  The blending amount of the (E) polymer fiber that can be used in the present invention is required to be 0.05 to 0.25 parts by mass with respect to 100 parts by mass of (A) cement, and more preferably 0.10 to 0.17 parts by mass. preferable. If the amount is less than 0.05 parts by mass, the mixing effect is not obtained. If the amount exceeds 0.25 parts by mass, the workability of the iron is lowered, and the amount of fibers per unit volume is excessive, so that the adhesion strength is lowered.

  In the elastic tile base preparation of the present invention, (F) a water retention agent can be blended in order to prevent drying of the elastic tile base preparation after construction and obtain good workability. (F) As a water retention agent, a cellulose derivative is preferable. Any cellulose derivative may be used as long as it is soluble in water, for example, water-soluble cellulose derivatives such as methylcellulose, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, and cellulose sulfate. Can be mentioned. Among these, methyl cellulose, hydroxypropyl methyl cellulose, and hydroxyethyl methyl cellulose are preferable.

  (F) As for the compounding quantity of a water retention agent, 0.11-0.27 mass part is preferable with respect to 100 mass parts of (A1) Portland cement. By mix | blending a water retention agent in this range, drying of the elastic tile base | substrate adjustment material after construction can be prevented, and appropriate workability is obtained.

In the case of thick coating with a construction thickness of 5 mm or more, the blending amount of (F) water retention agent is preferably 0.11 to 0.21 parts by mass, and 0.11 to 0.20 with respect to 100 parts by mass of (A1) cement. A mass part is more preferable and 0.15-0.20 mass part is further more preferable.
In the case of thin coating with a construction thickness of less than 5 mm, the blending amount of the water retention agent (F) is preferably 0.23 to 0.27 parts by mass, and 0.24 to 0.27 with respect to 100 parts by mass of the cement (A1). Part by mass is more preferable.

  In the elastic tile base preparation of the present invention, (G) a water repellent may be used for the purpose of imparting water repellency to the construction surface. The (G) water repellent that can be used in the present invention is preferably a silane compound that is mixed with cement mortar and becomes reactive silanol under high alkaline conditions. For example, organic silane, polysilane and the like. Specific examples include trade name “Seal 80” manufactured by Akzo Nobel Co., Ltd., but are not limited to the description examples. The surface of reactive silanol is modified to be hydrophobic by crosslinking between silanol groups or reaction with an inorganic compound. Therefore, the silane water repellent has good kneading properties, and the elastic tile base preparation of the present invention exhibits appropriate water repellency after curing.

  (G) The blending amount of the water repellent is preferably 0.22 to 0.36 parts by mass with respect to 100 parts by mass of (A1) Portland cement from the viewpoint of imparting water repellency and economy.

  It is not preferable to add an antifoaming agent to the elastic tile base preparation of the present invention. Antifoaming agents are classified into a silicone type and a fatty acid type, and have an antifoaming effect and a water repellent effect obtained in association therewith. When an antifoaming agent is mixed, the surface layer portion after curing exhibits more water repellency than necessary, and thus the adhesion of the first layer and the second layer decreases when it is repeatedly applied. Therefore, it is not preferable to mix an antifoaming agent, but if it is used in combination with a water repellent, the water repellent property at the coating interface and the surface layer portion is further increased, and thus the adhesive force is reduced.

  The amount of kneading water of the elastic tile base preparation of the present invention is preferably 51 to 63% in terms of water cement, and when thicker than 5 mm in construction thickness, it is preferably 52 to 63% in terms of water cement and construction thickness of 5 mm. In the case of performing thin coating less than 51%, the water cement ratio is preferably 51 to 63%. More specifically, when applying the elastic tile foundation adjusting material of the present invention with a gold trowel having a thickness of 5 mm or more, the water-cement ratio is preferably 51 to 63% in terms of kneading property, workability and the like. When applying the elastic tile base preparation of the present invention to a thickness of 5 mm or more by spraying, the water-cement ratio is preferably 52 to 63% from the viewpoint of kneading and pumpability. When applying the elastic tile base preparation of the present invention to a construction thickness of less than 5 mm with a gold trowel, the water-cement ratio is preferably 51 to 63% in terms of kneading and construction properties. When the elastic tile base preparation of the present invention is applied to a thickness of less than 5 mm by spraying, the water-cement ratio is preferably 51 to 63% from the viewpoint of kneading and pumping properties.

  The consistency for efficiently exhibiting the performance of the elastic tile foundation adjusting material of the present invention is preferably a flow value of 170 to 190 mm. If the flow value is within this range, the ironing workability and spraying properties are good, the adhesion to the concrete is good, there is no sag, thickening and thinning are possible, and the construction efficiency is high. It is good. Moreover, when ensuring favorable construction workability | operativity, it is preferable to adjust the unit volume mass in the fresh state of a cement-type foundation | substrate regulator to 1.3-1.65. If the base material whose unit volume mass is too small is used to adjust the tile base, there is a possibility that sufficient adhesion strength may not be obtained, and if used for the paint base, the amount of lightweight aggregate is large. A smooth finished surface cannot be obtained, and pinholes may occur. Therefore, in order to use it for the adjustment of the coating base, a ironing material for smoothing the surface is required, which causes a decrease in construction efficiency and an increase in manufacturing cost. In addition, the base material having an excessively large unit volume mass is difficult to be thickly coated and has a high Young's modulus. Therefore, there is a possibility that high deformation followability cannot be obtained.

  The manufacturing method of the elastic tile base preparation of the present invention is not particularly limited, and can be generally manufactured by a method substantially similar to cement mortar and cement paste. For example, it can be easily obtained simply by putting the compounding material into a commercially available mortar mixer and kneading as appropriate.

  EXAMPLES Next, an Example is given and this invention is demonstrated in detail.

Examples 1-24 and Comparative Examples 31-52
The elastic tile base material was manufactured using the materials shown in Table 1 and the formulations shown in Table 11, Table 13, Table 15, and Table 17.

  Using the obtained elastic tile base material, fresh properties, curable properties, iron workability, and spray properties were evaluated. These evaluation methods are shown below, and the evaluation results are shown in Table 12, Table 14, Table 16, and Table 18.

<Confirmation of fresh properties>
Each test was conducted in a 20 ° C. test room.
1-1. Flow test Measured according to JIS R5201.
1-2. Measurement of unit volume mass It measured by JISA1171 using a 500 mL stainless steel container.

<Fresh properties evaluation criteria>
The fresh properties need to have excellent iron workability and spraying properties when constructed at the realization site as a tile base material. The evaluation criteria for each test item are as follows. Table 2 shows the evaluation criteria, and Table 3 shows the overall evaluation criteria.

<Confirmation of curing properties>
Each test was conducted in a 20 ° C. test room.
2-1. Bending Strength Test Using a 4 × 4 × 16 cm specimen prepared according to JIS A1171, a bending strength test was carried out at a constant deflection of 0.5 mm / min at a material age of 28 days. In the test, n = 3, and the average value was the test value.

  The loading was a centralized loading as shown in FIG.

2-2. Compressive strength test A compressive strength test was carried out at a constant deflection of 0.5 mm / min using a specimen after the bending strength test was completed at 28 days of age. In the test, n = 6, and the average value was the test value.

2-3. Split Tensile Strength Test Using a φ5 × 10 cm specimen prepared according to JIS A1171, a split tensile strength test was carried out at a constant deflection of 0.5 mm / min at a material age of 28 days. Further, a strain gauge was stretched at the position shown in FIG. 2, and the strain at break was measured. Table 8 shows the split tensile strength and the evaluation criteria at break.

2-4. Measurement of static elastic modulus Φ5 × 10cm specimens of each sample prepared according to JISA 1171 were JIS 28 days old.
The static elastic modulus was measured by 1149. The test was conducted with n = 3, and the average value was taken as the test value.

2-5. Adhesion test Each sample was applied in a thickness of 5 mm using a 70 × 70 × 20 mm mortar plate coated with 150 g / m ² of a 5 times solution of Taiheiyo Material Co., Ltd. trade name Taiheiyo Tofucon E manufactured by Taiheiyo Material Co., Ltd. according to JIS A6916CM-2. Curing was performed up to the age of 28 days with standard curing, and the adhesion strength was measured. The test was conducted with n = 3, and the average value was taken as the test value. FIG. 3 shows a longitudinal sectional view of the test body.

<Evaluation criteria for curing properties>
Table 4 shows the evaluation criteria of the curing properties.

<Comprehensive evaluation criteria for curing properties>
Table 5 shows the overall evaluation criteria for the curing properties.

<Confirmation of iron workability>
Evaluation test of trowel workability Each sample was applied to a 450 × 900 × 60 mm concrete plate in a range of 4 mm and 8 mm thickness in a range of 400 × 450 mm with a gold trowel in a 20 ° C. test room, and the trowel workability was evaluated. Table 6 shows the evaluation criteria.

Comprehensive evaluation Table 7 shows the comprehensive evaluation criteria for iron workability.

<Confirmation of spray properties>
The sample kneaded with a 100 L mortar mixer was pumped by 20 m using a mortar pump with a discharge rate of 8 to 12 L / min. Two samples of structural plywood of 900 × 1800 × 12 mm were connected to the pressure-fed sample with a spray nozzle connected with a compressor to form a wall of 1800 × 1800 × 12 mm. The pumping performance and spraying properties were confirmed. The time when continuous spraying was possible, the spraying thickness, and the presence or absence of sagging were confirmed. The spraying thickness was 4 mm and 8 mm, and the evaluation criteria are shown in Table 8.

Comprehensive evaluation Table 9 shows the comprehensive evaluation criteria for spray properties.

<Overall evaluation>
Table 10 shows all the comprehensive evaluation criteria in consideration of the physical property test result, the overall evaluation result of the iron workability, and the comprehensive evaluation result of the spray property.

Claims (7)

  (A1) With respect to 100 parts by mass of Portland cement, (A2) 4.5 to 5.2 parts by mass of an expandable material and (B) a foamed resin fine aggregate having an expansion rate of 9 to 14 times 2.36 to 7. 23 parts by mass, (C) 68 to 92 parts by mass of ordinary fine aggregate, (D) 6.05 to 7.40 parts by mass of polymer dispersion and / or re-emulsified powder resin in terms of solid content, (E) fiber An elastic tile base preparation containing 0.05 to 0.25 parts by mass of a polymer fiber having a length of 10 mm or less.   It is an elastic tile base material suitable for thick coating with an enforcement thickness of 5 mm or more, and (A2) expand material is 4.5 to 5.2 parts by mass with respect to 100 parts by mass of Portland cement (B) foaming 3.02 to 7.23 parts by mass of foamed resin fine aggregate having a rate of 9 to 14 times, (C) 68 to 91 parts by mass of ordinary fine aggregate, (D) polymer dispersion and / or re-emulsified powder resin A base material for adjusting an elastic tile, containing 6.05 to 7.40 parts by mass in terms of solid content and (E) 0.05 to 0.25 parts by mass of a polymer fiber having a fiber length of 10 mm or less.   An elastic tile foundation adjusting material suitable for thin coating with a construction thickness of less than 5 mm, (A1) with respect to 100 parts by mass of Portland cement, (A2) 4.5 to 5.2 parts by mass of expansion material, (B) 2.36 to 6.33 parts by mass of foamed resin fine aggregate having a foaming rate of 9 to 14 times, (C) 71 to 92 parts by mass of ordinary fine aggregate, (D) polymer dispersion and / or re-emulsified powder An elastic tile foundation adjusting material containing 6.05 to 7.40 parts by mass of resin in terms of solid content and (E) 0.05 to 0.25 parts by mass of a polymer fiber having a fiber length of 10 mm or less.   The elastic tile base material according to any one of claims 1 to 3, wherein the foamed fine resin aggregate is an ethylene-vinyl acetate copolymer, polypropylene, polystyrene, or polyurethane.   The elastic tile base material according to any one of claims 1 to 3, wherein the foamed fine resin aggregate is an ethylene-vinyl acetate copolymer or polypropylene.   Furthermore, (G) The tile elastic foundation | substrate adjustment material of any one of Claims 1-5 which contains 0.22-0.36 mass part of silane type water repellents.   The elastic tile base material according to any one of claims 1 to 6, wherein the elastic tile base material does not contain an antifoaming agent.

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