JP2014129208A - Adhesive for tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive for tile capable, while being endowed with a favorable workability, of sufficiently inhibiting such phenomena as drips or deformations of adhesion interfaces and tile exfoliation on tile installing occasions and of inhibiting these phenomena even at low temperatures without hindering the workability.SOLUTION: The provided adhesive for tile is an adhesive for tile including cement, a fine aggregate, and a thickener wherein the fine aggregate is a fine aggregate including at least 5 mass% and no more than 10 mass% of particles having diameters of 150 μm or less. A version of the adhesive for tile including lime sand as the fine aggregate is also provided.

Description

  The present invention relates to a tile adhesive used when a tile is attached to a wall surface or the like.

  Tiles are often applied to the walls of structures. Unlike tiles on the floor surface, tiles attached to the wall or inclined surface of the structure must be resistant to peeling (slipping) and displacement due to their own weight. When not using physical means such as fixing by screwing or the like, it is necessary to use an adhesive having such resistance as chemical sticking means. Adhesives for tiling are roughly classified into organic resin adhesives and adhesives of hydraulic compositions such as cement. Organic resin adhesives are excellent in adhesion when tiles are attached and deformation followability after sticking, but are generally used as cement adhesives in terms of durability such as long-term strength and deterioration over time, heat resistance, and large-scale workability. It is inferior in comparison. On the other hand, in cement-based adhesives, various admixtures / agents are blended as a method for enhancing such resistance. Specifically, using a thickener or a polymer to strengthen the adhesive force when tiled (see, for example, Patent Document 1), or using a rapid hardening agent, alumina cement, or the like to drastically set or harden. It is also disclosed that the adhesive bonded portion after tile attachment is deformed (displaced) or made a hardened body before breaking. (For example, see Patent Document 2.)

  However, if such resistance is continually reinforced, the workability such as the paintability deteriorates and the workability is significantly reduced such that it is difficult to ensure the pot life. As a result, general-purpose construction work such as plastering cannot be used, and there was a problem in terms of practicality. When lightweight aggregate is used frequently for its own weight source, there is a limit in terms of lack of strength and durability. In addition, the displacement and peeling of tiles from the pasting position due to the weight of the pasted tile tends to increase as the setting is performed under a low-temperature environment, and the tendency to increase is slower. In addition, there is no known effective measure for sufficiently suppressing the displacement and peeling of the attached tile.

JP-A-5-147996 Special table 2007-534605 gazette

  The present invention (1) has good workability, (2) can sufficiently suppress phenomena such as sagging and deformation of the adhesive part and tile peeling when tiled, and (3) hinders workability even at low temperatures. It is an object of the present invention to provide a tile adhesive that can suppress the occurrence of such a phenomenon without adversely affecting (4) and has excellent durability.

  As a result of repeated investigations to solve the above problems, the present inventor, when performing a tile using a cement-based adhesive advantageous in terms of durability, a fine aggregate having a specific particle size configuration together with a thickening component. When the cement-based hydraulic composition adhesive used was used, it was found that the problems related to the above (1) to (4) can be solved as a whole, and the present invention was completed.

  That is, this invention is the adhesive agent for tiles represented by following [1]-[5]. [1] A tile adhesive containing cement, fine aggregate and a thickener, wherein the fine aggregate is a fine aggregate having a particle size of 5 to 10% by mass with a particle size of 150 μm or less. A tile adhesive characterized by that. [2] The tile adhesive according to [1], wherein the fine aggregate is composed of particles having a particle size of 2 mm or less. [3] The tile adhesive according to [1] or [2], wherein the fine aggregate is lime sand. [4] The tile adhesive according to any one of [1] to [3], comprising 100 parts by mass of cement, 90 to 130 parts by mass of fine aggregate, and 0.24 to 0.32 parts by mass of a thickener. [5] The tile adhesive according to any one of [1] to [4], wherein a flow value during construction is 165 to 180 mm.

  According to the present invention, a tile adhesive having excellent tensioning performance can be obtained with extremely few restrictions on construction, sufficiently suppressing the phenomenon of tile displacement and peeling after tensioning.

  The tile adhesive of the present invention is an adhesive used when, for example, a tile or a stone plate is stuck on the surface of a structure such as mortar or concrete. The tensioning site suitable for use is not particularly limited, and for example, it can be used on the floor surface in addition to the wall surface and the inclined surface of such a structure. Moreover, the construction method of the tile adhesive of the present invention is not particularly limited, but can be applied regardless of the position and direction of the tile attachment site, and does not require large construction equipment, and the construction cost is low. Therefore, it is more suitable to construct by the plastering method using a fence or the like.

  The tile adhesive of the present invention essentially contains cement. The cement used in the present invention is not particularly limited, and examples thereof include ordinary, early strong, super early strong, moderate heat, low heat, etc. Portland cement, various mixed cements such as blast furnace cement and fly ash cement, alumina cement, eco cement, etc. Special cement can be mentioned, and two or more of these may be used in combination. By using cement as the main binder phase-forming substance, it contributes to the provision of durability because relatively high strength development and deterioration over time are difficult to proceed.

  Moreover, the adhesive for tiles of this invention contains a thickener essential. The thickener is not particularly limited as long as it can be used for mortar and concrete. Preferable examples include those containing cellulose derivatives as an active ingredient. Specific examples include water-soluble cellulose derivatives such as methylcellulose, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, and cellulose sulfate. However, it is not limited to the description example. The content of the thickener is not particularly limited, but preferably 0.24 to 0.32 parts by mass with respect to 100 parts by mass of cement, while ensuring workability and higher adhesion when tiled. And the tile retention after construction is improved.

  Further, the tile adhesive of the present invention essentially contains fine aggregate. The material of the fine aggregate is not particularly limited, and any material that can be used for mortar or concrete may be used. Preferably, the use of lightweight aggregates that are generally fragile in strength is minimized. Specific examples of the fine aggregate that can be used include, but are not limited to, silica sand that is generally widely used. Limestone-based fine aggregate is preferably used because it has good wettability with cement and can easily form a strong and strong adhesive bond layer. As the limestone-based fine aggregate, natural lime sand, crushed particles of limestone, and the like are suitable. For example, calcium carbonate particles refined and synthesized in the chemical industry may be used. It is essential that the fine aggregate used in the present invention has a particle size constitution of 5% by mass to 10% by mass with a particle size of 150 μm or less. By containing and using fine aggregates having such a particle size structure, it is possible to suppress the occurrence of sagging and tile peeling at the time of tile attachment. In addition, for example, at 20 ° C. or higher, of course, condensation / curing generally slows down, so that the sag is easy to increase, and the displacement of the tile from the attachment position tends to increase, for example, even at a low temperature of about 5 ° C. A drooping suppression effect that is comparable to time is manifested. In addition, fine aggregate with a particle size of 150 μm or less and less than 5% by mass has a relatively small specific surface area, and the adhesive area with the hydraulic substance is reduced. Since it is easy, it is not preferable. It is not preferable that the content ratio of the particle size is 150 μm or less exceeds 10% by mass because the workability tends to decrease. More preferably, a fine aggregate having a particle size of 5% by mass to 10% by mass with a particle size of 150 μm or less and a particle size of 2 mm or less is used. By eliminating coarse particles having a particle diameter of more than 2 mm, it is possible to suppress a decrease in the specific surface area of the fine aggregate, and to more easily suppress the occurrence of sagging and tile peeling during tile attachment. Moreover, it is preferable that the adhesive of this invention contains 90-130 mass parts of fine aggregates with respect to 100 mass parts of cement. By setting it as this content, it becomes easy to obtain better workability, and it becomes easier to prevent excessive shrinkage deformation of the bonded portion.

  Moreover, the adhesive agent for tiles of this invention can also contain components other than the above, unless the effect of this invention is lost. As such components, for example, water reducing agents, antifoaming agents, polymer dispersions, re-emulsifying powder resins, shrinkage reducing agents, expansion materials, fibers, setting modifiers, all of which can be used for mortar and concrete, Examples include pozzolanic reactive substances.

  Further, the tile adhesive of the present invention contains the above-mentioned components, and preferably has a flow value of 165 to 180 mm at the time of construction such as application to the surface of the target precursor. . The construction time in this case includes the construction environment, specifically, the temperature when the construction is performed is also considered. For example, when the application is performed at 5 ° C., the flow value at 5 ° C. is 165 to The requirement is 180 mm. The flow value can be measured by a method in accordance with JIS R 5201 “Cement physical test method”. By setting the flow value at the time of construction to 165 to 180 mm, the construction properties become very good, for example, it becomes an adhesive with work properties sufficiently suitable for the plastering method, etc., and is applied to a wall surface or a slope. It becomes easier to prevent the coating agent from dripping or deforming. The method of setting the flow value at the time of construction to 165 to 180 mm is not particularly limited, and may be obtained by appropriately changing the blending ratio of the components for each construction temperature. For example, when the blending ratio of the solid-containing component is made constant, an adhesive having a desired flow value can be obtained relatively easily by changing the amount of water added for each construction temperature. Therefore, the amount of water added is not limited to a specific value.

  The method for producing the tile adhesive of the present invention is not particularly limited. For example, the tile adhesive can be produced by a method generally similar to a general cement-based mortar. As a specific example, in an environment as close as possible to the temperature at the time of construction, about 80% of the used kneading water is put into a kneading container, and then a powder mixture of the above-described blending components is added and kneaded, Furthermore, it can be obtained by kneading while adding the remaining kneading water.

  Hereinafter, the present invention will be described in detail by way of examples, but the present invention is not limited to the examples shown here.

  The materials selected from lime sand (A1 to A10) having the particle size constitution shown in Table 1 and B to E shown below are prepared so as to have the compounding amounts shown in Table 2, and dry mixing is performed. Next, water of the amount shown in Table 1 is poured into a Hobart mixer in an environment of temperatures of about 5 ° C. and 20 ° C., and the dry-mixed mixed powder is added thereto, kneaded for about 3 minutes, and freshly bonded. An agent was prepared.

B: Yamagata cinnabar (particle size composition: no particle size exceeding 2 mm, particle size exceeding 600 μm to 2 mm or less is 35.6% by mass, particle size exceeding 150 μm to 600 mm or less is 57.3% by mass, and particle size is 150 μm or less. 1% by mass)
C: Ordinary Portland cement (manufactured by Taiheiyo Cement Co., Ltd.)
D: Hydroxyethyl cellulose thickener (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: SEB-04T)
E: Ethylene vinyl acetate re-emulsified powder resin (manufactured by Akzo Nobel Co., Ltd., trade name: Erotex MP2050)

  The fresh adhesive was subjected to an evaluation test on the following items (a) to (e) immediately after kneading. The evaluation results are summarized in Table 3.

  (A) Flow value: The adhesive obtained by kneading at 5 ° C. is in a constant temperature room at 5 ° C., and the adhesive obtained by kneading at 20 ° C. is in a constant temperature room at 20 ° C. The flow value was measured by a method in accordance with the provisions of R5201 “Cement physical test method”.

(B) Weight: A fresh adhesive at 20 ° C. was filled into a cylindrical bowl-shaped container (500 cm ³ ) having an inner dimension of about 75 mm in diameter and about 115 mm in height, and the mass was measured. The container mass was subtracted to obtain the unit volume mass (Kg / liter).

  (C) Stretchability: Vertically installed concrete plate with a width of 300mm, a height of 600mm, and a thickness of 50mm, with a commercially available metal hammer, apply a fresh adhesive from bottom to top, flat plate height Those in which the adhesive was stretched to about a half or more of the length were determined as having good heel elongation. In addition, those that were in other situations were judged as “bad”.

  (D) Cutting ability; (c) Influence of adhesive remaining on the hammer when applying the adhesive with a hammer to a thickness of about 5 mm after leveling test and leveling the coated surface Thus, those having a generally smooth and good finished surface were determined as “good”, and those other than that were determined as “bad”.

  (E) Tension sag check test: An adhesive was applied to the upper surface (300 × 300 mm) of a 60 mm thick concrete flat plate placed on a horizontal surface with a commercially available metal hammer, and then commercially available. A two-clad tile (60 × 225 × 10 mm) was pressed against the adhesive-coated surface on a flat plate and further struck and pressed with a mallet. Marks were placed on the upper ends of the tiles that were attached, and the concrete flat plate was stood vertically so that the upper ends of the attached tiles were on the top, and left for about 10 minutes. After leaving, the distance between the position of the mark and the position of the upper end of the tile was measured, and the distance shifted by the tile sag was determined. When the distance was 1.5 mm or less, it was judged that the tile sag was substantially “none”. When the distance exceeds 1.5 mm, the measured distance is indicated. The tension tile sag check test was performed in a room at 5 ° C. and 20 ° C., the test at 20 ° C. was performed at 20 ° C., and the test at 5 ° C. was performed at 5 ° C.

  From the results shown in Table 3, the tile adhesive of the present invention, which was applied at 5 ° C. and 20 ° C., showed almost no displacement of the tile, and the phenomenon of displacement and peeling was sufficiently suppressed. Regardless of this, it can be seen that it has excellent properties such as wrinkle elongation and breakage and has good workability.

Claims (5)

A tile adhesive containing cement, fine aggregate, and a thickener, wherein the fine aggregate is a fine aggregate having a particle size of 5 to 10% by mass with a particle size of 150 μm or less. Tile adhesive. The tile adhesive according to claim 1, wherein the fine aggregate comprises particles having a particle size of 2 mm or less. The tile adhesive according to claim 1 or 2, wherein the fine aggregate is lime sand. The adhesive for tiles in any one of Claims 1-3 containing 100 mass parts of cement, 90-130 mass parts of fine aggregates, and 0.24-0.32 mass parts of thickeners. The tile adhesive according to any one of claims 1 to 4, wherein a flow value during construction is 165 to 180 mm.