JPH1018551A - Ceramic tile setting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceramic tile setting method excellent in water and heat resistance by spraying inorganic aggregate such as quartz sand onto the surface of an unhardened waterproof layer formed on a bed and adhering ceramic tiles with an elastic urethane adhesive after hardening. SOLUTION: After liquid moisture hardened elastic urethane resin primer is applied on a bed 1 and hardened, a glass fiber mat is laid thereon to be impregnated with a low viscose unsaturated polyester resin and flattened with an application roller and a debubbling roller to form a FRP waterproof layer 2. The unsaturated polyester resin is applied thereon again and inorganic aggregate 3 formed of NO.5 quartz sand is scattered onto the unhardened surface to be a coarse face. Finally, a liquid moisture hardened urethane resin adhesive 4 is applied onto the inorganic aggregate 3 in a comb shape and ceramic tiles 5 are set thereon. After the adhesive 4 is hardened, cement based joint sealer 6 is filled. In this way, difference in thermal expansion between the bed and the ceramic tile and bending deformation are absorbed by the FRP waterproof layer 2, resulting in reliable adhesive performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a porcelain tiling method using an FRP waterproof layer.

[0002]

2. Description of the Related Art Tile construction methods in architecture include:
The exterior tile is mainly applied by cement mortar (or cement mortar mixed with polymer dispersion). Tile-injected concrete panels that are simultaneously tiled with concrete are also actively manufactured.

[0003] In addition, as an interior tile mounting method, an organic adhesive is mainly used, and an adhesive for ceramic tile standardized by JIS A5548 is mainly composed of a synthetic rubber latex type and a synthetic resin emulsion. Type, epoxy-modified synthetic rubber type latex type, epoxy resin type reaction hardening type, etc. Adhesives are also used in the renovation work with tiles.

[0004]

However, when cement mortar is used, the durability can be expected, but due to the low adhesive strength, the cement mortar is not used due to the difference in thermal expansion between the base material and the porcelain tile over time. If not, there is a risk of falling off. Further, there is a disadvantage that the adhesive layer becomes heavy and its own weight becomes large. Furthermore, construction efficiency is low.

[0005] In addition, when using an organic adhesive, there are problems in the adhesiveness of the base material in a wet state, and the water resistance and heat resistance after bonding.

An object of the present invention is to provide a porcelain tile lining which can absorb the difference in thermal expansion of an adherend and the movement of a frame without requiring a high level of skill in construction, and which is excellent in water resistance and heat resistance. To provide a construction method.

[0007]

According to the present invention, there is provided a porcelain tile laying method characterized in that when a porcelain tile is adhered to a substrate, the porcelain tile is applied with an elastic urethane-based adhesive through an FRP waterproof layer.

The above-mentioned porcelain tile, wherein the FRP waterproof layer is a layer obtained by impregnating a glass fiber mat with an unsaturated polyester resin at a construction site and spraying and attaching inorganic aggregate to an uncured surface. It is a stretching method.

Further, there is provided the porcelain tiling method as described above, wherein the elastic urethane-based adhesive is a one-component moisture-curable elastic urethane resin.

Next, the present invention will be described with reference to the drawings and embodiments.

FIG. 1 is a sectional view showing the construction of a method according to the present invention after construction. To bond the porcelain tile 5 to the base 1,
This is a construction method in which an elastic urethane-based adhesive 4 is used with the RP waterproof layer 2 interposed therebetween.

The FRP waterproofing layer 2 is formed by reinforcing fibers such as glass fiber or synthetic fiber into a felt or mat shape, a non-woven fabric or a woven fabric, and an unsaturated polyester resin, epoxy resin, urethane resin or the like. Known fiber reinforced plastic (FRP) impregnated with a synthetic resin can be applied. Among these, a method of laying a glass fiber mat on the base 1, coating and impregnating with an unsaturated polyester resin, and spraying an inorganic aggregate 3 such as silica sand on the surface of the uncured FRP waterproof layer 2 at the construction site. It is optimal in terms of the impregnation of the fiber with the resin, the strength of the FRP waterproof layer, the chemical resistance, the durability, and the adhesion to the elastic urethane adhesive 4 in the next step.

An elastic urethane adhesive 4 as an adhesive
Is an adhesive having a urethane bond obtained from an isocyanate group and a hydroxyl group in a molecule, and is used in one-pack type or two-pack type. That is, a two-pack type isocyanate / polyol reactive type comprising a combination of a terminal OH group polyol (curing agent) and a polyisocyanate (base agent), or a combination of a terminal NCO group urethane prepolymer (base agent) and a polyol (curing agent). There is glue. There is also a moisture-curable one-component adhesive composed of an NCO-terminated urethane prepolymer synthesized from a polyester polyol or polyether polyol and diisocyanate.
In the present invention, any type is cured at room temperature, and an elastic bonding agent having an elongation of 150 to 1000% after curing is applied. From the viewpoint of ease of use, one-component moisture-curable elastic urethane resin is most suitable.

EXAMPLE 1 A one-component moisture-curable elastic urethane resin primer (Joliace JU-127) was applied to a base 1 made of plywood having a thickness of 15 mm.
0, manufactured by Aika Kogyo Co., Ltd.) at a rate of 0.2 kg / m ² , and after curing, a crow fiber mat of 450 g / m ² per square meter was laid.
About 1.5 kg / m ^{2 of a} low viscosity (about 1000 cps / 25 ° C.) unsaturated polyester resin (Joliace JE-2000, manufactured by Aika Kogyo Co., Ltd.) is impregnated and leveled using a coating roller and a defoaming roller. Then, about 0.3 kg / m ^{2 of} an unsaturated polyester resin was applied again to the surface on which the FRP waterproof layer 2 having a thickness of about 1.5 mm was formed, and the inorganic bone made of No. 5 silica sand was applied to the uncured surface. Material 3 was sprayed at about 1.5 kg / m ² and the surface was roughened with silica sand.

Next, an elastic one-component moisture-curable urethane resin adhesive having an elongation of about 600% after curing (Joliace J
U-1390N, manufactured by Aika Kogyo Co., Ltd.) 4 is applied to the above roughened surface of the silica sand at about 1.5 kg / m ² in a comb shape, and a 8.5 mm thick, 92 mm square and 9 mm joint width porcelain is applied thereon. Tile 5
Stuck. After curing of the adhesive, the joints of the porcelain tile were filled with cement-based jointing material 6 to form a porcelain tiled panel.

Comparative Example 1 In Example 1, instead of the elastic one-part moisture-curable urethane resin adhesive (Joliace JU-1390N), a hard epoxy resin adhesive having an elongation of 3% or less after curing was used. Panels were constructed in the same manner except that Aika Aibon EX-777) was used.

COMPARATIVE EXAMPLE 2 A panel was prepared in the same manner as in Example 1, except that an iron urethane resin adhesive (Joliace JU-1390N) was used instead of a cement mortar to a thickness of about 20 mm.

Next, as shown in FIG. 2, the porcelain tiled panels of Example 1 and Comparative Examples 1 and 2 were set to a length of 600 mm and a width of 300 mm using a test piece having a span of 450 mm.
Bending tests were performed on the center surface tile joints (front surface side) and the center rear surface plywood portion (rear surface side) with loads of 2, 4, 6, 8, and 10 mm, respectively, as shown in FIG. Table 1 shows the results of visually measuring any of no abnormality (0), joint cement cracking (1), breakage of cement mortar layer or adhesive layer (2), and porcelain tile cracking (3).

[0018]

[Table 1]

[0019]

As is evident from Table 1, the porcelain tiled panel constructed with the elastic urethane-based adhesive is resistant to bending deformation load, and the fractured portion is cracked joint cement. Those using hard epoxy adhesives or those constructed with cement mortar are vulnerable to bending and denaturing loads, and the damaged parts are not only joint cracks, but also adhesive layers or cement mortar layers, and even porcelain tiles on the surface It has occurred.

As described above, in the porcelain tiling method of the present invention, the difference in thermal expansion between the base and the porcelain tile and the bending denaturation (strain) are absorbed by the interposed FRP waterproof layer and the elastic urethane-based adhesive. High adhesive performance is obtained.

Therefore, it is useful as a waterproof and fireproof construction method for a veranda, a rooftop, a balcony and the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a configuration after construction of a porcelain tiling method of the present invention.

FIG. 2 is a sectional view of a bending test method of a porcelain tiled panel obtained according to an embodiment of the present invention.

FIG. 3 is a sectional view of a bending test method of a porcelain tiled panel obtained according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 FRP waterproof layer 3 Inorganic aggregate 4 Elastic urethane-based adhesive 5 Porcelain tile 6 Joint material

Claims (3)

[Claims] When bonding a porcelain tile to a substrate,
A porcelain tiled construction method characterized by being constructed with an elastic urethane adhesive with an FRP waterproof layer interposed. 2. The FRP waterproofing layer according to claim 1, wherein the glass fiber mat is impregnated with an unsaturated polyester resin at a construction site, and an inorganic aggregate is dispersed and adhered to the uncured surface. The porcelain tiling method described. 3. The method according to claim 1, wherein the elastic urethane-based adhesive is a one-part moisture-curable elastic urethane resin.