JP2000281414A - Adhesive for building foundation and wall structure of building - Google Patents

Abstract

(57) [Summary] [Problem] To attach a finishing material such as a tile to the surface of a heat insulating plate made of foamed styrene or the like. The base material (adhesive layer) of the finishing material is made thin, and a structure having waterproofness and flexibility is provided. A vinyl acetate water-soluble acrylic resin (35).
Wt.), Sand (about 65 wt.%) And cement are mixed and stirred to produce an adhesive for building base. Concrete wall (body) to which heat insulating plates 1 and 1 are attached and attached (a)
On the surface 1a of the heat insulating plate 1 is applied an adhesive for building foundation having a thickness of 3 to
An adhesive layer 4 is formed by coating about 5 mm (b). continue,
The tiles 5, 5 are pressed and bonded to the adhesive layer 4, and the joints 6 are filled with the joint material to form the wall structure 7 (c).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall structure of a building for securely attaching a finishing material such as a tile to the surface of a resin-based heat insulating plate such as foamed styrene attached to the surface of a wall frame. And an adhesive for architectural bases used for the same.

[0002]

2. Description of the Related Art Conventionally, for heat insulation on a concrete wall,
By attaching a resin insulation board such as foamed styrene to the inside of a temporary frame for concrete molding, or using it as a driving form for concrete molding, by casting concrete,
A resin insulation board was installed on the concrete wall surface.

In this case, the surface on which the resin heat insulating plate is fixed,
When a finishing material is applied, a base board is fixed to a resin heat insulating board or to concrete penetrating the resin insulating board, and a finishing material such as a tile is applied to the base board.

[0004]

When the above-mentioned conventional base board is used, there has been a problem that the thickness of the wall is increased. In recent years, for the purpose of preventing dew condensation on the indoor side, so-called external heat insulation, in which a heat insulating plate is constructed outside a concrete wall, is being adopted.In this case, when attaching a finishing material to the outer wall surface, particularly this method is used. The problem becomes noticeable.

[0005]

However, the present invention has solved the above-mentioned problems by providing an adhesive layer made of a water-soluble acrylic resin-based mortar and attaching a finishing material.

That is, the present invention relates to a water-soluble acrylic resin 30.
An adhesive for building bases, comprising a resin mortar formed by mixing 60 to 70% by weight of sand with 40 to 70% by weight of sand. In addition, the water-soluble acrylic resin is a polymer compound containing a vinyl acetate-based monomer, and one or both of titanium dioxide and calcium carbonate are added to the resin mortar, and the mixture is stirred and mixed. It is a base adhesive.

In another aspect of the present invention, a resin-based heat insulating plate is attached to a surface of a wall frame of a building, and a water-soluble acrylic resin-based mortar adhesive is provided on the surface of the resin-based heat insulating plate. It is a wall structure of a building, wherein a finishing material is attached via an applied adhesive layer. The building base adhesive is a wall structure of a building characterized by mixing sand, a water-soluble acrylic resin, and water. Further, the adhesive for building base has a wall structure of a building, characterized in that one or both of titanium dioxide and calcium carbonate are added and mixed with stirring.

Further, the present invention provides an adhesive made by adding a styrene foam insulating plate to the surface of a wall structure of a building and mixing sand, a water-soluble acrylic resin and water on the surface of the insulating plate. In a wall structure with a finishing material attached through a layer,
The adhesive layer contains 30 to 40% by weight of a water-soluble acrylic resin, 60 to 70% by weight of sand, titanium dioxide powder and / or
Alternatively, the building wall structure is formed by mixing calcium carbonate powder.

The finishing material mentioned above refers to ceramic tiles made of porcelain and ceramics, various types of stone plates, cement-based plates, and the like.

The above-mentioned resin-based heat insulating plate refers to a foamed resin-based plate-like heat insulating material generally used as a heat insulating material (heat insulating material), such as a foamed styrene or calcium asbestos silicate plate. Further, the heat insulating plate can be attached to either the indoor side or the outdoor side of the wall frame.

[0011] In addition, according to one method, a heat insulating plate is added to a wall frame when a heat insulating plate is used as a driving form in advance, or when a heat insulating plate is placed inside another form, concrete is added. It is cast and formed integrally with the concrete body.
In another method, a heat insulating plate is attached to the surface of the solidified concrete body with various adhesives and attached.

The acrylic resin is, for example, a polymer compound containing a vinyl acetate monomer [Viny
l Acetate Acrylate Copolymer Latex].

If the water-soluble acrylic resin “30 to 40% by weight” in the above-mentioned components of the water-soluble acrylic resin mortar is less than 30% by weight, the adhesive strength of the water-soluble acrylic resin to sand cannot be secured. If the content is more than weight%, waste increases, and the mixing ratio is adjusted in relation to sand.
In order to increase the overall fluidity of the building base adhesive, the amount of the water-soluble acrylic resin can be reduced and water can be appropriately added to adjust.

[0014]

DETAILED DESCRIPTION OF THE INVENTION Sand (about 65% by weight) and cement are mixed with vinyl acetate-based water-soluble acrylic resin (about 35% by weight) and stirred to form a water-soluble acrylic resin mortar (adhesive for building base). Agent).

A water-soluble acrylic resin having a thickness of 3 to 5 m is provided on the surface 1a of the heat insulating plate 1 of a concrete wall (body) (FIG. 1A) to which the heat insulating plates 1 and 1 made of foamed styrene are adhered.
m is applied to form an adhesive layer 4 (FIG. 1B). Subsequently, the tiles 5, 5 are pressed and bonded to the adhesive layer 4, and the joints 6 are filled with the joint material to form the wall structure 7 (FIG. 1).
(C)).

[0016]

[Embodiment 1] The adhesive for building base of the present invention will be described.

The water-soluble acrylic resin mortar (adhesive for building base) used in the embodiment of the present invention is a water-soluble acrylic resin of about 35% by weight. Sand having a particle size of about 0.50 to 0.71 mm and about 65% by weight of sand are mixed. To produce. As the water-soluble acrylic resin, a polymer compound containing a vinyl acetate monomer [Vi
nyl Acetate Acrylate Copolymer Latex].

The above-mentioned water-soluble acrylic resin mortar is usually sealed in units of 15 liters (about 28 kg) per can, and the required amount is carried to the construction site.

Next, at the construction site, 5 to 10% is added to one can (15 liters) of water-soluble acrylic resin mortar.
A certain amount of cement is directly put in a can, or a water-soluble acrylic resin mortar and cement are put in a separate container and mixed by stirring to form a base adhesive of the present invention. At this time, if necessary, an appropriate amount of water can be added to adjust the viscosity.

When water is 1, the specific gravity of the water-soluble acrylic resin mortar is about 1.1 and that of the conventional mortar is about 2, so that the weight can be reduced, which is advantageous during transportation and use.

This base adhesive can exhibit the required adhesive strength when applied thinly, and when dried, solidifies like cement mortar.
Cracks are less likely to occur and the waterproofness is excellent. Therefore, it can be used in a portion where cement mortar has been used as a base adhesive. In addition, since a water-soluble resin is used as a base, it is possible to bond a resin-based plate, in particular, a plate material such as styrene foam, and a tile or various boards to styrene foam, for which cement mortar could not be used conventionally. Also, concrete exterior walls, slabs,
It can also be used for ground adjustment, cracking and damage treatment of siding outer walls and the like.

[0022]

Embodiment 2 An embodiment of a wall structure according to the present invention will be described with reference to the drawings. In this embodiment, a tile is installed on the outer surface of a wall.

Using the insulating plates 1 and 1 made of Styrofoam as a driving form, concrete is cast into the insulating plates 1 and 1. After the concrete solidification occurs, a concrete wall (body) in which the heat insulating plates 1 and 1 are attached to both surfaces of the concrete 2 is formed (FIG. 1A). In this case, the heat insulating plate 1 used as a driving form is reinforced so that both ends of the support member 3 are embedded between the heat insulating plates 1 and 1 to withstand the lateral pressure of concrete and maintain the distance between the heat insulating plates 1 and 1. Have been.

Next, the tile bonding surface (surface) of the heat insulating plate
Remove mud and oil etc. and clean. Then, the heat insulating plate 1
The base adhesive is applied to the bonding surface (surface) 1a of
Ratio of about 2 liters / m ² (thickness about 3 to 5 mm)
Then, apply with a "trowel" to form an adhesive layer 4 (FIG. 1).
(B)).

Subsequently, a tile (thickness: 10 m) is formed on the adhesive layer.
m) to adhere. Next, the joint material is filled in the joint portions 6 between the tiles 5 and 5 to form the wall structure 7 of the present invention (FIG. 1C).

When the same amount of sand is mixed in the adhesive layer 4 as compared with the conventional cement mortar, the specific gravity is reduced to about half, and a thin coating is possible. Further, since the adhesive layer 4 has a certain degree of flexibility, even if the tiles 5 and 5 expand and contract, the tiles 5 and 5 can be removed from the heat insulating plate 1 without cracking. Can be prevented from peeling off. Also, the adhesive layer 4
Is waterproof, so that even if the tiles 5 fall off, the surface of the heat insulating plate 1 can be protected.

In the above embodiment, the thickness of the adhesive layer 4 is set to 1
In the case of forming a thin film having a thickness of about 3 mm, the mixing ratio of the water-soluble acrylic resin is reduced (about 30% by weight) and water is added. Thus, with the same amount of water-soluble acrylic resin, 1.7 m ² /
An adhesive layer of about 1 liter can be formed. In this case, the particle size of the sand used may be as small as about 0.50 mm.

When the thickness of the adhesive layer is increased,
Increase the mixing ratio of water-soluble acrylic resin to about 40% by weight
Palm or water with high viscosity (low water content)
Use acrylic resin. This allows the same amount of water solubility
0.25m with acrylic resin ^TwoPer liter of adhesive
Layers can be formed. In this case, the particle size of the sand used should be 0.7
It can be as large as about 1 mm.

In the above embodiment, cement (calcium carbonate) was used. However, titanium dioxide powder can be added to the cement, or titanium dioxide powder can be used alone.

[0030]

According to the present invention, since a water-soluble resin mortar is used, a finishing material such as a tile can be bonded and fixed directly to the surface of the resin-based heat insulating plate. There is an effect that the space can be used efficiently.

If cement is mixed with water-soluble acrylic resin mortar to form a base material, waterproofness,
A flexible adhesive layer can be formed, cracks due to drying of the adhesive layer can be prevented, and peeling of the finishing material can be effectively prevented following expansion and contraction of the finishing material. Therefore, the present invention can be effectively applied to a so-called external heat insulating structure in which a resin heat insulating material is provided on the outer wall side of the skeleton.

[Brief description of the drawings]

FIGS. 1A to 1C are longitudinal sectional views partially illustrating a process of constructing a wall structure according to an embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation board 2 Concrete 3 Supporting material 4 Adhesive layer 5 Tile (surface material) 6 Joint 7 Wall structure

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E110 AA02 AA27 AA48 AA55 AB04 BA12 CA03 CA25 DC21 GA23Z GA24Y GA33W GA33Y GB14Z GB24Z GB28W GB43X GB44Z GB45Z

Claims (6)

[Claims] 1. 30 to 40% by weight of a water-soluble acrylic resin
And a resin mortar formed by mixing 60 to 70% by weight of sand. 2. A water-soluble acrylic resin is formed as a polymer compound containing a vinyl acetate monomer, and one or both of titanium dioxide and calcium carbonate are added to a resin mortar and mixed by stirring. The adhesive for building base according to claim 1, wherein 3. An adhesive layer in which a resin-based heat insulating plate is attached to a surface of a wall frame of a building, and an adhesive for a building base made of a water-soluble acrylic resin-based mortar is applied to the surface of the resin-based heat insulating plate. A wall structure of a building, characterized in that a finishing material is attached thereto via a wall. 4. The building wall structure according to claim 3, wherein the adhesive for building base is a mixture of sand, a water-soluble acrylic resin and water. 5. The building wall structure according to claim 3, wherein one or both of titanium dioxide and calcium carbonate are added to the building foundation adhesive and mixed with stirring. 6. An insulating plate made of foamed styrene is provided on the surface of the wall of the building, and an adhesive layer formed by mixing sand, a water-soluble acrylic resin, and water is provided on the surface of the insulating plate. hand,
In the wall structure equipped with a finishing material, the adhesive layer is
Water-soluble acrylic resin 30-40% by weight, sand 60-7
A wall structure of a building, which is formed by mixing 0% by weight of a titanium dioxide powder and / or a calcium carbonate powder.