JP2002322656A - Decorative board for wall surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative board for a concrete wall surface which is quite light and can cope with water leakage from a rear face through a drain hole or a crack of a retaining wall or the like. SOLUTION: A decorative board 2 of the present invention is characterized to have a honeycomb state layer 4 on a rear face part to be attached to a wall surface 10. By constituting more than a half with the honeycomb state layer 4, drastic reduction of weight can be achieved, and it can be easily fixed to the wall surface only by bonding with an adhesive. Since leakage leaking out of a drain hole 11 can flow down through the honeycomb state layer 4 on the rear face of the decorated board, existing drainage function of a retaining wall is not lost and since water is drained through the rear face of the decorated board, the surface of the decorated board is not stained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative material that can be applied to an existing concrete wall surface.

[0002]

2. Description of the Related Art In recent years, concrete buildings have a remarkable situation that gives a sense of incongruity in the scenery due to aging and changes in the location environment. Therefore, the concrete building in such a state is beautifully comfortable and has a familiar feeling, and has been subjected to a scenic view treatment for harmonizing with the surrounding environment. At present, the most common scenic treatment is to attach natural stones, tiles, artificial rocks, etc. to concrete walls with cement mortar.

[0003]

In the conventional scenic treatment in which natural stones, tiles, and the like are pasted, the decorative material is heavy, so it takes time to fix it, and it does not cope with water leaking from the back of the concrete structure. As a result, there are many problems such as dirt (water residue) being noticeable.

[0004] In view of this point, an object of the present invention is to provide a lighter cosmetic material and a cosmetic material capable of coping with water leakage from the back surface through drain holes or cracks in a retaining wall or the like.

[0005]

Means for Solving the Problems The decorative material of the present invention is characterized in that it has a bean plate-like layer on the back surface mounted on the wall surface. The bean plate-like layer (a so-called porous structure, also called “junka”, “suka”, “abata”) has a thickness of 4% of the total thickness of the decorative material.
５〜 to と す る is preferred in terms of weight reduction. The remaining surface layer portion of this decorative material can be provided with a decorative property as a decorative layer made of lightweight mortar or FRP (fiber-reinforced plastic).

[0006] In the decorative material of the present invention having such a two-layer structure of the decorative layer and the bean-plate-like layer, a significant reduction in weight is achieved by making at least half of the decorative material a bean-plate-like layer. Due to this weight reduction, it can be easily fixed to a concrete wall or the like simply by bonding with an appropriate adhesive. In addition, water leaking from the back of the concrete structure to which it is attached can flow down through the facing pea plate layer of the facing facing material, which impairs the existing drainage function on the retaining wall etc. And the surface of the decorative material is not stained because the water is drained through the back surface of the decorative material.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a method for producing a decorative material according to the present invention. Hereinafter, description will be made in order.

First, a mold 1 for molding is prepared.
The mold 1 is provided with a pattern that determines the surface shape of the decorative material, that is, the appearance. A mold release agent is applied to the mold surface of such a mold 1, and a lightweight mortar is prepared and poured from lightweight aggregate, cement and water. In this case, a shirasu balloon or an artificial aggregate is used as the lightweight aggregate. The thickness at which the lightweight mortar is poured is set to 1/5 to 1/2 of the thickness D of the entire decorative material, whereby the decorative layer 3 serving as the surface of the decorative material 2 is formed.

Alternatively, when the decorative layer 3 made of FRP is formed, a mold release agent is applied to the mold 1 and then impregnated with resin and fiber and applied to the mold surface to form a FRP layer having a thickness of 1 mm or more. It is molded into a shape. FRP is GFRP (glass fiber type), C
Various types such as FRP (carbon fiber type) can be used.

Next, a porous mortar is prepared by mixing a lightweight aggregate having a particle size of 1 to 6 mm and an adhesive such as an epoxy resin or a urethane resin. Pour in. By filling the mold 1 to the full and flattening it, 4/5 to 1/1 of the thickness D of the whole decorative material
A bean plate-shaped layer 4 having a thickness of 2 (or a larger thickness if the decorative layer 3 is FRP) is laminated on the decorative layer 3 and molded.
As the lightweight aggregate, 1.0-5. Geelite (trademark of Crystal Clay Co., Ltd.) made by foaming crushed glass is used.
0 mm is suitable. The adhesive mixed therewith may be a general epoxy resin, urethane resin, or acrylic resin as long as the lightweight mortar of the decorative layer 3 is cured and dried. When mortar is not cured (or wet in a wet state), tetrabond (trademark of Kawai Chemical Co., Ltd.) having excellent underwater adhesion performance is suitable. That is, generally, a lightweight mortar requires a curing period of 7 days (20 ° C.), but if it can be manufactured before it is cured or dried, the construction period can be shortened. Such a bean plate-shaped layer 4 may be formed with a concavo-convex state so as to intersect the groove cutting.

After the bean plate-like layer 4 is formed, it is cured for 3 to 14 days and then released. After the mold release, a decorative coating can be applied to the surface of the decorative layer 3. Granite (trademark of Hiroshima Kasei Co., Ltd.) is suitable for the natural paint for the decorative coating. Alternatively, in order to shorten the coating operation, a mold release agent is applied to the mold 1 and then a transfer coating method (version III of Hiroshima Kasei Co., Ltd.) is applied. .

[0012] The plate-shaped decorative material 2 of the present example completed as described above.
Is mounted on a wall surface as shown in the construction example of FIG.
The example of FIG. 2 is an example of mounting on the wall surface of the concrete retaining wall 10.

At the time of mounting, the concrete wall surface is cleaned and attached with a putty-like adhesive 5. That is, the decorative material 2 of the present example is extremely lightweight because at least half of the decorative material 2 is the bean-plate-shaped layer 4, so that sufficient durability can be ensured by bonding with the putty-like adhesive 5. If the joints between the applied decorative materials 2 are sealed only with the sealing material 6 on the surface portion (the portion of the rear bean plate layer 4 is not sealed), the decorative wall surface is completed. The sealing material 6 can be a cement mortar, a polymer or resin-based, rubber-based putty-like seal, or the like.

After completion, water leaking from the ground behind the retaining wall through the drain hole 11 of the concrete retaining wall 10 or rainwater from above passes through the bean plate upper layer 4 behind the decorative material and reaches the lowermost end. It flows out to a gutter (not shown). Therefore, it is possible to prevent the drainage function of the retaining wall from being impaired and to prevent the surface from being stained by rainwater or leakage.

[0015]

According to the cosmetic material of the present invention, since the weight can be reduced, it can be easily attached to a wall surface with an adhesive. In addition, since rainwater and water leakage can be treated through the back surface serving as the mounting surface, the drainage function of the existing wall surface is not impaired, and dirt on the surface of the decorative material can be prevented.

[0016] Furthermore, the conventional casting method on site cannot convert the formwork, and the disposal of the formwork requires a large cost.
ADVANTAGE OF THE INVENTION According to this invention, it is economical because a formwork can be diverted as a manufacturing and molded article by a factory, and it contributes to reduction of the amount of industrial waste generated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a decorative material according to the present invention together with a mold.

FIG. 2 is a sectional view of an essential part showing an example of applying a decorative material according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formwork 2 Decorative material 3 Decorative layer 4 Bean plate upper layer 5 Adhesive 6 Sealing material 10 Concrete retaining wall 11 Drainage hole

Claims (4)

[Claims] 1. A decorative material for a wall surface, comprising a bean plate-shaped layer on a back surface mounted on the wall surface. 2. The bean-plate-like layer is 4/5 of the total thickness of the decorative material.
The decorative material according to claim 1, which has a thickness of up to 1/2. 3. The decorative material according to claim 1, wherein a portion other than the bean plate-like layer is a decorative layer made of lightweight mortar. 4. The decorative material according to claim 1, wherein a portion other than the upper layer of the bean plate is a decorative layer made of FRP.