JPH07207821A - Concrete product using elastic surface material as surface layer - Google Patents

Abstract

PURPOSE:To protect against collision accidents and enhance safety by bonding an elastic surface material layer to a concrete layer by way of an intermediate material which is capable of absorbing expansion and contraction produced by changes in a temperature CONSTITUTION:An intermediate buffer material 3, such as unwoven cloth, which is less sensitive to temperature changes or more particularly slow to expansion and contraction, is mounted to the surface of a concrete layer molded in a specified shape with a form. Furthermore, an elastic surface layer material 1 is integrally mounted thereon. The intermediate buffer layer may be advised to use a fiber-cubic layer whose double faces are bonded with the elastic surface layer 1 and the concrete layer 1 or a synthetic resin-made cellular sponge layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete product having an elastic surface material suitable for a floor of a building such as a hospital or a nursing home, a side wall, a pavement of a plaza, a ball stadium or a retaining wall of a circuit course.

[0002]

2. Description of the Related Art Pervious elastic and non-permeable elastic coverings made by combining chips of synthetic rubber, urethane rubber, etc. with a binder and processing them into plates of various sizes are available, for example, in super blocks and supermarkets. Road (Nitto Kako Co., Ltd.,
It is marketed under the trademark name). Conventionally, this elastic covering material is fixed on a concrete layer such as a plate-shaped concrete made of concrete with a synthetic adhesive to obtain products for floors, paving, and retaining walls.

[0003]

The expansion and contraction of the elastic covering material due to temperature change is about 30,000 to 60,000 times, which is significantly larger than the expansion and contraction of the concrete layer. For this reason, when the product is used on floors, pavements, and retaining walls, the peripheral part of the elastic covering material that expands and contracts greatly will peel away from the concrete layer over the course of time, and in the meantime water will rot and give off a bad odor. In some cases, the water entering between them freezes and the volume increases, and the peeling area of the peripheral portion of the elastic covering material increases. When it is used by spreading it on the floor of a hospital or nursing home, the peeled peripheral parts of the elastic covering materials of adjacent products abut and expand, which causes the patient and the elderly to trip over it. There is a risk of injury.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a product in which the elastic covering material is prevented from peeling, and the elastic covering material and the concrete layer are made different from the elastic covering material and the concrete, and the elasticity due to temperature change is different. It is characterized in that they are integrally connected through an elastic intermediate cushioning material capable of absorbing expansion and contraction of the covering material. The intermediate cushioning material is a fiber three-dimensional layer whose both surfaces are adhered to the elastic covering material and the concrete layer, or a sponge layer, or is sprayed and fixed on the back surface of the elastic covering material, and adhered to the concrete layer. It is preferable that the foamed sponge layer is made of synthetic resin.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, 1 is an elastic covering material, 2
Indicates a concrete layer, and 3 indicates an elastic intermediate cushioning material. As described above, the elastic covering material 1 is formed into a plate shape (for example, a thickness of about 10 mm, a length and width of 300 mm square to 1000 mm square, etc.) of various sizes by bonding chips such as synthetic rubber and urethane rubber with a binder as described above. A layer of mold release agent such as silicon, fluororesin, paraffin, etc., which has been processed and applied to facilitate peeling from the mold when molding into a plate shape, remains on the lower surface of the plate and loses adhesiveness. . When molding an elastic surface mounting plate having water permeability, the resin mixed as a binder flows down from between the chips to form a resin film on the back surface of the elastic surface mounting plate to lose water permeability. Therefore, the release agent layer and the resin film are removed by rubbing with sandpaper. The elastic intermediate cushioning material 3 is made of thick non-woven fabric,
It can be a three-dimensional fiber layer such as a sheet or mesh fluffed by spraying various fibers and binding it with a binder, a sheet of permanent woven carbon fiber, a sponge layer, or a synthetic resin sponge-like foam layer. Often,
The point is that it has a certain thickness (5 to 10 mm), and its expansion and contraction due to temperature change is smaller than that of the elastic covering material, but larger than that of the concrete layer. Further, the concrete layer 2 may be cement concrete, resin cocrete, or may be water-permeable or water-impermeable.

[0006] The concrete layer can be manufactured by molding it in a predetermined shape in advance with a mold and demolding it, and bonding the intermediate cushioning material and the elastic covering material on it with an adhesive to solidify it. For the adhesion of the intermediate cushioning material and the concrete layer, various adhesives can be used because the concrete layer is solid,
It is preferable to use a synthetic adhesive containing epoxy-based polysulfide as a main component, which adheres and cures even if the concrete has water.

Further, an elastic intermediate cushioning material is attached to the back surface of the elastic covering material 1, and the elastic intermediate cushioning material is placed inside the mold 10 so that the intermediate cushioning material comes into contact with the concrete. It may be solidified by hardening, the elastic covering material, the intermediate cushioning material, and the concrete layer may be integrally removed from the mold to manufacture. Also in this case, the surface of the intermediate cushioning material that comes into contact with the concrete is attached with the above-mentioned synthetic adhesive containing epoxy-based polysulfide as a main component, which is adhesively cured even with ready-mixed concrete containing a large amount of water. Fig. 2 is a cross-sectional view of a mold making a plate-shaped product. The elastic covering material and the intermediate cushioning material attached to the back surface of the mold are arranged in the mold with the elastic covering material facing the bottom of the mold. , Concrete is cast on the intermediate cushioning material in the form to make a plate-like concrete layer. Figure 3
Is a cross-sectional view of a mold making an L-shaped retaining wall product. The elastic covering material and the intermediate cushioning material attached to the back surface of the forming mold are elastic double-sided adhesive tape 12 on the standing surface 11 of the mold. And fix it, and put ready-mixed concrete on the back of the intermediate cushioning material to form a concrete layer with standing walls and horizontal leg walls.

[0008] In order to prevent the cement paste from wrapping around the surface of the elastic covering plate 1 and solidifying when the fresh concrete is placed, a water-soluble leak preventive tape 13 is provided around the surface of the elastic covering plate in order to prevent the surface from being soiled. Attach with water-soluble adhesive in advance.
The water-soluble leak-proof tape 13 is made of pulp or a water-absorbing vinylon or other water-absorbing fiber C which is swellable by containing water.
A thin tape having a thickness of 0.1 to 0.3 mm, which is bonded with a water-soluble binder such as MC (sodium fibrin glycolate). A tape having a thickness of 0.1 mm is about 3 to 5 when contacted with water. In a second, the thickness swells to about 2.5 mm and becomes a gel-like or soft clay-like shape, and a square of 10 mm square absorbs water and spreads out to about 12 to 14 mm square. If this leakproof tape 13 is attached around the surface of the elastic covering material,
When the fresh cement was placed and the cement paste tried to wrap around the surface of the elastic covering material, the leak-proof tape momentarily absorbed the water in the cement paste and swelled, and the cement paste became the elastic covering material. Prevents wraparound on the surface. Therefore, the surface of the elastic covering material is not contaminated with the cement paste. It can be easily removed by washing the product with water.

The elastic intermediate cushioning material 3 may be attached to the back surface of the elastic covering material 1 by bonding with an adhesive when the intermediate cushioning material is a three-dimensional fiber layer or sponge layer, or by heat fusion with a press and pressure bonding. . When the intermediate cushioning material is a foam sponge layer, a foaming agent-containing synthetic resin that foams to form a sponge may be sprayed on the back surface of the elastic covering material. In this case, the release agent layer or the resin film on the back surface of the elastic cover plate is formed on the back surface of the elastic plate by forming a large number of grooves having a width of 5 mm and a depth of 3 mm at appropriate intervals and removing the grooves. When a synthetic resin containing a foaming agent is sprayed there, the resin is fixed by filling the back surface of the elastic covering material and the groove formed on the back surface, and therefore the attachment strength of the foam sponge layer to the elastic covering material is significantly improved. When the concrete layer is water permeable, the adhesive adheres in a striped or grid pattern so that the water permeability is not hindered by the adhesive, and the sponge of the sponge layer has water permeability, The moisture adhering to the surface of the elastic covering material is allowed to penetrate into the water permeable concrete layer.

[0010]

As is apparent from the above, in the present invention, the elastic covering material is bonded to the concrete layer through the elastic intermediate cushioning material capable of absorbing expansion and contraction due to temperature change of the elastic covering material. . Therefore, when the elastic covering material greatly expands and contracts, the elastic intermediate cushioning material also expands and contracts similarly on the surface bonded to the elastic covering material, but the ratio of expansion and contraction of the surface bonded to the concrete layer depends on the elastic covering material. Much less than wood. As a result, the elastic intermediate cushioning material absorbs the expansion and contraction of the elastic covering material, making it 1 / 30,000 to 60,000 or less and transmitting it to the concrete layer. Therefore, the peripheral edge portion of the elastic covering material does not peel off from the intermediate cushioning material, and the peripheral edge portion of the intermediate cushioning material does not peel off from the concrete layer. When laying this concrete product and paving the floor, sidewalk, or open space of a building, or stacking it or lining it up side by side to form a retaining wall, inject a sealant into the joints (joints) between the products to make the surface You can construct elastic floors, sidewalks, plazas, retaining walls, etc. in a short period of time.

[Brief description of drawings]

FIG. 1A is a perspective view of a concrete product for flooring, paving, and retaining wall stacking. (B) is a perspective view of the concrete product for self-supporting retaining walls.

FIG. 2 is a cross-sectional view of a manufactured state of the product of FIG.

FIG. 3 is a cross-sectional view of a manufactured state of the product of FIG.

[Explanation of symbols]

 1 Elastic Surface Material 2 Concrete Layer 3 Elastic Intermediate Buffer Material 10 Formwork 11 Erecting Surface of Formwork 12 Double-sided Adhesive Tape 13 Leak-proof Tape

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location E01C 15/00 7322-2D // B28B 1/16 E04C 1/40

Claims (3)

[Claims] 1. An elastic covering material and a concrete layer are integrally bonded via an elastic intermediate cushioning material which is different from the elastic covering material and concrete and can absorb expansion and contraction of the elastic covering material due to temperature change. A concrete product whose surface layer is an elastic surface material. 2. The concrete product according to claim 1, wherein the intermediate cushioning material is a three-dimensional fiber layer in which both surfaces are bonded to the elastic facing material and the concrete layer, or a sponge layer. A concrete product that uses surface material as the surface layer. 3. The concrete product according to claim 1, wherein the intermediate cushioning material is a synthetic resin foam sponge layer which is sprayed and fixed to the back surface of the elastic facing material and adhered to the concrete layer. A concrete product whose surface layer is an elastic surface material.