JPH06327B2 - Method for producing concrete product with foreign material as surface layer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention has a foreign material having a specific shape such as a tile, or a foreign material made of a loose material such as crushed rubber in the surface layer. The present invention relates to a manufacturing method for instantly demolding concrete products, mainly paving stones for paving road surfaces and laying and fixing them to form floors and walls of buildings.

<Prior Art> JP-B-59-9324 discloses a method for manufacturing a concrete product in which tiles are fixed on the surface.

In this conventional method, a large number of tiles are mounted and fixed on a flat rubber elastic plate with a gap, the elastic plate is inserted into the bottom of a concrete forming mold, and concrete is put into the form from above. The product is molded on the elastic plate in a state where the tile is partly embedded in the elastic plate by vibrating and applying pressure, and a joint groove is formed in the part of the elastic plate where the tile is not embedded.

<Problems to be Solved by the Invention> By the above-mentioned conventional method, a tile and a concrete layer are integrally bonded, and a concrete product having the tile as a surface layer can be manufactured. However, it is limited to the case where the surface of the tile is almost flat, and it is impossible if the surface of the tile has an uneven three-dimensional pattern for decorative reasons. I mean,
When the surface of the uneven tile is pressed by the press plate and fits into the elastic plate of rubber, the convex part fits into it and the concave part fits into it, so when the concave part fits in, the elastic plate compresses. This is because the reaction force concentrates on the convex portion and the tile is damaged at the convex portion.

Further, in the above-mentioned conventional method, the surface layer having the uneven three-dimensional pattern cannot be formed of the loose material.

<Means for Solving Problems> Therefore, the present invention is for forming a concrete product formed by a heterogeneous material having a specified shape such as a tile having a surface layer having a three-dimensional pattern on its surface, or a bulk heterogeneous material. Manufacture of a concrete product with a heterogeneous material as a surface layer, in which an elastic body is brought into contact with the surface of a heterogeneous material, a concrete layer is arranged on the back surface thereof, and the heterogeneous material and the concrete layer are pressed by a press plate in a formwork In the method, the elastic body that comes into contact with the surface of the foreign material is hollow, and contains a fluid inside,
The surface of the elastic body that is in contact with the surface of the foreign material is characterized in that the surface of the foreign material is deformed by moving the fluid inside.

<Examples> In each of the illustrated examples, 1 is a mold, 2 is a bottom plate of the mold,
3 is a hollow elastic body, 4 is a fluid contained in the hollow part of the elastic body,
For example, it is a liquid such as water or a gas such as air.

The elastic body 3 is made of a thin rubber plate or a tough cloth whose water permeability or air permeability is lost by a rubber coating or the like, and is formed into a sac like body. The liquid or air 4 is supplied into the hollow portion by a pressure feeding device 7 such as a compressor. In the case of a liquid, a small space may be left in the hollow portion because it is incompressible (see FIG. 1), and in the case of a gas, the hollow portion may be filled because it is compressible.

8 is a concrete layer filled with a water-permeable or water-impermeable mixture of cement or a microwave oven as a binder, 9
Is a vibrator for vibrating the form, and 10 is a press plate for pressurization.

The first embodiment shown in FIGS. 1 and 2 is a case where the hollow elastic body 3 is arranged on the upper surface of the bottom plate 2 of the form, and the pipe 6 is connected to the fluid opening / closing valve 4'and the pressure adjusting valve 5, A pressure is applied to the upper surface of the hollow elastic body 3 through the material 11 and the concrete layer 8, and the pressure in the hollow portion is automatically connected to an external mechanism that can reduce or increase the pressure so that the pressure is initially set.
Then, for example, a water-permeable tile 11 that is almost the same size as the foreign material and has an uneven pattern on the surface is placed in a mold so that the surface comes into contact with the upper surface of the elastic body, and then the water-permeable mixture is placed on top of it. The concrete layer 8 is put into a required thickness under vibration, and then the product is molded by pressing from above with a press plate 10 which is continuously vibrated. In order to strengthen the bond between the tile 11 and the concrete layer 8, an adhesive 12 such as a resin system is partially applied to the upper surface (rear surface) of the tile 11 before the concrete layer is applied in a grid pattern or a striped pattern. You may leave it.

In this case, when the uneven surface of the tile 11 comes into contact with the upper surface of the elastic body 3, the fluid inside the elastic body automatically and quickly moves from the portion where the convex contacts to the portion where the concave comes into contact with the elastic body. Make the upper surface of the tile correspond to the uneven surface of the tile.
This prevents the force from concentrating on the convex portions of the tile during the pressurizing process with the press plate 10, and the uneven surface of the tile is supported by the fluid 4 inside the elastic body with a uniform force, so that the press plate is not covered with concrete. A uniform pressure is applied to the entire surface of the tile 11 through the layer 8 to uniformly consolidate the entire concrete layer, and a good product can be obtained without damaging even a water-permeable tile that is easily broken.

In order to remove the product from the mold, the press plate 10 is raised to cover the product transport pallet, and then the form 1 is inverted to release the product from the form 1 and move to the curing room on the product transport pallet.

In addition to this, the hollow elastic body 3 is molded into a foreign material 11 which is integrally molded in advance on the upper surface of the hollow elastic body of the package by using a fluid pillow-filled water pillow or air pillow-like package system (not shown). It is placed so that it does not move to the mold 2 and supplied to the mold 2, and then concrete is supplied as material and pressure and vibration molding are performed, and after reverse curing demolding with the integrally molded product and curing curing, or demolding. Hollow elastic body 3 after some time
May be peeled from the product and repeatedly used.

The material to be placed on the package is not limited to a fixed material, but a binder, for example, a semi-cured material to which a resin is added may be poured into the recess 14 formed on the upper surface of the elastic package. .

In the embodiment shown in FIG. 3, a hollow elastic body 3 is provided on the lower surface of the press plate 10.
The case where is provided is shown. This method is particularly effective when the filling rate of concrete cannot be high when a foreign material is used as the lower surface of the form, or when the foreign material to be coated is a fragile or film-like thin material or a special material. Since the press plate 10 moves up and down, the pressure feeding device 7 is installed on a frame supporting the press plate, and the pressure feeding device 7 and the elastic body 3 are connected by a pipe 6 such as a flexible hose. Of course, also in this case, a package-type hollow elastic body may be attached to the lower surface of the press plate.

The lower surface of the formwork 1 is closed by a bottom plate which also serves as a pallet 15 for carrying out the demolded products, and a concrete layer 8 is put into the inside under vibration, and a tile 11 having an uneven three-dimensional pattern on the surface is placed thereon. Of the tiles 11 in the form with the press plate 10 while vibrating the form 1 again.
And the concrete layer 8 is pressurized. In this case, since the lower surface of the hollow elastic body 3 provided on the lower surface of the press plate contacts the uneven surface of the tile 11, the fluid inside the elastic body moves and the elastic body moves in the same manner as described in the first embodiment. The lower surface of the tile corresponds to the uneven surface of the tile.

Therefore, the tile 11 and the entire surface of the concrete layer 8 thereunder can be uniformly pressed by the press plate to form a product.

For demolding, remove the pallet 15 from the mold and press the press plate 10
The product may be extruded underneath while being placed on the pallet under the lower pressure (see the broken line in FIG. 3).

The embodiment of FIG. 4 shows the case where a loose material 13, for example, a crushed piece of rubber is used as the different material.

In this case, the hollow elastic body 3 is arranged on the bottom of the mold 1 as in FIGS. A depression 14 is formed on the upper surface of the elastic body 3.
Then, the loose material 13 is put thereinto, and then the concrete layer 8 is put into the mold under vibration, and then the press plate 10 is pressed under vibration.

Also in this case, the press plate 10 can uniformly press and compress the concrete layer 8 and the loose material 13 in the depression 14 on the upper surface of the elastic body 3 by the fluid inside the elastic body to form a good quality product.

Although the respective examples have been described above, the concrete layer in the present manufacturing method includes various additives such as mortar, glass fiber or metal, composite concrete mixed with fibers such as carbon fiber, resin concrete using synthetic resin as a binder, etc. It includes concrete in a broad sense. Also, the filling molding method is not limited to a molding machine that uses both vibration and pressure,
One of vibration and pressure may be used alone for molding. In addition, a sponge plate, a foamed plastic plate, or a buffer plate that deforms in the lateral direction other than compression and is placed on the surface of a dissimilar material placed on the hollow elastic body to accommodate minute changes may be laid. .

<Effects of the Invention> According to the present invention, it is possible to produce a uniformly compression-molded concrete product made of a composite material having an uneven surface.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a sectional view showing a mold and an elastic body of the first embodiment, and FIG. 2 is a state in which a product is molded by the apparatus of FIG. Sectional view, FIG. 3 is a sectional view of a product of the second embodiment being molded, and FIG. 4 is a sectional view of a product of yet another embodiment being molded. Is a mold, 3 is an elastic body, 4 is a fluid, 8 is a concrete layer, 11 is a tile as a different material, and 13 is a bulk material.

Claims (5)

[Claims] 1. An elastic material is brought into contact with the surface of a foreign material, a concrete layer is arranged on the back surface thereof, and the foreign material and the concrete layer are pressed together by a press plate in a formwork to form a surface material. In the method for producing a concrete product, the elastic body contacting the surface of the foreign material is hollow, the fluid is put inside, and the surface of the elastic body contacting the surface of the foreign material is made of a foreign material by moving the fluid inside. A method for manufacturing a concrete product having a surface made of a foreign material, which is characterized by being deformed depending on the surface. 2. The method for producing a concrete product having a foreign material as a surface layer according to claim 1, wherein the elastic body is provided on the bottom surface of the formwork and has a foreign material as a surface layer. Method. 3. A method for manufacturing a concrete product having a different material as a surface layer according to claim 1, wherein the elastic body is provided on the lower surface of the press plate and has a different material as a surface layer. . 4. A method for producing a concrete product having a foreign material according to any one of claims 1 to 3 as a surface layer, wherein the foreign material has a tile or other specified shape. A method for manufacturing a concrete product with the material as the surface layer. 5. The method for manufacturing a concrete product having a foreign material as a surface layer according to claim 2, wherein the elastic body has a recess on the upper surface for receiving the foreign material, and the foreign material is a bulk which is put into the recess. A method for manufacturing a concrete product having a foreign material, which is a physical material, as a surface layer.