JPS63159013A - Manufacture of concrete product using heterogeneous material as surface layer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention has a surface layer of a foreign material such as a tile or other foreign material having a specified shape, or a foreign material made of a bulk material such as crushed rubber. This invention relates to a manufacturing method for immediately demolishing concrete products, mainly paving stone blocks that are laid and fixed in order to pave road surfaces or to form the floors and walls of buildings.

(Prior Art) Japanese Patent Publication No. 59-9324 discloses a method for producing a concrete product in which tiles are fixed to the surface.

This conventional method involves gluing and fixing a large number of tiles on a flat rubber elastic board with gaps in between, placing the elastic board at the bottom of a concrete molding form, and pouring concrete into the formwork from above. By applying vibration and pressure, the product is formed on the elastic board with the tile partially sunk into the board, and a joint groove is formed in the part of the elastic board where the tile is not sunk.

(Problems to be Solved by the Invention) According to the above-described conventional method, the tiles and the concrete layer are joined together, and a concrete product having the tiles as the surface layer can be manufactured. However, this is only possible if the surface of the tile is flat, and is not possible if the surface of the tile has a three-dimensional uneven pattern for decorative reasons. I mean,
The uneven surface of the tile is pressurized by a press plate during molding and sinks into the rubber elastic plate, or the concave part sinks in after the convex part sinks in, so by the time the concave part sinks in, the elastic plate is compressed. This is because the reaction force is concentrated on the convex portion, and the tile is damaged at the convex portion.

Further, in the conventional method described above, it is not possible to form a surface layer having a three-dimensional pattern of unevenness on the surface using bulk material.

<Means for Solving the Problems> Therefore, the present invention provides a method for forming a concrete product in which a surface layer with a three-dimensional pattern is formed from a different material with a specific shape such as a tile, or a different material in bulk. , Manufacture of concrete products with a surface layer of a foreign material, in which an elastic body is brought into contact with the surface of a foreign material, a concrete layer is placed on the back side, and the foreign material and the concrete layer are bonded together by pressurizing with a press plate in a formwork. In the method, the elastic body that contacts the surface of the foreign material is hollow and contains a fluid;
The surface of the elastic body that comes into contact with the surface of the foreign material is characterized in that it deforms according to the surface of the foreign material by moving the fluid inside.

<Example) In each of the illustrated examples, 1 is a formwork, 2 is a bottom plate of the formwork,
3 is a hollow elastic body, 4 is a fluid 1 placed in the hollow part of the elastic body
Examples include liquids such as water and gases such as air.

The elastic body 3 is made of a thin rubber plate or a strong fabric whose water permeability or air permeability has been lost with a rubber coating, etc., and is constructed in the shape of a bladder, to which a pipe 6 having a pressure regulating valve 5, for example, is connected, and a pump or near The liquid and air 4 are supplied to the hollow part using a pressure feeding device 7 such as a compressor. Note that in the case of a liquid, a small space may be left in the hollow part because it is incompressible (see FIG. 1), and in the case of a gas, it may be filled in the hollow part because it is compressible.

8 is a concrete layer filled with a formwork filled with water-permeable or water-impermeable cement or range as a binder; 9
Reference numeral 10 indicates a vibrator for vibrating the formwork, and 10 indicates a press plate for applying pressure.

The first embodiment shown in FIG. 1.2 is a case in which a hollow elastic body 3 is placed on the upper surface of the bottom plate 2 of the formwork, and a pipe 6 is connected to a fluid opening/closing valve 4' and a pressure regulating valve 5.

Hollow elastic body 3 via dissimilar material 11 and concrete layer 8
The pressure inside the hollow part is connected to an external mechanism that can automatically reduce or increase the pressure to the initially set pressure with respect to the pressure applied to the upper surface of the hollow part. As for the different material, for example, a water-permeable tile 11, which is the same size and has an uneven pattern on the surface.
is placed in the formwork so that the surface is in contact with the top surface of the elastic body,
Then, a concrete layer 8 of a water-permeable composition is poured onto it to a required thickness under vibration, and then, while continuing vibration, pressure is applied from above with a press plate 10 to form a product.

In order to strengthen the bond between the tile 11 and the concrete layer 8, a resin-based adhesive 12 is partially applied in a lattice or striped pattern to the top surface (back surface) of the tile 11 before adding the concrete layer. You can leave it there.

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 1 automatically and quickly moves from the part where the protrusions contact to the part where the concave contacts, and the elastic body Make the top surface follow the uneven surface of the tile.

This prevents force from being concentrated on the convex portions of the tile during the pressurizing process with the press plate 10, and because the fluid 4 inside the elastic body supports the uneven surface of the tile with a uniform force, the press plate can concrete the concrete. By applying pressure evenly to the entire surface of the tile 11 through the layer 8, the entire concrete layer is uniformly consolidated, and a good product can be obtained without damaging even the easily cracked water-permeable tiles.

To remove the product from the mold, press plate lO is raised, a pallet for transporting the product is placed over it, the mold l is reversed, the product is removed from the mold, and the pallet for transporting the product is moved to the curing room.

In addition, the hollow elastic body 3 is made into a package system (not shown) that can be freely put in and taken out in the form of a water pillow filled with fluid or an air pile (not shown), and a different material 11 is being molded in advance on the upper surface of the hollow elastic body of the package. The mold is placed on the mold so that it does not move and is supplied to the formwork 2, then filled with concrete, pressurized and vibration molded, and then reversed and demolded together with the integrally molded product, and after curing and hardening, or demolding. After a while, hollow elastic body 3
may be peeled off from the product and used repeatedly.

In addition to the material with a fixed shape, the material to be placed on the package is one in the depression 14 formed on the top surface of the elastic package.
A semi-cured material to which a binder, for example a resin, has been added may be poured.

The embodiment shown in FIG. 3 has a hollow elastic body 3 on the lower surface of the press plate IO.
This method is particularly useful when it is difficult to obtain a high concrete filling rate when a foreign material is used as the bottom surface of the formwork, or when the foreign material to be covered is fragile, thin film-like material, or special material. This is an effective method. Since the press plate lO moves up and down, the pressure feeding device g17 is installed on a frame that supports the press plate, and the pressure feeding device 7 and the elastic body 3 are connected to the piping 6 such as a flexible hose! ! iContinue. Of course, in this case as well, a packaged hollow elastic body may be attached to the lower surface of the press plate.

The lower surface of the formwork 1 is closed with a bottom plate that also serves as a pallet 15 for carrying out the demolded product, a concrete layer 8 is placed inside under vibration, and on top of this, tiles 11 having a three-dimensional pattern of unevenness on the surface are placed. Then, while vibrating the formwork l again, press the tile 11 in the formwork with the press plate lO.
and pressurizes the concrete layer 8. In this case, when the lower surface of the hollow elastic body 3 provided on the lower surface of the press plate comes into contact with the uneven surface of the tile 11, the fluid inside the elastic body moves as described in the first embodiment. The underside of the body follows the uneven surface of the tile.

Therefore, it is possible to uniformly press the entire surface of the tile 11 and the underlying concrete layer 8 using a press plate to form a product.

For demolding, remove the pallet 15 from the formwork and press the press plate 1.
It is sufficient to push the product downward while it is placed on the pallet with a downward pressure of 0 (see the broken line in Figure 3).

The embodiment shown in FIG. 4 shows a case where a bulk material 13, for example, crushed pieces of rubber, is used as the different material.

In this case, the hollow elastic body 3 is placed on the bottom of the formwork l as in FIG. 1.2. A depression 14 is formed on the upper surface of this elastic body 3.
A concrete layer 8 is placed in the form under vibration, and then a press plate 10 is used to press the concrete under vibration.

In this case as well, the press plate IO can uniformly pressurize and compress the concrete layer 8 and the bulk material 13 in the depression 14 on the upper surface of the elastic body 3 using the fluid inside the elastic body, thereby molding a high-quality product.

Each example has been explained above, but the concrete layer in this manufacturing method is composite concrete mixed with various additives including mortar, fibers such as class fibers, carbon fibers, and resin concrete with synthetic resin as a binder. This includes concrete in a broad sense. Furthermore, the filling molding method is not limited to a molding machine that uses vibration and pressure in combination, but may also be performed using either vibration or pressure alone.

In addition, on top of the hollow material, a sponge board, a foamed plastic board, and a buffer board that can be deformed laterally in addition to compression to accommodate extremely small changes on the surface of several dissimilar materials are placed. You can.

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

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Fig. 1 is a cross-sectional view showing the mold and elastic body of the first embodiment, and Fig. 2 shows a product being molded using the apparatus shown in Fig. 1. 3 is a sectional view of the product of the second embodiment being molded; FIG. 4 is a sectional view of the product of another embodiment being molded; 3 is a formwork, 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) A concrete product with a foreign material as a surface layer, in which an elastic body is brought into contact with the surface of a foreign material, a concrete layer is placed on the back side, and the foreign material and the concrete layer are bonded together by pressurizing with a press plate in a formwork. In the manufacturing method, the elastic body that contacts the surface of the foreign material is hollow and contains a fluid, and the surface of the elastic body that contacts the surface of the foreign material moves the internal fluid to the surface of the foreign material. A method for manufacturing a concrete product whose surface layer is made of a different material that is characterized by its deformation. (2) A method for manufacturing a concrete product having a surface layer made of a foreign material as described in claim 1, wherein the elastic body is provided on the bottom surface of a formwork. (3) A method for manufacturing a concrete product having a surface layer made of a foreign material as set forth in claim 1, wherein the elastic body is provided on the lower surface of a press plate. (4) In the method for manufacturing a concrete product having a surface layer made of a foreign material according to any one of claims 1 to 3, the foreign material is a tile or other foreign material having a specified shape. A method of manufacturing concrete products with a surface layer. (5) In the method for manufacturing a concrete product having a surface layer made of a foreign material as described in claim 2, the elastic body has a recess on the upper surface for receiving the foreign material, and the foreign material is a bulk material placed in the recess. A method for manufacturing concrete products with a surface layer made of a different material.