JPH0615622A - Manufacture of concrete product with surfaced natural stone - Google Patents

Abstract

PURPOSE:To provide the manufacturing method of a concrete product having decorative surface, from which large and small natural stones emerge. CONSTITUTION:On the botton surface of a high surface pallet 1, a rubber plate 2 with a large number of recessed surfaces 4, in each of which a natural stone 3 is fitted and each of which has a fine drainage hole 5 at its center, are laid. After the natural stones 3 are fitted in the recessed surfaces under the condition that the upper part S of each stone 3 projects beyond the plate, the surface pallet 1, the surface of which is moistened by spraying water from above, is arranged in a form. After that, concrete is charged in the form and compacted under vibration and prassure. The portions of the stones, which are fitted in the recessed surfaces 4 of the rubber plate 2, are so constituted as to produce a revealed face by peeling off the rubber plate 2 after the molding, curing and stripping of a concrete product. Since no movement of stones occur at molding, an intended surface can be produced.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a concrete product in which large and small blocks of natural stone are exposed on the surface and used as a decorative surface.

2. Description of the Related Art Conventionally, a concrete product used for a retaining wall or earth retaining intended by the present invention uses a dish-shaped surface pallet, so that the wall surface laminated is a monotonous wall surface and is in harmony with the surrounding environment. There was a feeling of strangeness. In order to improve this point, the applicant uses a surface pallet that has a deeper depth than the conventional surface pallet, lays a soft rubber plate on the bottom of this surface pallet, and lays a natural stone block on this to place it in the formwork. We have developed a method for placing concrete in concrete, compacting it by vibration and pressing, and forming the concrete block with the exposed surface of natural stone on the surface using the elasticity of the rubber plate. (Tokuhei 2-14
(See No. 162)

However, according to the above invention, since the slump-free hard concrete is used and the soft rubber plate is used, the stone blocks arranged on the rubber plate are pressed by the upper side. It is well suited to be embedded in about half of the concrete to form a concrete block with the target natural stone surface, but when using soft concrete, the stone blocks are completely embedded in the concrete. The surface of the demolded product only shows the surface of the lump of stone, and a product having an uneven surface like a natural stone cannot be obtained. Also, there was a subtle change in the sinking of the stone blocks depending on the softness of the rubber plate used.

According to the present invention, a deep surface pallet having a height is used similarly to the above-mentioned invention and a rubber plate is laid on the bottom surface. , The natural pallets are pushed into this so that the upper part protrudes about half, and the fixed surface pallet is placed in the formwork, or the natural lumps are placed on the surface pallet at intervals and arranged,
The rubber pieces are sandwiched and fixed in this space, placed in the mold, and then concrete is poured.

Therefore, the concrete to be used can be used regardless of whether it is hard-kneaded or soft-kneaded, and it has an intended arrangement without any movement of natural stone blocks, and can be effectively used particularly in the molding of large-sized products by casting. Then, after the concrete is hardened, it is released from the mold and the rubber plate is peeled off, or a rubber piece is pulled out to obtain a concrete product in which an uneven decorative surface of natural stone blocks is exposed.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings. FIG. 1 and FIG. 2 are sectional views of a surface pallet according to claim 1, wherein FIG. A large number of concave surfaces (4) into which the natural stone block (3) is inserted are formed on the bottom surface of the surface pallet (1) provided with, and the drainage pores (5) are penetrated to the bottom at the center of the concave surface (4). 1 is a cross-sectional view of a surface pallet (1) in which a rubber plate (2) is laid, and a natural stone block (3) is fitted into the concave surface (4) so that an upper surface S thereof projects. FIG. 2 shows a sectional view of the rubber plate (2) having the concave surface (4) laid in the surface pallet (1).
As shown in the figure, the surface pallet (1) used in the present invention is a surface pallet having a depth due to the arrangement of the rubber plate (2) and the natural stone block (3). 3 and 4
3 is a sectional view of the surface pallet according to claim 2, wherein FIG.
Is a through hole (4) into which a natural stone block (3) is fitted on the bottom surface of a surface pallet (1) having a large number of pores (8) for draining water on the bottom surface.
A) A rubber plate (2) having a large number formed therein is laid, and a natural stone block (3) is inserted into the through hole (4A) so that the upper surface S of the pallet (1) is cross-sectionally shown. is there. FIG. 4 is a sectional view of the rubber plate (2) having through holes (4A) laid in the surface pallet (1). Further, FIGS. 5, 6 and 7 are detailed explanatory views of the surface pallet according to claim 3, wherein FIG. 5 shows the surface pallet (1) having a large number of drainage pores (8) on the bottom surface. A surface pallet (1) fixedly formed by placing natural stone blocks (3) on top of each other at intervals, and pushing rubber pieces (2A) into the spaces as indicated by arrow P.
FIG. 6 is a cross-sectional view of the natural stone block (3) and the rubber piece (2).
It is a top view of the surface pallet (1) formed by A). FIG. 7 is a development view of the rubber piece (2A) filled in the space of the natural stone block (3).
The shape of A) is not limited to this, and many small pieces can be used, and a small piece of sponge may be used instead of the rubber piece. Next, a method of manufacturing a concrete block using the surface pallet of the present invention will be described with reference to FIGS. FIG. 8 shows a natural stone block (3) arranged on the surface pallet (1), and (2) shows a rubber plate.
Is the same as the surface pallet (1) shown in FIG.
An appropriate amount of water W is sprayed on the surface pallet. FIG. 9 is a cross-sectional view in which the surface pallet (1) in which the stone block surface is infiltrated by spraying water W according to FIG. 8 is installed in the mold (10), and concrete C is poured from above. (10) shows a split mold which is divided into left and right, but the molding mold is not limited to this, and the same applies to a mold which is integrally configured.
(11) shows a vibrating table, and (12) shows a vibrator. The surface pallet (1) is installed on the vibrating table (11) in the mold of the molding machine, concrete C is charged, the vibrating machine (12) is activated, and the press board V is used for compaction and demolding. After the concrete is hardened, the pallet (1) is removed and the rubber plate (2) is peeled off to obtain a decorative block on the surface of the natural stone in which the natural stone lump (3) of the portion fitted in the rubber plate (2) is exposed. Since the natural stone block (3) is embedded in the concrete at the portion S projecting from the rubber plate (2) in the surface pallet, and the surface of the projecting stone block is sufficiently infiltrated with water W, The concrete contains water and becomes soft and fits in with the stone block surface. After the molding is completed, the concrete does not adhere to the concrete block and does not fall off. Also, the natural stone block (3) exposed on the concrete block surface The surface is a rubber plate (2)
Since it fits inside, there is no need to wash it out after molding, and the tone and texture of natural stone is expressed. The natural stone material used in the present invention is a processed stone material, and in the figure, it has a square shape, but it is a stone material formed by cutting a large rock, and the cut surface is beautifully manifested. The method according to the present invention can be applied to the molding of large concrete products or deformed concrete products by cast molding using soft kneaded concrete in addition to the blocks described in the above examples, and examples thereof will be given. Figure 10
[Fig. 3] is a cross-sectional view of a form showing a method for forming a large-sized concrete slab having a decorative surface of natural stone (3). In the figure, a rubber plate (2) having a large number of concave surfaces is laid on the bottom surface of the mold (1), and natural stones (3) are pushed into the concave surfaces and fixed. Then, after the sand S1 is layered on the concave portion of the rubber plate (2) and the convex portion formed by the concave surface, that is, the joint portion between the natural stone (3) and the natural stone (3), concrete is poured. . Reference numeral (5) in the figure denotes a water draining hole provided in the concave surface of the rubber plate (2), and (8) denotes a water draining hole provided in the bottom surface of the formwork (1). Excess water can be discharged. In addition, (9) is a plastic pin that is attached as necessary to prevent stones from coming off during demolding. In the concrete slab thus formed, after the concrete is hardened, the mold (1) is disassembled and the rubber plate (2) is peeled off to obtain a large-sized concrete slab having a decorative surface of natural stone (3). FIG. 11 shows a modified concrete molding method, and the drawing shows an L-shaped retaining wall block for earth retaining. (1) is a mold, (2) is a rubber plate provided with through holes, and has the same shape as the rubber plate (2) shown in FIG. This rubber plate (2) is erected inside the standing plate of the L-shaped form (1). Then, the natural stone (3) is fitted and fixed in the through hole (2), concrete C is put into the through hole (2) from above, and compacted by a rod-shaped vibrator or the like. The code | symbol (15) in a figure is a support plate of a formwork (1).

INDUSTRIAL APPLICABILITY As described above, the present invention can be used regardless of whether the concrete used is hard or soft, and can be expressed in an intended arrangement without any movement of natural stone blocks. In particular, when molding a large-sized product by casting, the natural stone mass can be completely fixed without moving, and thus it can be effectively used.

[Brief description of drawings]

FIG. 1 is a sectional view of a surface pallet using a rubber plate having a concave surface.

FIG. 2 is a sectional view of a rubber plate having a concave surface.

FIG. 3 is a cross-sectional view of a surface pallet using a rubber plate having a through hole.

FIG. 4 is a sectional view of a rubber plate having a through hole.

FIG. 5 is a cross-sectional view of a surface pallet using rubber pieces.

FIG. 6 is a plan view of a surface pallet using rubber pieces.

FIG. 7 is a development view of a rubber piece.

FIG. 8 is a diagram illustrating an example of a molding process.

FIG. 9 is a cross-sectional view of a molding frame.

FIG. 10 is a cross-sectional view of a molding form for a large concrete product.

FIG. 11 is a cross-sectional view of a forming frame of an L-shaped retaining wall block.

[Explanation of symbols]

 (1) ... Formwork (2) ... Rubber plate (2A) ... Rubber piece (3) ... Pressed natural stone block (4) ... Rubber plate concave surface (4A) ... Rubber plate through hole (5) ... Rubber plate Water drainage hole (8) ... Water drainage hole on pallet

Claims (3)

[Claims] 1. A surface pallet having a large number of water-removing pores formed on its bottom surface is provided with a plurality of concave surfaces into which natural stones are fitted, and the water-removing pores are penetrated to the bottom at the center of the concave surface. Laying a rubber plate provided so that the natural stone block is fitted into the concave surface so that the upper part thereof projects, and the surface pallet sprayed with an appropriate amount of water is placed in the formwork, and concrete is poured from above. A method for producing a concrete product in which natural stone lumps are exposed on the surface, which is characterized by pouring and compacting by vibration and pressure. 2. The surface according to claim 1, wherein a rubber plate having a large number of holes into which natural stones are fitted is laid on the bottom surface of a surface pallet having a large number of pores for draining water on the bottom surface. A method for manufacturing a concrete product that reveals natural stone blocks. 3. A natural pallet is placed at intervals on a surface pallet having a large number of pores for draining water on the bottom surface, and rubber pieces are inserted into the intervals to fill the intervals. The method for producing a concrete product according to claim 1, wherein natural stone blocks are exposed on the surface.