JPH01275482A - Production of concrete block similar to native rock - Google Patents

Abstract

PURPOSE:To mass-produce concrete blocks having a natural feeling by molding each concrete matrix, laying aggregate for decoration, pressing a faceplate packed with aggregate for sealing on the matrix and vibrating the faceplate. CONSTITUTION:A concrete matrix is molded with a mold and aggregate for surface decoration such as native rock is laid on the surface of the matrix to be decorated at arbitrary intervals immediately after moving or after the lapse of a certain time. A faceplate uniformly packed with aggregate for sealing is then pressed on the matrix to compact the matrix and this matrix is turned over by 180 deg. and taken out of the mold. A concrete block similar to native rock is obtd.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing concrete products, and more specifically, to a method for manufacturing concrete products, and more specifically, to a method for manufacturing concrete products, in which a decorative material is pressed into the surface of a concrete molded product using a closing aggregate. Concerning the manufacturing method of the product.

[Conventional technology]

Conventionally, methods for producing finished concrete products with natural stone exposed on the surface include embedding natural stone in the surface before the concrete hardens, and fixing natural stone etc. with ice on pallets and then pouring concrete, mortar, etc. A concrete product in which concrete is poured over the decorative aggregate, pressurized and vibrated, cured, and then the faults are separated and the laminated state is exposed on the decorative surface. (Japanese Unexamined Patent Publication No. 53-136028), the surface of a concrete block is decorated by pouring concrete into a formwork, scattering decorative gravel on top of it, and applying vibration and pressure. There is a method for manufacturing concrete blocks with decorative gravel on the surface (Japanese Patent Application Laid-open No. 5
8-158206).

[Problem that the invention seeks to solve]

However, with methods such as embedding natural stone before concrete hardens or fixing natural stone with ice, the natural stone tends to peel off after installation.

Also, JP-A-53-136028, JP-A-58-
Even if the method of Publication No. 158206 is used, when using large aggregates such as natural stone as a surface decorative material, the natural stone and concrete do not bond well and the natural stone easily peels off, which is a drawback. It was impossible to produce concrete products that

In addition, all of the conventional methods can only be used for relatively small, uniformly shaped cosmetic aggregates, and cannot be used for large cosmetic aggregates or cosmetic aggregates of various sizes. In addition, the protrusion of the unevenness of the decorative aggregate was limited to a very small amount.

Furthermore, in the conventional method, the bare surface of the concrete is inevitably exposed at the joints, giving the product an artificial atmosphere.

Therefore, the present applicants have previously filed an application for a method for manufacturing a concrete product whose surface is decorated by exposing the aggregate (Japanese Patent Application Nos. 60-142,813 and 1982-142,814).

However, although the method applied by the present applicants made it possible to manufacture concrete products with natural stone exposed and finished on the surface, it was not possible to produce concrete products mechanically and in mass production of natural stone concrete products. Desiring the development of a manufacturing method and its manufacturing equipment, the applicant filed an application for a concrete product manufacturing method and its equipment for mechanically mass-producing exposed concrete blocks made of natural stone (Japanese Patent Application No. 62-315822). issue).

The purpose of the present invention is to improve these and provide an excellent method for manufacturing exposed concrete blocks made of natural stone that can be used with a variety of molding methods.

[Means to solve the problem]

Therefore, the inventors of the present invention conducted extensive research to provide a method for manufacturing concrete blocks that can be made with natural stone as a surface decoration as another molding method. Immediately after molding the base material, or after a certain period of time, the decorative aggregate is placed at desired intervals on the surface to be decorated.
A face plate filled with aggregate for sealing or decorative aggregate is laid at desired intervals on the surface to be decorated, then the aggregate for sealing is added, the face plate is crimped, and then pressure and vibration are applied. The present invention was completed based on the knowledge that if the concrete matrix was then turned over and then demolded, it could be applied to a number of methods for forming concrete blocks.

The present invention is a process in which the face plate and the concrete matrix are sequentially transferred on a line, in which filler aggregate is supplied, decorative aggregate is supplied and aligned, mortar, etc. are supplied, and the face plate obtained in each process is A concrete block is manufactured by combining the concrete block and the concrete block matrix.

Hereinafter, one embodiment of the present invention will be explained based on the drawings.
The present invention is not limited thereby.

FIG. 1 is a diagram showing an outline of the process of the present invention.

In Fig. 1, the surface of the concrete matrix 1 on the line that is sequentially carried out from the concrete molding machine is to be decorated.
Immediately after the molding of the matrix or after a certain period of time has passed since molding, the surface decorative aggregate 2 is supplied from the surface decorative aggregate supply port 1 at arbitrary intervals.

Apply pressure with a pressure plate to force the surface decorative aggregate into the concrete matrix surface.

In addition, the face plates 3 that are sequentially transferred separately from the line include:
The filler aggregate 4 is supplied from the filler aggregate supply port, and then vibration is applied to make the supplied filler aggregate uniform on the face plate.

The obtained face plate is attached to the surface of the concrete base, and then pressurized and compacted, and then the concrete base is turned over 180 degrees and molded.

In addition, in Fig. 2, aggregate for closing is supplied immediately after supplying aggregate for surface decoration of the concrete matrix, and is pressurized.
In this method, only the face plate is then attached to the concrete matrix, compacted by applying pressure and vibration, and then the concrete matrix is turned over 180 degrees and then demolded.

At this time, as the filler aggregate used in the present invention, sand, soil, slag, ore, shavings of natural stone, synthetic resin, etc. may be used, and the size of the aggregate used for surface decoration Small ones are used, and the size is determined as appropriate depending on the type of aggregate for surface decoration.

In addition, filler aggregates can be selected from a variety of colors to harmonize with decorative aggregates, for example.

For granite, granite shavings may be used, or one with a completely opposite color may be used, and when used as a concrete block, it can be selected as appropriate depending on the location, purpose of installation, etc.

Since the degree of protrusion of the surface decorative aggregate after completion can be adjusted depending on the amount of filler aggregate, the supply amount may be adjusted depending on the purpose.

In addition, when filling aggregate is supplied to the face plate, the surface water is
．． It is preferable to add 0 to 6.0%.

This is to prevent the filler aggregate from falling off the face plate if the filler aggregate is too dry and is crimped to the face plate when crowning is used.

If it is less than 4.0%, it will have little effect, and if it exceeds 6.0%, it will interfere with the bonding with mortar.

Also, a water-soluble adhesive may be added instead of or together with water.

At this time, as the water-soluble adhesive, commercially available glue can be diluted with water and used.

The surface decoration used in the present invention is not particularly limited.

From large to small natural stones can be used, and the type is selected appropriately depending on the purpose of the concrete block.

At this time, as the water-soluble adhesive, it is preferable to use a mortar adhesion enhancer that improves the miscibility, adhesiveness, water resistance, etc. of cement and mortar.

As the mortar adhesion enhancer, for example, polymer emulsion type, acrylic type, ethylene vinyl acetate type 1 synthetic rubber type etc. can be used.

The method of supplying the face plate formed in this way to the concrete base is to invert the concrete base with the decorative surface provided on the first face plate and combine it with the base with the decorative surface provided on the lower side. There is a method of rotating the concrete base by a degree and joining it to the concrete base, and a method of tilting the concrete base at an angle of, for example, 90 degrees or 135 degrees and joining the concrete base using circular movement.

Furthermore, concrete block forming machines use concrete depending on the purpose.

Therefore, even cemented carbide concrete and concrete with large slump can be used as appropriate depending on the purpose.

For example, when using cemented carbide concrete, the degree of hardness of the concrete will vary depending on the compaction method, but regardless of the compaction method, excess water (
It is necessary to prevent aggregates (including cement) from flowing out and contaminating the exposed aggregates at the surface.

However, if the amount of water is too small, the adhesion between the aggregate exposed on the surface and the cemented concrete will be weakened.

Therefore, water (including cement) oozes out during compaction, but the hardness must be such that it does not flow out, and a slump of about 0 to 1 cI11 is appropriate.

It is not limited to this.

After curing, the filler aggregate other than that attached to the concrete can be removed at the same time as the surface pallet is demolded, and the surface of this is treated with water or air to obtain the concrete product of the present invention.

At this time, in the past, the surface was treated by polishing or scraping, but with the present invention, an extremely clean finished product can be obtained by simply spraying air or water lightly, eliminating the pollution caused by waste as in the past. It doesn't even wake me up.

In the present invention, these operations are performed in series.

〔effect〕

INDUSTRIAL APPLICABILITY According to the present invention, by simply making improvements to a conventional production line, it can be applied to various molding machines such as instant demolding type and pour molding type.

When pressurizing with a pressure plate by using filler aggregate.

Conventionally, when there were aggregates of various sizes, only the large aggregates that touched the pressure plate were pressurized, and the hidden small decorative aggregates were not bonded well to the concrete surface, and later only the small decorative aggregates were pressed. However, since the filler aggregate covers the surface decorative aggregate, if pressure is applied from above, the force will be evenly distributed to each aggregate and it will be bonded to the base material.

Furthermore, the decorative aggregate will not shift due to the closing aggregate until the molded product is cured, and the decorative surface will be protected during transportation.

Furthermore, the bare surface of the concrete is not exposed at the joints, and exposed concrete blocks made of natural stone, which are natural products, can be mechanically and efficiently mass-produced.

At this time, with the conventional splitton block.

In reality, fine cosmetic aggregates of a certain size were only slightly exposed on the surface, but in the present invention, cosmetic aggregates ranging from large to small, as well as unspecified size combinations can be used. The aggregate can be made to protrude much further than before, and the beauty of natural stone can be fully exhibited even on concrete blocks.

Furthermore, since mechanical mass production is now possible, production costs are significantly lower than conventional products, and work efficiency is further improved.

Furthermore, since various natural stones can be used for the surface, various designs can be created by combining them, so when used for residential land development, stone walls, and landscaping work, the texture and individuality of natural stones can be reproduced. Furthermore, when used in civil engineering works such as embankments, riverbeds, and tunnel entrances and exits in national parks and other parks, it harmonizes with the natural environment and contributes to environmental protection.

Furthermore, there is no longer any fear of pollution caused by dust and waste, as was the case in the past.

[Brief explanation of the drawing]

FIGS. 1 and 2 are diagrams schematically showing the steps of the present invention. 1: Concrete base 2: Aggregate for surface decoration 3: Face plate 4: Aggregate for sealing 5: Pressure plate Patent applicant: Fuji Special Concrete Industry Co., Ltd., Garuyo Ironworks Co., Ltd.

Claims (2)

[Claims] (1) In the method of forming natural stone concrete blocks, the concrete matrix is molded into the desired shape, and decorative aggregate is spread at arbitrary intervals on the surface to be decorated immediately after molding or after a certain period of time has elapsed. A method for producing a natural stone concrete block, which comprises crimping a face plate filled with aggregate, then applying pressure and vibration, inverting the concrete matrix, and then removing the mold. (2) In the method of forming natural stone concrete blocks, decorative aggregate is laid at arbitrary intervals on the surface of the concrete matrix molded into the desired shape, which is to be decorated immediately after molding or after a certain period of time, and then filler A method for producing a natural stone concrete block, which comprises: inserting materials, crimping a face plate, applying pressure and vibration, inverting the concrete matrix, and then removing the mold.