JP2825709B2 - Method of manufacturing concrete secondary products with exterior materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a concrete product for construction and a secondary product for concrete for civil engineering, to which an exterior material such as a tire or a stone is attached.

[0002]

2. Description of the Related Art The work of applying tiles and stones as decorative exterior materials on the surface as the exterior of buildings, and the work of applying tiles and stones as decorative exterior materials to civil engineering concrete products such as parks and roads are increasing year by year. In addition, the number of products that drive tiles and stones into concrete products is increasing year by year.

In recent years, in building construction in the construction industry, as a building material for an exterior building as described above, a product in which a concrete PC board or curtain wall board is pre-attached with an exterior material such as a tile or a stone material is produced in a factory. Fastening to steel frames is becoming common in the construction industry.

[0004] In the construction of parks and general houses, construction is performed with emphasis on aesthetics, such as sticky stones or non-slip tiles.

[0005] In the civil engineering industry, concrete L-shaped blocks are used for residential land development and road retaining work. However, since the surface is concrete, there is an aesthetic problem. In order to make products more luxurious, it is common to pile up building stones.

Conventionally, as a method of driving an exterior material into these concrete products at a factory, for example, Japanese Patent Application Laid-Open No. 62-14 / 1987
As shown in No. 8209, an exterior material is laid on the bottom of the formwork, a molten molding agent is injected between the joints and hardened, then concrete is poured, and after curing, demolded,
Thereafter, a method for removing the molding agent between joints has been proposed.

According to this method, the surface and joints of the exterior material can be completely covered with the molding agent, regardless of the exterior material of any surface, and even if concrete is poured, concrete milk infiltrates the surface. Therefore, there is an advantage that a concrete secondary product having a beautifully finished surface can be obtained even if an exterior material having any shape or any surface is used.

[0008]

However, in the conventional manufacturing method as described above, the molding agent adhering between joints on the surface of the concrete product is removed after demolding the concrete product. There is a problem that a single heat source is required for removing the agent, and the production cost is correspondingly high.

Further, if the molding agent is removed after demolding, the molten molding agent flows out and scatters around, and a large-size recovery facility is required to recover the molding agent. There is a problem in that the efficiency of collecting and reusing the agent is extremely low, and the production cost is correspondingly high.

[0010] Accordingly, an object of the present invention is to melt the molding agent substance by using the curing heat of concrete, thereby reducing heat energy and recovering and reusing the substance with high efficiency without using a separate recovery device. It is an object of the present invention to provide an economically advantageous method for producing a concrete secondary product with an exterior material attached thereto.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention of claim 1 arranges exterior materials such as tiles and stones at a designated shape position on a concrete secondary product formwork. Then, a liquid material of a substance that transforms from a solid state to a liquid state or from a liquid state to a solid state due to heat change is poured into a mold, and the exterior material and the liquid substance are integrated, and the liquid substance is naturally or forcibly cooled. A method of manufacturing a concrete secondary product with an exterior material attached, in which concrete is poured into a formwork in a state where the solidified material is removed, and then solid material is removed from the molded concrete. In order to remove the concrete poured into the mold, the solid substance is melted into a liquid material in the mold by heat applied to cure the concrete before the concrete is removed from the mold, and the liquid is taken out of the mold and collected. Is adopted.

In the present invention, for example, a liquid paraffin is used as a substance which transforms from a solid state to a liquid state or from a liquid state to a solid state due to a thermal change in the joint material. The joint is completely sealed and the depth of the joint is freely adjustable.

[0013] Further, since the concrete poured in is gradually clumped, and the concrete paste and the like do not flow out to the completely sealed formwork surface, the surface of the exterior material has any cracked shape. There is no problem that concrete flows to the surface.

After the concrete is hardened, when the product is cured by heat such as nourishment, paraffin begins to melt and becomes liquid.
The paraffin is collected from the mold, and only the concrete product remains in the mold, and then the mold is removed.

According to a second aspect of the present invention, there is provided a concrete secondary product mold, comprising a tile or a stone or other exterior material arranged in a specified shape and a solid to liquid or a liquid to solid by heat change. A solid material of a substance that deforms is put in, and the solid material is first made into a liquid material by applying heat, integrated with the exterior material, and then the liquid material is solidified by natural or forced cooling. A method of manufacturing a concrete secondary product with an exterior material attached thereto, in which concrete is poured into a mold in a state and solid substances are removed from the molded concrete. Before releasing the concrete placed in the mold, the solid substance is melted into a liquid material in the mold by heat applied to cure the concrete, and is taken out of the mold and collected. is there.

[0016]

Function: Concrete PC formwork, curtain wall formwork, concrete L-type retaining block formwork, concrete plate formwork, sidewalk concrete block formwork, concrete fence formwork. Are placed side by side, and the paraffin dissolved in liquid form is poured into this to create a state in which the lower part of the exterior material is completely immersed in liquid paraffin.

In this manner, no matter what the surface shape of the exterior material has, the surface of the exterior material and the space of the exterior material are all filled with paraffin, regardless of the surface shape of the exterior material or the size of the exterior material. The exterior material is installed inside.

Paraffin solidifies naturally over time. In the case of solidification in an early time, water or cold air is sent, or solidification is forcibly performed in a cooling room or the like. In this way, a solid object in which the lower part of the exterior material and the paraffin are integrated is completed.

A mortar for coloring joints or concrete is poured into this and poured. Although the mortar or concrete flows into a part that is not integrated with the paraffin, infiltration into the surface of the exterior material can be completely prevented.

The poured concrete waits for the concrete to solidify at a temperature lower than the melting temperature of paraffin.
After a lapse of a predetermined time, the concrete is solidified, and then the concrete is cured. When the concrete curing temperature exceeds the melting temperature of paraffin, the paraffin melts and the paraffin becomes liquid.

The liquid paraffin flows out of the mold by opening a plug in a hole (paraffin removal hole) at the bottom of the mold. Only the composite material in which the exterior material and the concrete are integrated remains in the formwork, and if this is cured at a predetermined temperature for a predetermined time, a strong concrete product can be obtained. The concrete composite product in the formwork has a beautifully finished exterior material, and the shape of the product is a standardized uniform product according to the shape of the formwork. Thereafter, the mold is separated, the product is taken out, and a concrete product with an exterior material attached to the surface is completed.

The paraffin melted by nourishment or high-temperature water in the mold is taken out of the mold, separated into paraffin and water by the difference in specific gravity between water and paraffin, and only the paraffin portion is collected and re-used. Can be used.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a partial sectional view of an L-shaped earth retaining concrete block before casting concrete, and shows an L-shaped formwork 11.
Are arranged in the designated shape position with the surface side facing down on the bottom 12 of the. In this case, when the exterior material has a poor resting, powder such as sand may be put in a mold and the exterior material may be disposed thereon. Next, the melted liquid paraffin 14 is poured, and the lower part of the exterior material 13 is completely in contact with the liquid paraffin 14.

The liquid paraffin flows so as to cover even the uneven surface on the surface side of the split-stone exterior material 13, and after the passage of time, solidifies naturally in sequence to fix the exterior material 13 in a predetermined shape.

As shown in FIG. 2, concrete 15 is cast, and the finishing surface 16 is finished with a finishing iron. The poured concrete 15 gradually gathers, but the paste or the like of the concrete 15 does not flow out to the bottom surface of the formwork 11 completely sealed by the paraffin 14, and has a cracked surface like the exterior material 13. Also, the concrete 15 does not come into contact.

After the concrete 15 has solidified, it is cured by aeration or the like. When the curing temperature exceeds the melting temperature of the paraffin 14, the paraffin 14 begins to melt and becomes liquid. After that, by opening a plug of a hole (not shown) provided on the lower surface of the mold 11, the paraffin 14 flows out of the mold 11,
As shown in FIG. 3, only the composite material in which the exterior material 13 and the concrete 15 are integrated remains in the mold 11.

After the concrete is cured at a predetermined temperature for a predetermined time to increase the strength of the concrete, the product is removed from the formwork 11 and, as shown in FIG. 4 or FIG. The finished product is obtained.

[0029]

As described above, according to the present invention, a substance that transforms from solid to liquid or from liquid to solid due to heat change is added to the concrete to cure the concrete when the substance is removed from the concrete. Since heat is used, there is no need to use a separate heat source for removing the substance, heat for curing concrete can be effectively used, and heat energy costs can be reduced.

Further, since the substance is melted into a liquid material in the mold before the concrete is released from the concrete, the mold becomes a collection container for the substance, and the entire amount of the substance is surely collected without using a separate collection device. Can be used repeatedly, leading to cost reduction.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which an exterior material and liquid paraffin are placed in a mold.

FIG. 2 is a cross-sectional view showing a state where concrete is poured after closing a formwork.

FIG. 3 is a cross-sectional view of the mold after paraffin has been melted out.

FIG. 4 is a cross-sectional view of a concrete composite product taken out of a mold.

FIG. 5 is a front view of the concrete composite product taken out of the formwork.

[Explanation of symbols]

 Reference Signs List 11 formwork 12 bottom of formwork 13 split skin stone exterior material 14 paraffin 15 concrete 16 finish surface

Claims (2)

(57) [Claims] 1. An exterior material such as a tile or a stone is arranged at a designated shape position on a formwork for a secondary concrete product, and a material which is transformed from a solid to a liquid or from a liquid to a solid by a heat change. The liquid material was poured into the mold, the exterior material and the liquid material were integrated, concrete was poured into the mold in a state where the liquid material was solidified by natural or forced cooling, and then molded. A method for producing a secondary product of an exterior material-attached concrete for removing a solid substance from concrete, wherein the concrete is cured before removing the concrete placed in a formwork in order to remove the solid substance. A method for producing a concrete secondary product with an exterior material, characterized in that a solid substance is melted into a liquid substance in a mold by heat applied for the purpose, and is taken out of the mold and collected. 2. A concrete secondary product form is provided with an exterior material such as tiles or stones arranged in a designated shape and a material which is transformed from solid to liquid or from liquid to solid by heat change. The solid material is put into the mold by first applying heat to make the solid material into a liquid material and integrating it with the exterior material, and then allowing the liquid material to solidify by natural or forced cooling. A method of manufacturing a concrete secondary product with an exterior material attached thereto, in which concrete is poured into the concrete, and thereafter, a solid substance is removed from the molded concrete, and the concrete poured into a formwork in order to remove the solid substance. Before the demolding, the solid material is melted into a liquid material in the mold by heat applied to cure the concrete, and this is taken out of the mold and collected, and the exterior material is pre-attached to the concrete secondary. Product manufacturing method.