JPH06126717A - Production of pc product having finish material driven therein - Google Patents

Abstract

PURPOSE:To increase the strength of concrete and the bonding strength of a finish material subjected to drive-in molding and to increase the height of the rising part of a form by preventing the generation of bleeding water using concrete of zero slump and adding vibration and pressing force to the concrete cast into the form. CONSTITUTION:Finish materials 30 are temporarily clamped to a fixing panel 32 and the fixing panel 32 is set to the inside of an outer form 16 in a separable manner (process (1)). Concrete 34 of zero slump is cast into the space part 18 between inner and outer formes 14, 16 in this state and vibration is applied to the outer form 16 to apply a pressing force to the cast concrete 34. Next, the inner and outer forms 14, 16 are pulled out upwardly in such a state that the fixing panel 32 is bonded to the finish materials 30 to perform demolding process (2)). Next, the concrete 34 is aged by steam and separated from the finish materials 30 to detach the fixing panel 32 (process (3)).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention temporarily fixes a finishing material such as tiles or stones on the side of a mold when manufacturing it by placing concrete on the mold at the rising portion.
The present invention relates to a method for manufacturing a PC product, which is formed by driving into the surface of cast concrete.

[0002]

2. Description of the Related Art In recent years, P has been used to simplify the construction method.
C product (precast concrete construction material)
Has come to be widely used, and it has become possible to significantly reduce labor and shorten the construction period. The PC product is manufactured by placing concrete in a mold formed according to its purpose.

[0003] By the way, conventionally, there is a structure in which a finishing material such as a tile or a stone material is attached to a wall surface or a pillar of a building so as to improve the design value thereof. It is generally attached to the surface by hand. However, the attachment of this finishing material requires a high degree of skill, which makes it extremely difficult to secure workers and significantly lengthens the construction period. Therefore,
When precasting the concrete building material manufactured as a PC product, at the same time, by casting the finishing material on the surface of the concrete, it is possible to eliminate the application of the finishing material on the site, resulting in remarkable labor saving and The work period can be shortened, and eventually the finishing material can be prevented from peeling off.

FIGS. 4 and 5 show an example of a molding frame 2 in which the finishing material 1 is driven and molded. The frame 2 is formed in an L shape by a horizontal portion 2a and a rising portion 2b. Has been done. Then, the finishing material 1 such as tiles is temporarily fixed to the inside of the formwork 2 covering the outside, and the concrete 3 is placed in the formwork 2 in this state, and the concrete 3 is placed by demolding. The finishing material 1 can be easily driven into the surface of (construction material made of concrete). In addition, in the formwork 2 shown in FIG. 4, after the concrete 3 cast on the horizontal portion 2a is hardened, the concrete 3 is cast on the rising portion 2b.
The formwork 2 shown in FIG. 1 is constructed such that the horizontal portion 2a and the rising portion 2b are integrally enclosed and the concrete 3 is cast at one time.

[0005]

However, in the conventional method of manufacturing a PC product in which a finishing material is driven, in any of the molds 2 shown in FIGS. 4 and 5, the rising portion 2b is formed. When concrete is poured into the concrete, breathing water particularly affects the upper portion of the rising portion 2b, resulting in a decrease in the strength of the concrete or a decrease in the adhesive force of the finishing material. For this reason, it is necessary to suppress the height h of the rising portion 2b to be low, and there is a problem that the shape of the product is greatly restricted.

In view of the conventional problems, the present invention prevents the generation of breathing water by using zero slump concrete, and applies vibration and pressure to the concrete placed in the formwork. To provide a method for manufacturing a PC product in which a finishing material is driven, which is capable of increasing the strength of concrete and increasing the adhesive force of a finishing material to be driven and thereby increasing the height of a rising portion of a formwork. To aim.

[0007]

To achieve the above object, the present invention is to temporarily fix a finishing material such as tiles or stones to the formwork side when placing concrete on the formwork at the rising portion. In the method of manufacturing a concrete building material, in which this finishing material is driven and formed on the surface of the placed concrete, zero slump concrete is placed and placed with vibration applied to the formwork. The method is to demold the concrete after further pressing it.

Further, in order to achieve the above object, the present invention is as follows.
Temporarily fix finishing materials such as tiles and stones to the formwork side beforehand,
In this method of manufacturing a concrete building material, in which the finishing material is driven and formed on the surface of the placed concrete, the finishing material is temporarily fixed to a fixing panel separate from the formwork, and this fixing panel is After setting on the formwork,
Zero slump concrete is placed with vibration applied to this formwork, and after this placed concrete is further pressurized, it is demolded with the fixing panel attached to the concrete, and then the concrete is steamed. The fixing panel will be removed after curing.

[0009]

In the method of manufacturing a PC product in which the finishing material of the present invention having the above-described structure is used, when the finishing material is temporarily fixed to the formwork side, concrete is poured into the rising part of the formwork. , Since the concrete of zero slump is placed in a state where vibration is applied to the formwork, and the placed concrete is further pressed, the mold is released, so that breathing water is generated by using the concrete of zero slump. Can be prevented. Further, in combination with the fact that the generation of breathing water can be prevented in this way, it is possible to increase the strength of concrete by applying vibration and pressure to the concrete placed in the formwork to condense it. At the same time, the adhesive force of the finishing material can be greatly increased.

Further, in the present invention, the finishing material is temporarily fixed to a fixing panel which is separate from the mold, the fixing panel is set on the mold, and then the zero slump is applied to the mold with vibration. By pouring the concrete and removing the mold with the fixing panel attached to the concrete side, it is possible to reliably prevent the finishing material from shifting when the mold is removed from the mold. Then, after the mold is removed, the concrete is steam-cured with the fixing panel attached, and then the fixing panel is removed, whereby the binding force of the finishing material driven into the concrete can be remarkably increased. Even in this case, the use of zero-slump concrete will prevent the generation of breathing water, and the concrete placed in the formwork will be vibrated and pressed to condense it. Can be enhanced.

[0011]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of a method for manufacturing a PC product in which a finishing material according to the present invention is driven,
FIG. 1 is an explanatory view showing an embodiment of a PC product molding frame used in the manufacturing method of the present invention, FIG. 2 is an explanatory view showing a PC product manufacturing procedure in which a finishing material is driven in sequence, and FIG.
FIG. 3 is a perspective view showing an embodiment of a PC product manufactured by the manufacturing method of this embodiment.

In other words, in this embodiment, the pillar product P is used as a PC product.
The C form 10 (see FIG. 3) is shown as an example, and the P
The C mold 10 is molded using the molding mold 12 shown in FIG. The molding frame 12 is provided with an inner frame 14 and an outer frame 16 each having a rectangular cross-section that is vertically raised. The inner and outer frames 14 and 16 are coaxially fitted and arranged, and both of them are arranged. Zero slump concrete is poured from the hopper 20 into the space 18 formed therebetween. The outer formwork 1
Vibration is applied to 6 by a vibration exciter 22, and the poured concrete is compacted by this additional vibration. In addition, the concrete is compacted by the vibration exciter 22 as described above, and the pressurizer 24 is moved downward to apply a pressure to the concrete.
The concrete is pressed compactly and the solidification of the concrete is promoted. The PC mold 10 for a pillar thus solidified by vibration and pressurization is immediately released from the mold by pulling out the inner and outer mold molds 14, 16 upward in a dry state.

By the way, when the pillar PC mold 10 is manufactured by the molding mold 12, a finishing material 30 such as a tile or a stone is processed by the molding mold 12 to obtain a finishing material 30 of the pillar PC mold 10. It is molded into the surface. That is, when the finish material 30 is driven and formed, first, the finish material 30 is temporarily fixed to the fixing panel 32, and the fixing panel 32 is detachably set inside the outer mold 16 (step). Then, in this state, the inner mold 14 and the outer mold 1
Finishing material 3 of the zero slump in the space 18 between 6 and
After placing 0 and applying vibration to the outer mold 16,
A pressing force is applied to the placed finishing material 30.

Next, the inner mold frame 14 and the outer mold frame 16 are pulled out upward to remove the mold (step). At this time, the outer mold 1
6 and the fixing panel 32 are separated, and the fixing panel 32 is left in a state of being attached to the finishing material 30.

The fixing panel 32 attached to the finishing material 30 is removed after the concrete 34 is steam-cured (step). At this time, the finishing material 30 temporarily fixed to the fixing panel 32 is driven into the concrete 34, and the fixing panel 32 is separated from the finishing material 30 and removed.

Therefore, in the method for manufacturing the pillar PC mold 10 of this embodiment, the use of the zero slump concrete 34 makes it possible to prevent the generation of breathing water. In addition, the concrete 34 is an outer mold 16
It is possible to compact the concrete 34 by placing it in a state in which vibration is applied and pressing the concrete 34 that has been placed. Therefore, the cast concrete 34 can be immediately removed from the mold in a dry state, the productivity thereof can be remarkably improved, the strength of the concrete 34 can be remarkably enhanced, and the adhesive force of the finishing material 30 can be remarkably increased. it can. Therefore, the height h of the raised mold 12 can be made sufficiently high, and even when the finishing material 30 is driven in and molded, the manufacturing of the column PC mold 10 having a certain height. Is possible. Therefore, it is possible to manufacture in a state in which the finishing material 30 for decorating the surface of the pillar PC mold 10 is driven, so that the production efficiency thereof is significantly improved, and further, the cost of the product is significantly reduced. As a result, it is possible to reduce the construction cost.

Further, in this embodiment, the finishing material 30 is temporarily fixed to the fixing panel 32, the fixing panel 32 is detachably set on the outer formwork 16 and concrete 34 is placed, and the fixing is performed. The outer formwork 16 is demolded with the work panel 32 attached to the finishing material 30, and then the concrete panel 34 is steam-cured to remove the fixed panel. Therefore, it is possible to surely prevent the finishing material 30 from being displaced when the outer mold 16 is released from the mold, and at the same time, the concrete 34
It is possible to remarkably increase the binding force of the finishing material 30 that has been driven into.

In this embodiment, a pillar PC is used as a PC product.
Although the form 10 is shown as an example, it goes without saying that the present invention is not limited to this and can be applied to other PC products that are immediately released from the mold.

[0019]

As described above, according to the first aspect of the present invention.
In the method of manufacturing a PC product in which the finishing material as shown in (4) is used, it is possible to prevent the generation of breathing water by using zero slump concrete, and in combination with this, it is possible to prevent the generation of breathing water. By applying vibration and pressure to the concrete placed in the formwork to compact it, the strength of the placed concrete can be increased and the adhesion of the finishing material is greatly increased. be able to. Therefore, the height of the formwork at the rising portion can be made sufficiently high,
The degree of freedom of the shape of the PC product formed by driving in the finishing material can be greatly expanded.

According to the second aspect of the present invention, in the method for manufacturing a PC product in which a finishing material is driven, the finishing material is temporarily fixed to a fixing panel which is separate from the mold, and the fixing panel is used. After the mold is set in the mold and the concrete is poured, the fixing panel is removed with the fixing panel attached to the concrete side, whereby the finishing material can be surely prevented from being displaced when the mold is removed from the mold. After the mold is removed, the concrete is steam-cured with the fixing panel attached, and then the fixing panel is removed, so that the binding force of the finishing material driven into the concrete can be significantly increased. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a PC product molding frame used in the manufacturing method of the present invention.

FIG. 2 is an explanatory view sequentially showing a manufacturing procedure of a PC product into which the finishing material of the present invention is driven.

FIG. 3 is a perspective view showing an embodiment of a PC product manufactured by the manufacturing method of the present invention.

FIG. 4 is a cross-sectional view showing an example of a conventional PC product manufacturing method.

FIG. 5 is a cross-sectional view showing another example of a conventional PC product manufacturing method.

[Explanation of symbols]

10 PC form for pillar (PC product) 12 Forming form 14 Inner form 16 Outer form 22 Exciter 24 Pressurizer 30 Finishing material 32 Fixing panel 34 Zero slump concrete

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ritsuo Matsumura 2-3 Chome, Kandajimachi, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office

Claims (2)

[Claims] 1. When concrete is cast into a mold at the rising portion, a finishing material such as tiles or stones is temporarily fixed to the mold side in advance, and this finishing material is driven into the surface of the cast concrete. In the method for producing a PC product as described above, a zero slump concrete is placed in a state where vibration is applied to the form, and the placed concrete is further pressurized and then demolded. A method of manufacturing a PC product in which a finishing material is driven. 2. When pouring concrete into the formwork at the rising portion, a finishing material such as tiles or stones is temporarily fixed to the formwork side in advance, and this finishing material is driven into the surface of the cast concrete. In such a PC product, the finishing material is temporarily fixed to a fixing panel that is separate from the formwork, and after this fixing panel is set on the formwork, zero slump is applied with vibration applied to this formwork. After pouring the concrete of the above, and further pressurizing this cast concrete, it is removed from the mold with the fixing panel attached to the concrete, and then the fixing panel is removed after steam curing the concrete. A method for manufacturing a PC product in which a characteristic finishing material is driven.