JPH0457829B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for placing decorative concrete.

When pouring decorative concrete into a retaining wall, a special formwork is required, so a large number of formworks with protruding decorative surfaces are produced in a factory and transported to the site.

Then, there is a method in which formwork is installed side by side with an interval equal to the thickness of the concrete wall between it and the retaining wall, concrete is poured between the retaining wall surface and the formwork, and after curing, the formwork is dismantled. However, this method has the following problems.

(a) Costs increase because it is necessary to prepare expensive decorative concrete formwork in a number corresponding to the area to be poured.

(b) It takes time and effort to transport large quantities of formwork produced in factories to the site.

(c) Installation and dismantling work is inefficient because a large number of small-area formworks are used.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for placing decorative concrete that can improve construction efficiency and reduce costs.

Next, one embodiment of the present invention will be described based on the drawings.

(B) Factory production of mother form (Figs. 1 and 2) A plate-shaped mother form 2 whose surface is decorated with irregularities and the like is produced in a factory using rubber, urethane, etc. as a material.

A small number of mother forms produced in a factory are transported to the site.

(b) Installation of the mother formwork (Figs. 3 and 4) Place the plate-shaped mother formwork 2 parallel to the retaining wall 4 with the decorative surface 21 of the mother form 2 facing the retaining wall surface 41 on which concrete will be poured. Install.

At this time, the distance between the mother formwork 2 and the retaining wall 4 is set to the width of the required thickness of the concrete wall.

Stoppers 3 are provided at both left and right ends of the mother formwork 2, and the ground 1
A space for pouring concrete is created by a retaining wall surface 41, a mother formwork 2, and a stopper material 3.

(c) Making a molded wall from the mother formwork (Figs. 5 and 6) Ground 1, retaining wall surface 41, decorative surface 21 of the mother form 2,
Concrete is then placed in the space surrounded by the left and right stoppers 3.

When the mother formwork 2 is dismantled after the concrete has cured, a ground 1, a retaining wall surface 41, a decorative surface 21 of the mother formwork, and a molded wall 5 separated by left and right retaining materials 3 are created.

(d) Foam duplication of foam formwork (Figs. 7 to 8) Facing the decorative surface 51 of the cast molded wall 5,
Holding plates 6 without decorative surfaces are installed at intervals comparable to the thickness of the mother formwork 2, and stoppers 3 are provided at both left and right ends of the holding plates 6 and on the side surfaces of the concrete wall.

A foaming material 7 such as urethane elastomer is foamed in a space surrounded by a holding plate 6, a decorative surface 51 of a molded wall 5, a ground 1, and a stop material 3.

At this time, it is effective for strength to place a reinforcing material 71 such as glass cloth close to and parallel to the holding plate 6.

After urethane foaming, the presser plate 6 is disassembled to obtain a foam child form 7 having a similar shape to the factory-produced mother form 2.

<E> Placing a concrete retaining wall Use the foamed child formwork 7, which has the same decorative surface as the mother formwork 2, as a formwork for the other retaining wall surface, and perform the same process as the fabrication of the molded wall 5 from the mother formwork 2. A molded wall will be made.

By repeating this process one after another and applying it to the entire area to be poured, the required decorative concrete placement is completed.

Since the present invention is as explained above, the following effects can be expected.

<B> Since the minimum number of mother forms is required to be produced in a factory, the production of mother forms can be done in a short time and at low cost.

<B> When transporting the factory-produced mother formwork to the site, only a minimum number of formworks are required instead of a large number of formworks as in the past, so transportation time and costs can be reduced.

〈C〉 Since the foam formwork produced on-site can be increased in a rat-like fashion, work efficiency can be improved.

[Brief explanation of the drawing]

Figures 1 and 2: An explanatory diagram of the mother formwork produced in the factory,
Figure 3: Perspective view when factory-produced mother form is installed, Figure 4: Cross-sectional view when factory-produced mother form is installed, Figure 5: Dismantling mother form after concrete pouring. Fig. 6: A cross-sectional view when the mother formwork is dismantled after concrete pouring, Fig. 7: A perspective view when a holding plate is installed and urethane is foamed, Fig. 8:
Cross-sectional view when urethane is foamed with a pressure plate installed. 1... Ground, 2... Mother formwork, 3... Stopping material, 4
... Retaining wall, 5 ... Molded wall, 6 ... Holding board, 7
...Foam formwork.

Claims (1)

[Claims] 1. A small number of factory-produced mother forms with decorative surfaces are transported to the site, decorative concrete is poured into a part of the retaining wall using the mother formwork, and the decorative concrete and the retaining plate are combined with each other. In between, create a foam formwork by injecting and foaming urethane, use the foam formwork to pour decorative concrete on other retaining walls, and repeat the above process to create the foam formwork in a mouse-like manner. A method for placing decorative concrete, which is characterized by increasing the amount of concrete.