JPH0255104A - Preparation of decorative concrete member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention is directed to a PC wall body or PC wall body with an uneven pattern on one surface.
This invention relates to a method for manufacturing decorative concrete members such as C columns.

"Prior art, problems to be solved by invention" Generally,
There are many cases in which various patterns are applied to the surface of concrete members such as PC walls and pillars in order to harmonize with the environment of the area where they are installed.

As shown in Fig. 4, the conventional manufacturing method for producing such decorative concrete members is to attach a rubber mold with an uneven pattern to the inner surface of the formwork with adhesive, etc. A common method is to fill it with concrete and form it into one piece, then dismantle the formwork and remove the product with the uneven pattern transferred from the mold.

However, in the conventional manufacturing method described above, if the pattern is too uneven, the weight of the concrete will forcefully bite into the uneven surface.
There were problems in that it was difficult to separate the rubber mold and the product and demold the product, and the rubber mold could be deformed or damaged.

In addition, when using a rubber mold for existing steel formwork, for example, if the height of the convex part of the rubber mold is large, the concave part of the concrete product to be formed will also be large, and the concrete from the four parts and the reinforcing reinforcing bar part will be large. There have been various problems such as the fact that the fog thickness cannot be ensured, and the dimensions of the uneven pattern are limited in relation to the fog thickness.

"Means for Solving the Problems" In order to solve the above-mentioned conventional problems, the present invention is based on a template in which an uneven pattern is transferred in advance to the surface of a thin plate of fiber-reinforced concrete or mortar, and concrete is cast on the back side of the template. By setting concrete in a formwork so that it is shaped like the above, and pouring concrete into the formwork to integrate it with the template, any pattern or coloring can be applied regardless of the size or shape of the unevenness of the pattern. It is very easy to mold concrete parts and demold them, and it is economical because expensive colored concrete can be applied only to thin plates.Furthermore, the fogging thickness can be adjusted freely, and the pattern has large irregularities and has a good appearance. This invention proposes a method for manufacturing decorative concrete members that allows concrete members to be obtained economically.

"Embodiments" Below, embodiments of the present invention shown in the drawings will be described.
Prior to forming the decorative concrete member 1, as shown in Fig. 1, a thin template 2 with an uneven pattern transferred onto the surface using fiber-reinforced concrete with excellent formability such as GRC or CFRC or mortar and further colored. Shape it.

Any method may be used to manufacture this template 2.1 For example, a rubber mold with a desired uneven pattern formed on the surface is placed in a mold for forming the template, and colored pigments are poured into the mold. It is formed by pouring a thin layer of fiber-reinforced concrete or mortar with or without mixture.

In this case, since the fiber-reinforced concrete or mortar is poured thinly, the pressure of digging into the unevenness of the rubber mold is small, and the mold can be easily removed regardless of the size of the unevenness, and deformation and damage to the rubber mold can be reduced.

As shown in FIG. 2, the template 2 with the surface decorated in this way is placed in the formwork 3 so that concrete is placed on the back side, and the surface is covered with double-sided adhesive tape 4 or the like. It is set by adhering to the inner surface of a frame 3, and concrete 5 is poured into this form 3 to form a decorative concrete member l integrated with the template 1.

In this case, the embodiment shown in Fig. 1.2 shows an example in which a plate-like wall is formed, but as shown in Fig. 3, the template 2 is formed into a semicircular arc plate shape, and the pair of templates 2 are stacked in a cylindrical shape and loaded into the cylindrical rotary mold frame 3', which is divided into two parts, and this mold frame 3'
It is also possible to form a hollow concrete column with an uneven pattern or colored decoration on the surface by filling the inside with concrete and performing centrifugal force forming.

The template 2 may be attached to the frame 3 not only with double-sided adhesive tape, but also with fixing means such as bolts.

"Effects of the Invention" As described above, according to the present invention, a template having an uneven pattern transferred in advance to the surface of a thin plate of m-fiber reinforced concrete or mortar is placed in the formwork so that concrete is placed on the back side of the template. concrete is set in the formwork, and concrete is poured into this formwork to integrate it with the template. Therefore, any pattern can be applied regardless of the size or shape of the uneven pattern, and it is not necessary to remove the mold from the uneven pattern. Concrete parts can be molded and molded very easily, and when coloring is needed in addition to uneven patterns, expensive colored concrete can be applied only to thin plates, which is economical, and the fogging thickness can be reduced. It is also possible to obtain a decorative concrete member with a good appearance and a large pattern of irregularities that can be removed freely.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a template used in the present invention. FIG. 2 is a longitudinal sectional front view showing the forming state of a plate-shaped decorative concrete member according to the invention. FIG. FIG. 4 is a longitudinal sectional front view showing the forming state of a conventional decorative concrete member. 1. Decorative concrete parts, 2. Template, 3.3゛
・Formwork, 4...Double-sided adhesive tape. 5. Concrete.

Claims (1)

[Claims] 1) A template with an uneven pattern transferred onto the surface of a thin plate of fiber-reinforced concrete or mortar is set in a formwork so that concrete will be poured on the back side of the template, and concrete is poured into this formwork. A method for manufacturing a decorative concrete member, characterized in that the decorative concrete member is integrated with the template.