JPS63295206A - Forming joint in pc plate preset technique - Google Patents

Abstract

PURPOSE:To make it possible to form easily and speedily, by arranging tiles face to face on a bed face of a frame, pouring thereon concrete, taking out of the mold after hardening, forming grooves along the sides of the tiles by means of a cutter and filling a joint filler therein. CONSTITUTION:Tiles 1 are arranged on a bed 5 of a frame in such a way that the sides of the tiles 1 are arranged face to face. Then, concrete 11 is thereon poured and mold release is done after the concrete 11 is hardened. Then, grooves 10 are cut along the sides of the tiles by means of a proper cutter 9 such as a diamond cutter and the like. Joint gaps are thereby formed. After that, a joint filler 12 is filled in the grooves 10 to form a joint. It is thereby possible to carry out the operation very easily and speedily. Moreover, joint fillers, sand and so on are not needed and taking off them after mold release is not necessary, either. The grooves 10 are accurately straight and the continuous joints formed are also accurately straight.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a joint forming method in a PC board tipping construction method, and particularly relates to a forming method that can accurately form through joints.

[Conventional technology] The PC board prep method is a method that was developed along with the shift to prefabricated buildings, and when manufacturing concrete boards at a PC board factory, tiles are arranged on the form bed surface in advance and then concrete is applied. This involves manufacturing PC boards that are poured and covered with tiles.

Conventional methods for forming joints in PC board tipping include the tile sheet method, the joint method, and the left joint method. The tile sheet method includes the grain method, retarder blending adhesive method, retarder penetration method, paper lattice method, film lattice method, PC pack N-type method, and the like. Among these, in the sand joint method, as shown in Fig. 5, a tile sheet 4 in which tiles 1 are pasted on paper 3 via adhesive 2 is placed on a form bed (W4 bed) 5. Then, sand 6 is filled between the tiles 1, and then concrete is placed on the tile sheet 4. After the concrete hardens, it is demolded and the sand 6 is removed to form joint gaps.

In the joint method, as shown in Fig. 6, a rubber joint block 7 is attached to a steel bed 5, tiles 1 are fitted into the rubber joint blocks 7, and then concrete is placed. . After the concrete has hardened, it is demolded and the rubber joint squares 7 are removed to form joint gaps.

As shown in Fig. 7, the laying joint method is to place rubber,
The tiles 1 are arranged with a joint material 8 made of foamed plastic or the like interposed between the tiles 1, and then concrete is poured. After the concrete hardens, it is demolded and the plate joint material 8 is removed to form a joint gap.

A joint is formed by filling the joint gap thus formed with a joint filler.

[Problems to be Solved by the Invention] When forming through joints by the above-mentioned conventional joint forming method, there is a problem that the joints are difficult to align in a straight line. In other words, in the rubber joint method and the left joint method, the tiles 1 are arranged by hand on the steel bed 5, and the sides of the tiles 1 may not be straight lines due to arrangement errors or dimensional errors in the tile position. The joints are not aligned and tend to be bent. In addition, tile sheet methods such as the grout method use a tile sheet in which tiles are pasted on paper or film, but even in this tile sheet, the sides of the tiles 1 can be arranged in a straight line. This is not easy for the same reason as above, and it is difficult to align the joints of the manufactured tile PC board in a straight line.

In addition, this problem of difficulty in aligning the joints is especially common in 3
This is noticeable in the case of large tiles of 00 mm x 300 mm or more. This is because as the tiles become larger, the length of one side becomes longer, making it easier to see irregularities on the sides.

[Means for Solving the Problems] The method of forming joints in the PC board tipping method of the present invention is to arrange the tiles against the formwork bed surface, then pour concrete, and after the concrete has hardened. The mold is removed, a groove is cut along the side of the tile with a cutter, and the groove is filled with a joint material.

[Operation] Since the joint forming method of the present invention forms joint gaps by cutting grooves with a cutter, the joints are accurately straight. Further, when arranging the tiles on the form bed surface, it is not necessary to take great care to align the tile sides in a straight line. Furthermore, there is no need to arrange or remove joint materials, and the tile PC board can be manufactured easily.

[Example] Examples will be described below with reference to the drawings.

In the method of the present invention, first, tiles 1 are arranged on a form bed 5 as shown in FIG. After it hardens, it is removed from the mold. And the third
As shown in the figure, a groove 10 is cut along the side of the tile position using a suitable cutter 9 such as a diamond cutter. This forms a joint gap. Thereafter, as shown in FIG. 4, the groove 10 is filled with a joint material 12 to form a joint.

In this way, in the method of the present invention, when arranging the tiles 1 on the form bed 5, it is only necessary to arrange the tiles 1 so that the sides of each tile 1 are butted against each other, so the process can be carried out extremely simply and quickly. In addition, there is no need for joint material, sand, etc.
Its removal after demolding is also unnecessary. In the method of the present invention, since the groove 10 is cut by the cutter 9, the groove 10 is accurately linear, and the formed through joint is also accurately linear.

[Effects] As described above, according to the method of the present invention, linear through joints can be formed extremely easily and quickly.
In particular, it is suitable to apply the construction method to PC board tipping of large tiles of about 300 mm square or more.

[Brief explanation of drawings]

1, 2, 3, and 4 are sectional views for explaining the method of the present invention, and FIGS. 5, 6, and 7 are sectional views for explaining the conventional method. 1... Tile, 5... Form bed, 9...
··cutter.

Claims (1)

[Claims] (1) After arranging the tiles against the formwork bed surface, pour concrete, remove the mold after the concrete hardens, cut grooves along the sides of the tiles with a cutter, and form joints in the grooves. A method for forming joints in a PC board advance construction method characterized by filling with material.