JPS61202803A - Manufacture of tile-lined concrete panel - 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 Field of Application> The present invention relates to a method for manufacturing concrete panels that makes it possible to easily and reliably manufacture large quantities of tiled concrete panels.

<Prior art> Recently, tiles, stones, etc. (hereinafter simply referred to as tiles) have been increasingly used for pavement surfaces, floors, walls, etc. (hereinafter simply referred to as walls). When installing tiles on walls, there are two methods: one is to directly install tiles on-site, and the other is to create a concrete panel with a large number of tiles pasted in a factory and then install this concrete panel on-site.

However, the former has drawbacks such as a lack of skilled workers, long construction periods, and difficulty in repair.Also, the latter has the following laws: This method requires a large number of skilled workers and has the disadvantage of increasing costs due to the amount of precasting.On the other hand, pre-casting is a method in which the tiles are laid in a formwork and then concrete is poured; The tile sheet method involves laying the tiles into a formwork while burying string-like material in advance to create deep joints between the tiles, and the tile sheet method in which tiles are placed individually into a formwork with a ``first'' provided in advance to secure the tiles. There are two types of joint-first method, in which the joints are laid side by side.In the former method, it is difficult to remove the strings after hardening, the depth of the joints is not constant, and the cement paste wraps around and adheres to the tile surface, so it is difficult to remove the strings after hardening. The latter has the disadvantage that it takes time, and in the latter case, due to errors in the size of the tiles, the paste wraps around and adheres to the tile surface, which takes time to remove after curing, and the ``first'' elasticity is lost due to hot air curing. However, the above-mentioned phenomenon is further exacerbated, and since the tiles must be individually fitted onto the formwork, the work is time-consuming.

<Problems to be Solved by the Invention> The present invention relates to a completely new technology developed in view of these drawbacks of the conventional technology, and particularly relates to a method for mass-producing tiled concrete panels at low cost using a simple method. This is what we are trying to provide.

Means for Solving the Problems〉 To specifically explain one embodiment of the method according to the present invention, in the present invention, first, s is applied to the surface of paper having a predetermined thickness and strength, such as kraft paper. After applying a setting retarder such as oxycarboxylate, silifluoride, polyhydroxy compound, etc. and drying, this is accurately cut into a size of about 30 cm square to make a setting retarder coated paper. Next, a large number of tiles are accurately pasted on the surface of this coated paper using water-soluble glue while maintaining gaps of width that match the predetermined joint dimensions, and then the coated paper is attached to the bottom plate of the flat formwork. After that, mortar using sand with a maximum grain size of 3 fl is poured into the formwork to a thickness of about 25 m, and then regular concrete is placed on top of it to a specified thickness. Pour concrete.

Furthermore, after the last concrete poured has hardened (usually the day after pouring), the whole is demolded, the coated paper mentioned above is peeled off from the tiles and the mortar filled in the gaps between these tiles, and then water jet is applied. By washing off the uncured portions of the tile surface and the surface of the mortar that have hitherto been in close contact with the coated paper, it is possible to manufacture a tiled concrete panel having predetermined groove-like joints between the tiles.

<Example> In order to precisely adjust the depth of the groove-like joints formed between the tiles in the above example, sugars, oxycarboxylic acid salts, silicofluorides, polyamides, etc. applied to the coated paper were used. It can be automatically controlled by increasing or decreasing the amount of a hydroxy compound or the like on the setting retardant side.

<Effects of the Invention> As described above, the method according to the present invention uses paper coated with a setting retarder, thereby allowing the cement paste etc. that adheres to the tile surface and the mortar filled between the tiles to a certain depth. Since it prevents condensation until the paper is peeled off, cement paste and mortar on the surface of the tiles can be easily and reliably washed away, and the surfaces of the tiles and joints can be completely washed away. , it is possible to mass-produce beautiful, high-quality tiled concrete panels at low cost.

Furthermore, by implementing this method, it is possible to easily position the tiles, to determine the joint width easily and reliably, and to quantify the set retarder to be adsorbed. It also has features such as being able to control the depth.

Claims (1)

[Claims] After affixing a large number of tiles, stones, etc. to the surface of the paper coated with a setting retarder, keeping a predetermined gap between each other, these are set in a mold with the paper facing downwards, and then the mold is placed. Mortar or concrete is placed in the frame, and after the mortar or concrete has hardened, it is removed from the formwork, and the paper is peeled off from the surface of the mortar or concrete filled in the gaps between tiles, stones, etc. After that, the uncured mortar or concrete exposed in the gaps between the tiles, stones, etc. is washed away.