JP2545174B2 - Surface plate pre-attachment method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for pre-applying a surface plate such as a tile or a stone plate to a precast concrete slab.

[0002]

2. Description of the Related Art As a method of attaching tiles to a precast concrete slab in advance, a large number of tiles are laid in a formwork with a joint bar such as rubber interposed between them, and concrete is placed on the tiles. The method of placing is common. By this way, according to this method, the back surface of the tile and the concrete are adhered to each other over the entire surface, and there is a risk that a peeling phenomenon may occur due to the difference in expansion and contraction due to temperature change between the tile and the concrete, and the joint bar is also required to be released from the mold. This invention was developed in view of the above circumstances.

[0003]

According to the pre-applying method of the present invention, a surface plate is laid on a bottom plate of a mold at predetermined joint intervals, and an insulating sheet having a through hole is cut out on the surface sheet. Position the central part of the back surface of the face plate, and bond the insulating sheet so as to cover the joints, and place concrete on it to bond the central part of the surface plate with the concrete, but the peripheral part with the concrete. This is a method of insulating the adhesive.

[0004]

[Example] A surface plate 1 such as a tile or a stone plate is laid on a bottom plate of a form A with a predetermined joint interval (W), and is placed thereon.
An insulating sheet 2 such as a paper sheet, a plastic sheet or a rubber sheet, which is cut out at a portion corresponding to the central portion B into a through hole 4 having a rectangular shape or other circular shape as shown in FIG. The insulating sheet 2 straddles the joint space of the surface plate 1 and adheres to each surface plate 1 so as to cover the joints to secure a predetermined joint space (W). Concrete 3 is cast on it, and after the concrete 3 is hardened, it is removed from the mold.

The concrete 3 adheres well to the central portion B of the surface plate 1, but hardly adheres to the insulating sheet 2 in the peripheral portion of the surface plate 1.

[0006]

The operation and effect of the present invention has the above-mentioned structure.
Since the surface plate and concrete adhere to each other in the central part and the peripheral part hardly adheres due to the interposition of the insulating sheet, the difference in expansion and contraction due to temperature change of the concrete and the surface plate is absorbed by the insulating part, and both Does not peel off. Since the bonding area can be appropriately selected according to the sizes of the concrete slab and the surface plate, it is possible to easily cope with precast concrete slabs of various sizes. Further, since the insulating sheet covers the joint gap, concrete is not clogged within the joint gap, and an appropriate joint material can be filled if necessary after demolding.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a manufacturing process.

FIG. 2 is a plan view showing a state in which surface plates are laid side by side and an insulating sheet is bonded.

[Explanation of symbols]

A ... Formwork, B ... Center part, 1 ... Surface plate, 2 ... Insulation sheet,
3 ... Concrete, 4 ... Through hole.

Claims (1)

(57) [Claims] 1. An insulating sheet in which a front plate is laid on a bottom plate of a mold at predetermined joint intervals, and a through hole is cut out on the front plate, and the through hole is located at the center of the back surface of the front plate, and A method for pre-applying a surface plate, characterized in that an insulating sheet is bonded so as to cover the joints, and concrete is placed on the joint.