JPS6229540Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of joint materials, especially joint materials that are installed on the surface where concrete is to be poured in order to absorb the expansion and contraction caused by changes in the temperature of the poured concrete. The purpose of this is to be able to easily adjust the reference surface height of the joint material according to the thickness of concrete to be placed, such as forming a rainwater flow gradient.

This type of base material is installed on the tarpaulin sheet surface on slab concrete, which is the surface where concrete is planned to be poured, but slab concrete has an uneven surface and the thickness of the holding concrete that is poured on top of the surface is the slope of rainwater flow. The reference surface height of the joint material must be adjusted for each construction site to accommodate this difference.

Conventionally, the height of the reference plane was adjusted using legs that clamped and held the joint material, but the construction was complicated and expensive.

This invention was devised in view of the above, and
Below, we will explain the embodiment of the present invention shown in the drawings. In the drawing, 1 is a soft elastic length made of a foamed synthetic resin that absorbs the expansion and contraction of concrete and has excellent tearability, such as foamed polyethylene, foamed polypropylene, and foamed polyurethane. It is a long plate body and has a vertically elongated rectangular cross section, and 2 is formed on the side surface of the soft elastic long plate body 1 in several stripes running in the longitudinal direction at predetermined intervals. These cuts may be made only on one side as shown in Figure 3, but they may be made at corresponding positions on both sides with equal depth as shown in Figure 2. 3 is a cap slidably fitted on the upper surface of the soft elastic elongated plate body 1, and has an elongated body with a general cross section made of synthetic resin such as hard polyvinyl chloride. It is formed by

The reason why the cap 3 has a roughly shaped cross section is to allow it to be slidably fitted onto the top surface of the soft elastic elongated plate 1. Therefore, it is necessary to provide reference marks and engagement marks on the top surface and side surfaces of the cap 3. There is no problem even if a stopper or the like is formed as appropriate.

As is clear from the above, the present invention forms several longitudinally extending cuts 2 at predetermined intervals on at least one side of the soft elastic elongated plate body 1 whose cross section is a vertically elongated rectangle, and also forms a cross section on the upper surface. Since the cap 3, which is a substantially elongated body, is slidably fitted into the cap 3, when in use, the fourth
As shown in the figure, the lower part of the soft elastic long plate 1 is torn at a predetermined cut 2 according to the thickness of the concrete to be placed, and the planned surface on the waterproof layer b is placed on the slab concrete A. and cap 3
After making fine adjustments by sliding, the holding concrete C is poured.

Therefore, in the present invention, the reference surface height of the joint material can be adjusted by tearing the soft elastic long plate 1 using the cuts 3 without using any jigs or instruments, so it is easier to construct than conventional products. This is a major simplification.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the product, FIG. 2 is a sectional view of the same, FIG. 3 is a sectional view of the same with a different aspect, and FIG. 4 is a diagram showing the same in use. 1... Soft elastic long plate body, 2... Cut, 3... Cap.

Claims (1)

[Claims for Utility Model Registration] (1) A soft elastic elongated plate having a vertically elongated rectangular cross section has several longitudinally extending cuts formed at predetermined intervals on at least one side thereof, and a cross section on the upper surface. A joint material made of a cap made of a roughly shaped elongated body that is slidably fitted into the cap. (2) The joint material according to claim 1, wherein the soft elastic long plate is a foamed long plate made of a synthetic resin such as polyethylene, polypropylene, or polyurethane. (3) The joint material according to claim 1, wherein the cap is a hard elongated body with a roughly shaped cross section made of a synthetic resin such as hard polyvinyl chloride.