JPH0349210Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a waterproof sheet construction structure formed by lap-connecting the edges of a plurality of waterproof sheets with heat insulating layers.

[Prior Art] In a waterproof sheet construction structure, it is important that the waterproof sheet is completely adhered to the construction surface and that the waterproof sheet does not bulge after construction.

As this type of tarpaulin, two types are often used: one consisting only of a tarpaulin layer, and a tarpaulin sheet with a heat insulating layer, which has a thick heat insulating layer on the construction side.

Now, since the tarpaulin sheet is produced in a factory, it is short both in length and width. In contrast, the buildings, artificial ponds, waste storage facilities, etc. to be constructed are vast. For this reason, when constructing a waterproof sheet, a plurality of sheets are used and their edges are lap-connected.

Although the work of lap-joining a tarpaulin consisting of only a tarpaulin layer is relatively simple, the work of lap-joining a tarpaulin with a heat-insulating layer is problematic because of the thick heat-insulating layer.

The first problem is that the appearance deteriorates due to the convex construction surface. That is, if a waterproof sheet with a heat insulating layer is lap-connected as is, the construction surface will be convex due to the thick heat insulating layer. This problem can be solved by removing the insulation layer at the edge in advance, leaving only the tarpaulin layer protruding, and then connecting the protruding tarpaulin layer by lap to the edge of another adjacent tarpaulin layer with insulation layer. The problem can be solved by

However, the second problem, the problem of swelling around the lap joint, could not be solved. In other words, the evaporated water from the concrete base and the organic solvent of the adhesive applied to the concrete base are absorbed by the thick heat insulating layer, and the absorbed water and organic solvent cause blistering defects after the waterproof sheet with the heat insulating layer is installed.

[Problem to be solved by the invention] The present invention has been made based on the above points, and its purpose is to solve the above-mentioned drawbacks of the prior art and to provide a lap connection part of a waterproof sheet with a heat insulating layer. An object of the present invention is to provide a new waterproof sheet construction structure that can completely eliminate blistering defects in the surrounding area.

[Means for Solving the Problems] The gist of the present invention is that a plurality of waterproof sheets with a heat insulating layer, which are formed by laminating a heat insulating layer on the bottom side of the waterproof sheet layer, are installed with the heat insulating layer side as the bottom side. In a waterproof sheet construction structure that is constructed on the body using an adhesive and in which the edges of multiple waterproof sheets with heat insulating layers are lap-connected, the lap joint is made into a special structure. There is a particular thing.

That is, the gist of the present invention is to remove the heat insulating layer at the edge of the waterproof sheet with a heat insulating layer on one side to be lap-connected, leaving only the waterproof sheet layer to protrude in the longitudinal direction, and to prevent that protrusion. A deaeration sheet with a plurality of protrusions fixed to the bottom side of the waterproof sheet layer and in close contact with the removed side of the heat insulating layer is installed, and a plurality of protrusions are attached to the bottom side of the deaeration sheet. A plurality of deaeration grooves are formed by the protrusion and the construction body, and each of the deaeration grooves is provided with a deaeration port that communicates with the outside air, and a connection is provided on the side of the deaeration sheet. The edges of the waterproof sheet with a heat insulating layer on the other side are installed closely together, and the waterproof sheet with a heat insulating layer on one side is installed with an adhesive on the upper edge of the waterproof sheet with a heat insulating layer on the other side. The waterproof sheet layer protruding from the edge of the sheet is lap-connected.

In the present invention, the waterproof sheet layer of the waterproof sheet with a heat insulating layer may be a rubber sheet or a plastic sheet. Examples of rubber sheets include ethylene propylene rubber sheets, chloroprene rubber sheets, and styrene-butadiene rubber sheets.

Further, in the present invention, the heat insulating layer of the waterproof sheet with a heat insulating layer includes a foamed polyethylene sheet layer, a foamed polypropylene sheet layer, etc.

In the present invention, the construction material is concrete or the like. An adhesive that can bond the insulation layer side of the waterproof sheet with insulation layer is applied to this concrete surface. As the adhesive, chloroprene rubber adhesive, acrylic emulsion adhesive, etc. are used.

Further, in the present invention, an adhesive tape such as unvulcanized gummed tape can be used as the adhesive for the lap connection portion of the waterproof sheet with a heat insulating layer.

[Function] The waterproof sheet construction structure of the present invention exhibits the following functions and effects.

a) A plurality of waterproof sheets with a heat insulating layer, each consisting of a heat insulating layer laminated on the bottom side of the waterproof sheet layer, are applied onto the construction body with an adhesive, with the heat insulating layer side facing down, and the plurality of waterproof sheets are In a tarpaulin construction structure in which the edges of waterproof sheets with a heat-insulating layer are lap-connected, the heat-insulating layer on the edge of the waterproof sheet with a heat-insulating layer on one side of the lap-connected side is removed and only the waterproof sheet layer is replaced. By installing a degassing sheet that protrudes in the longitudinal direction and has a plurality of protrusions fixed to the underside of the protruded waterproof sheet layer and in close contact with the side surface of the heat insulating layer to be removed, degassing can be achieved. By forming a deaeration groove with the air sheet, a plurality of protrusions, and the construction body, and communicating the deaeration groove with the outside air, the waterproof sheet layer, heat insulation layer, Moisture, organic solvents, etc. remaining in the construction material, etc. are completely released into the atmosphere through the deaeration groove and deaeration port to completely prevent blistering defects in the waterproof sheet layer around the lap joints, b. The edge of the waterproof sheet with a heat insulating layer on the other side to be connected is installed closely on the side of the degassing sheet, and one side is attached via adhesive to the upper edge of the waterproof sheet with a heat insulating layer on the other side. By lap-connecting the protruding edges of the waterproof sheet with a heat insulating layer on one side, the waterproof sheet with a heat insulating layer on the other side can be connected by simply bringing the edges of the waterproof sheet close together without much processing. Moreover, after connection, moisture, organic solvents, etc. remaining on the waterproof sheet with a heat-insulating layer on the other side are completely released into the atmosphere through the deaeration groove and vent at the edge of the waterproof sheet with a heat-insulating layer on one side. Furthermore, since the tarpaulin sheet with the insulation layer on the other side is hardly processed, a smooth surface can be maintained, and as a result, the tarpaulin sheet layer with the protruding edge of the waterproof sheet with the insulation layer on the one side can be placed on top of it. Waterproofing using a waterproof sheet with a heat insulating layer that can completely prevent unevenness at the lap connection even when lap connections are made, and these components work synergistically to provide excellent appearance and degassing properties. The objective is to obtain a sheet construction structure.

[Example] Next, an example of the waterproof sheet construction structure of the present invention will be described with reference to the drawings.

FIG. 2 is a perspective explanatory view showing one embodiment of the waterproof sheet construction structure of the present invention.

Further, FIG. 1 is a cross-sectional view of a waterproof sheet with a heat-insulating layer treated at one end side, which is used in an embodiment of the waterproof sheet construction structure of the present invention shown in FIG.

In Figures 1 and 2, 1 and 3 are waterproof sheet layers, 2 and 4 are heat insulation layers, 5 is a construction body, 6 is an adhesive applied to the construction body 5, 7 is a lap connection part, 2
0 has a plurality of protrusions 21 at predetermined intervals on the bottom surface.
A deaeration sheet 22 is provided with a deaeration groove.

As shown in FIG. 1, the waterproof sheet with a heat insulating layer on one side to be connected used in an embodiment of the waterproof sheet constructed structure of the present invention is a waterproof sheet with a heat insulating layer with a processed edge on one end.

This waterproof sheet with a heat-insulating layer processed at one end edge is produced by removing the heat-insulating layer 2 at the edge of the waterproof sheet with a heat-insulating layer over an appropriate length to make the waterproof sheet layer 1 protrude, and then forming the waterproof sheet with the protruding edge. A deaeration sheet 20 is provided on the underside of the layer 1 and in close contact with the removed side surface of the heat insulating layer 2, and is provided with a plurality of protrusions 21 at predetermined intervals on the underside.

Further, the waterproof sheet with a heat insulating layer on the other side to be connected used in an embodiment of the waterproof sheet construction structure of the present invention is processed so that the tip of the waterproof sheet layer 3 has a gentle slope. Other than that, no processing has been done at all. Of course, the waterproof sheet with a heat insulating layer on the other side can also be directly connected without performing any processing on the tip end of the waterproof sheet layer 3.

In the waterproof sheet construction structure of the present invention, it is possible to use a waterproof sheet with a heat insulating layer processed at one end edge as shown in Fig. 1, or a waterproof sheet with a heat insulating layer on the edge of the waterproof sheet with a heat insulating layer can be used during construction. The waterproof sheet layer 1 is made to protrude by removing the waterproof sheet layer 1 over an appropriate length, and a plurality of protrusions 21 are provided on the lower surface at predetermined intervals on the inside part of the protruding waterproof sheet layer 1 in the longitudinal direction. It may be constructed so that the air sheet 20 is fitted.

In the present invention, the deaeration groove 22 is formed by three members: the construction body 5, the deaeration sheet 20, and the protrusion 21. Although not shown, in FIG. 2, the deaeration groove 22 is connected to a deaeration port communicating with the atmosphere. Therefore, in the waterproof sheet construction structure of the present invention,
Moisture, organic solvents, etc. remaining in the waterproof sheet layer 1, heat insulating layer 2, construction material 5, etc. around the lap joint can be completely released into the atmosphere through the deaeration groove 22 and deaeration port (not shown). As a result, it is possible to completely prevent blistering defects in the waterproof sheet layer 1 around the lap connection portion.

In addition, the waterproof sheet with a heat insulating layer on the other side to be connected used in an embodiment of the waterproof sheet constructed structure of the present invention has a smooth surface because it has hardly been processed, and as a result, the heat insulating layer on the one side is placed on top of it. Even when the protruding waterproof sheet layer 1 of the attached waterproof sheet is lap-connected, no unevenness occurs.

[Effects of the invention] The waterproof sheet construction structure of the present invention removes moisture, organic solvents, etc. remaining in the waterproof sheet layer, heat insulation layer, construction precursor, etc. around the lap joints into the atmosphere through the deaeration groove and deaeration port. can be completely released to
As a result, it is possible to completely prevent the blistering of the waterproof sheet layer around the lap joint, which is industrially useful.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a waterproof sheet with a heat insulating layer treated at one end edge used in an embodiment of the waterproof sheet construction structure of the present invention, and Figure 2 is an embodiment of the waterproof sheet construction structure of the present invention. It is a perspective explanatory view showing an example. 1, 3... Waterproof sheet layer, 2, 4... Heat insulation layer,
5... Construction body, 6... Adhesive, 7... Wrap connection part, 20... Deaeration sheet, 21... Projection, 2
2... Deaeration groove.

Claims (1)

[Scope of utility model registration request] A plurality of waterproof sheets with a heat insulating layer, which are formed by laminating a heat insulating layer on the lower surface side of the waterproof sheet layer, are applied onto the construction body with an adhesive, with the heat insulating layer side being the lower surface side, and the plurality of waterproof sheets are constructed using an adhesive. In a waterproof sheet constructed structure in which edge portions of a waterproof sheet with a heat insulating layer are lap-connected, the heat insulating layer is removed from the edge portion of the waterproof sheet with a heat insulating layer on one side of the waterproof sheet constructed structure. Only the waterproof sheet layer is protruded in the longitudinal direction, and a plurality of protrusions are fixed to the lower surface side of the longitudinally protruded waterproof sheet layer and in close contact with the removed side surface of the heat insulating layer. A deaeration sheet made of is provided with a deaeration port that communicates with outside air, and furthermore, the edge of the waterproof sheet with a heat insulating layer on the other side of the waterproof sheet construction structure is installed in close contact with the side surface of the deaeration sheet. and the waterproof sheet layer protruding from the edge of the waterproof sheet with a heat insulating layer on one side is lap-connected to the upper edge of the waterproof sheet with a heat insulating layer on the other side via an adhesive. Features waterproof sheet construction structures.