Waterproof structure at corner part of internal and external corner

Abstract

The invention provides a waterproof structure at a corner part of an internal and external corner, and has the advantages that the structure is simple; the tearing cannot easily occur at the corner part of the internal and external corner; the requirement on a base layer is low; and the integrality is high. The waterproof structure at the corner part of the internal and external corner is characterized by comprising a first polyethylene foam layer, a first SBS (styrene butadiene styrene) modified asphalt layer, a reticular reinforcing layer, a second SBS modified asphalt layer and a second polyethylene foam layer, wherein the reticular reinforcing layer is pressed and mounted between the first SBS modified asphalt layer and the second SBS modified asphalt layer; and the polyethylene foam layer and the second polyethylene foam layer are respectively bonded at the inner side of the first SBS modified asphalt layer and the outer side of the second SBS modified asphalt layer.

Description

technical field [0001] The invention relates to the waterproof construction of low-level construction projects, in particular to a waterproof structure at the corners of Yin and Yang corners. Background technique [0002] In the construction of SBS waterproof membrane, the waterproof form of 3+3 (3 mm thick + 3 mm thick) is the most common. According to the technical specification for underground engineering waterproofing GB50108-2008: the corners of the yin and yang corners should be made into arcs or 45° slope angles, Its size should be determined according to the type of coil. [0003] Reference attached figure 1 , In special parts such as the corners of yin and yang, a coil reinforcement layer with a width of 300-500mm should be added. In the prior art, the number of SBS waterproof layers at the yin and yang corners is 4 layers, including two layers of thick waterproof membrane 2 and the inner reinforcement layer 1 and the outer reinforcement layer 3 on the inner and o...

AI Technical Summary

Problems solved by technology

In the prior art, the number of SBS waterproof layers at the yin and yang corners is 4 layers, including two layers of thick waterproof membrane 2 and the inner reinforcement layer 1 and the outer reinforcement layer 3 on the inner and outer sides of the waterproof membrane 2, which makes the structure of this part more complicated.

In addition, this is the corner of the yin and yang, and the force is more complicated. Therefore, this part is a part with a high incidence of water leakage

The following problems exist in the construction: 1. The structure of this part is complex, and the construction quality cannot be guaranteed; 2. The force on this part is relatively concentrated, and it is easy to be broken; 3. The requirements for the base layer are high; 4. It consumes more labor

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