JPS6058337B2 - Waterproofing method for concrete underground structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel waterproofing method for underground concrete structures, which involves applying a colloidal adhesive made of a polymerization agent of rubber and asphalt to the outer peripheral surface of the concrete underground structure, and then Heat melt the Freon asphalt and straight asphalt on the outside surface, return it to a low temperature, add a curing agent, synthetic comb, synthetic resin, tackifier, and anti-aging agent and mix well to bring it to a completely hardened state. A highly foamed polyethylene sheet and a polyethylene film are placed on the front side of the asphalt rubber, and a nonwoven fabric is placed on the back side of the asphalt rubber.
The gist of this method is to glue together waterproof sheets that have been created as two sheets.

In the illustrated embodiment, a synthetic inorganic waterproofing adhesive 2 such as "Oginol A" (trade name) is baked onto the inner wall surface of a concrete underground structure 1, and the connecting part between the inner wall peripheral surface and the bottom surface is bonded. Fill with inorganic waterproof mortar 3,
After applying a colloidal waterproof adhesive 4 made of a rubber and asphalt polymerization agent to the bottom and outer circumferential surface of the structure 1 using a room-temperature construction method, Freon asphalt and straight asphalt are heat-melted on the lower part of the bottom and outer circumferential surface. , return it to a low temperature, add a hardening agent, synthetic rubber, synthetic resin/resin, adhesion agent, and anti-aging agent and mix well to form the core asphalt rubber without completely curing it. A highly foamable polyethylene sheet and a polyethylene film are attached to the front side, and a non-woven fabric is attached to the back side of the waterproof sheet 5, which is made into a single sheet by combining them with the residual heat of melting, and glues them together.
The edges of the sheet 5 are caulked with a sealant 6 made of a polymeric agent of rubber and asphalt, and the remaining waterproof adhesive 4 on the outer circumferential surface of the structure 1 and the waterproof sheet 5 are applied to the structure 1. A waterproof sheet 1 is also bonded to the entire outer circumferential surface of the structure 1 using a waterproof adhesive 4 newly applied to the surface of the part that has been bonded to the outer circumferential surface, and a concrete platform 7 is attached to the lower part of the structure 1. At the same time, waterproof mortar 3 is applied to the entire outer peripheral surface.

As described above, the present invention involves applying a colloidal adhesive made of a polymerization agent of rubber and asphalt to the outer circumferential surface of a concrete structure, and then heat-melting flat asphalt and straight asphalt on the outer surface, returning it to a low temperature, and further hardening. By adding the agent, synthetic rubber, synthetic resin, adhesion agent, and anti-aging agent and mixing them thoroughly, a core asphalt rubber is formed without being completely cured, and a highly foamed polyethylene sheet and polyethylene are added on the front side of the asphalt rubber. The gist of the present invention is to adhere a waterproof sheet made of a film and a sheet of non-woven fabric on the back side of the film, which are all integrated into one sheet by the residual heat of dissolution, and therefore, according to the present invention, a concrete structure can be constructed. Not only can it exhibit a significantly higher waterproofing effect than the known waterproofing method, which merely bakes asphalt on the outer surface of the It has effects such as extremely excellent performance in terms of strength and strength.

[Brief explanation of drawings]

The figure is a schematic cross-sectional view showing an embodiment of the waterproofing method for concrete underground structures of the present invention. 1... Concrete underground structure, 2... Waterproof adhesive, 3... Waterproof mortar, 4... Waterproof adhesive, 5...
・Waterproof sheet, 6. Wool ring, 7. Floor.

Claims (1)

[Claims] 1. After applying a colloidal adhesive made from a polymerization agent of rubber and asphalt to the outer circumferential surface of a concrete underground structure, blown asphalt and straight asphalt are heated and melted on the outer surface, the temperature is returned to a low temperature, and a curing agent, synthetic rubber, By adding a synthetic resin, a tackifier, and an anti-aging agent and mixing them thoroughly, a core asphalt rubber is formed without being completely cured, and a highly foamed polyethylene sheet and a polyethylene film are placed on the front side, and a polyethylene film is placed on the back side. A waterproofing method for concrete underground structures, characterized in that a nonwoven fabric is made into a sheet, and a waterproofing sheet is bonded to the nonwoven fabric, which is made into a single sheet by integrating the nonwoven fabric into one sheet by the residual heat of dissolution.