High performance cement-base sealing up leading stoppage material

Abstract

The invention relates to a high-performance cement-based water and leakage stopping material, composed of general Portland cement, high alumina cemen, 0.16-2.5 mm-sized quartz sand, fibrin, water reducer, plaster, and calcined lime powder. It can be mixed into quick-hardening cement, completely efficiently stopping the water and leakage in water- permeable positions of the buildings (structures) such as roofs, walls, floors, dams, tunnels, ponds, etc, thus thoroughly controlling the leakage, and improving living environments by a large margin, prolonging the service life of concrete buildings (structures). It is applied to the constructions (structures) of reinforced concrete, light aggregate concrete, industrial and civil architectures, basements, dams, tunnels, etc.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a high-performance cement-based water-stopping and leak-stopping material. Background technique [0002] At present, due to the failure to fully consider the impermeability of concrete materials and the brittle cracking of concrete structures during design and construction, many large concrete buildings, concrete anti-seepage walls, basements, tunnels, etc. have varying degrees of leakage diseases, which seriously affects the Its usage function. It is very difficult to repair these structures. There are two common approaches: [0003] 1) Use cement mortar mixed with water-reducing agent, waterproofing agent and / or micro-expanding agent to plaster the surface; [0004] 2) Apply polyurethane waterproof coating, silicone rubber waterproof coating or silicone to the wall. [0005] These two methods can improve the leakage resistance of concrete structures to...

AI Technical Summary

Problems solved by technology

[0005] These two methods can improve the leakage resistance of concrete structures to a certain extent. However, leakage often occurs in projects that have been delivered and put into use. At this time, due to the high water pressure, the first method, Because ordinary cement mortar has poor adhesion to the base and has a long setting time, it is often washed away by pressure water before it sets and hardens to build strength; if the latter method is used, on the one hand, these waterproof coatings are solvent-based, Inability to bond to wet walls, on the other hand, such a thin coating is difficult to resist the action of pressurized water

Therefore, these two common methods cannot effectively solve the problem of water-stopping and plugging of leaking concrete structures.