Concrete waterproof agent

Abstract

A concrete waterproof agent is prepared from the following raw materials in parts by weight: 15-20 parts of calcium lignosulfonate powder, 7-9 parts of alunite, 5-8 parts of fatty alcohol polyoxyethylene ether, 4-8 parts of nanometer silicon dioxide, 9-16 parts of sodium fluosilicate, 5-8 parts of sodium alkylbenzene sulfonate , 5-10 parts of sericite powder, 4-10 parts of sodium polyacrylate, 20-30 parts of sodium methyl silicate, 5-12 parts of chrome oxide, 7-12 parts of molasses, 10-18 parts of sulfur trioxide, 8-19 parts of calcium phosphate, 21-27 parts of tetraethyl orthosilicate, 10-14 parts of phenyl salicylate, 10-18 parts of calcium hydroxide and 3-7 parts of 1H,1H,2H,2H-perfluorooctyltriethoxysilane. The provided concrete waterproof agent is superior in waterproof performance, strong in permeability and strong in frost resisting.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a concrete waterproofing agent. Background technique [0002] After ordinary concrete is hardened under general curing conditions, there will always be a certain degree of water seepage or leakage. It is very important to improve the waterproof and impermeable performance of concrete. There are two ways for concrete to produce water seepage: one is that when there is hydrostatic pressure on the two sides of the concrete, water can pass through some cracks or pores; the other is that due to capillary action, water is absorbed until there is unsaturated water. Steam evaporates off the surface. Concrete waterproofing agent is to reduce the above two effects in different ways, so as to improve the waterproof and anti-seepage ability. At present, there are many kinds of waterproofing agents, among which the main components of inorganic waterproofing agents are chloride sal...

AI Technical Summary

Problems solved by technology

Concrete waterproofing agent is to reduce the above two effects in different ways, so as to improve the waterproof and anti-seepage ability. At present, there are many kinds of waterproofing agents, among which the main components of inorganic waterproofing agents are chloride salt, lithium chloride salt, sulfate, water glass, Zirconium compounds, mineral powder, etc.; the main components of organic waterproofing agents are fatty acid metal salts, synthetic resins, water-soluble resins, various emulsions, etc. In recent years, an expansion agent has also been developed as the main agent, compounded with other external Intumescent waterproofing agent, but improper use will cause concrete cracking, due to the shortcomings of existing waterproofing agents in different degrees, it can not meet the waterproof and anti-seepage needs of construction projects