High-permeability concrete sealed waterproofing agent and preparation method thereof

Abstract

The invention discloses a high-permeability concrete sealed waterproofing agent and a preparation method thereof. Most of permeable waterproofing agents on the market presently have the problems of too high surface tension, high viscosity, insufficient permeation depth, bad sealing effect for microcracks in concrete, and unobvious improvement for the waterproofing and anti-permeation performance of concrete. The waterproofing agent disclosed by the invention comprises 500-900 parts of lithium silicate solution, 5-50 parts of modifier, 1-20 parts of retarder, 0-50 parts of reinforcing agent, 5-50 parts of permeating agent and 0-200 parts of deionized water, wherein the lithium silicate solution is a colourless and transparent aqueous solution with a modulus of 4-5 and a solid content of 20-30%; and the permeating agent is one or more of polyether-modified organosilicone and fluorocarbon surfactant. According to the waterproofing agent disclosed by the invention, the lithium silicate solution is modified through the modifier, and the high-efficiency permeating agent and retarder are adopted, thus the surface tension of the waterproofing agent is greatly reduced, and the permeation depth is increased.

Description

technical field [0001] The invention relates to a concrete waterproof material, in particular to a high-permeability concrete sealing and waterproofing agent and a preparation method thereof. Background technique [0002] Concrete is a widely used building material. Concrete is essentially a heterogeneous brittle material with a porous structure and a certain degree of permeability. CO in the surrounding environment 2 Under the action of substances such as , water, chloride ions, sulfates, etc., there will be obvious performance degradation, resulting in frequent leakage of concrete in practical applications. Leakage in buildings will not only damage the interior decoration and equipment of the construction project, affect the appearance and normal use, but also destroy the entire engineering structure in serious cases, threatening the durability and safety of the building, and endangering people's lives and safety . According to relevant information, the problem of house...

AI Technical Summary

Problems solved by technology

However, most penetrating waterproofing agents currently on the market still have the following problems: excessive surface tension, high viscosity, insufficient penetration depth, poor plugging effect on micro-cracks inside concrete, and insignificant improvement of concrete waterproof and impervious properties; The phenomenon of "whitening" often occurs during the process, and a second flushing is required after the construction is completed, which increases the complexity of the process

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