Anticorrosive, antirust, anti-seepage and anti-cracking composite additive special for concrete

Abstract

The invention relates to an anticorrosive, antirust, anti-seepage and anti-cracking composite additive special for concrete. The composite additive is prepared by mixing the following components in percentage by weight: 20-40% of silica powder, 16-24% of high-efficiency water reducing agent, 10-20% of YS chain silicate nanomaterial, 6-10% of triethanolamine, 20-40% of ferrous chloride and 6-10% of latex powder. By using the composite additive, the antirust effect is effectively exerted, the anti-seepage performance, freeze-thaw resistance and other durable performance indexes of the concrete are improved, the reaction of the alkaline aggregate in the concrete is effectively inhibited, and the shrinkage of the concrete is inhibited to a certain extent; and the composite additive can be widely applied in concrete buildings in salty soil, saline lakes and coastal areas, and can also be widely applied in nonferrous metal smelting, chemical industry, petroleum, steel and other industrial buildings in which corrosive substances exist.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a concrete anti-corrosion, rust-proof, seepage-proof and crack-proof composite admixture. Background technique [0002] The durability damage of concrete is seldom caused by corrosion caused by a single factor. Usually, the corrosion of steel bars caused by chloride salts is often accompanied by the erosion and corrosion of sulfate and magnesium salts. The functions of existing concrete admixtures are relatively single. If the requirements of sulfur resistance, rust resistance, impermeability, and crack prevention are to be met at the same time, different types of admixtures need to be added, and different types of admixtures may react with each other, which will eventually affect the quality of concrete. , the expected effect cannot be achieved, resulting in the difficulty in controlling the performance and quality of the finished concrete, and increasing the construction cost of the proj...

AI Technical Summary

Problems solved by technology

The functions of existing concrete admixtures are relatively single. If the requirements of sulfur resistance, rust resistance, impermeability, and crack prevention are to be met at the same time, different types of admixtures need to be added, and different types of admixtures may react with each other, which will eventually affect the quality of concrete. , the expected effect cannot be achieved, resulting in the difficulty of controlling the performance and quality of the finished concrete, and increasing the construction cost of the project