Concrete for construction in underground contaminated environment

Abstract

The invention belongs to the technical field of construction materials, and provides concrete for construction in an underground contaminated environment in order to solve the problems that the existing concrete has a poor effect in resisting corrosion, cracking and water simultaneously, and cannot resist the geology in the contaminated environment effectively, and consequently, the concrete and steel bars are corroded, resulting in poor durability of reinforced concrete. The concrete for construction in the underground contaminated environment is prepared by mixing common portland cement, silicon dioxide, calcium carbonate, calcium oxide, aluminum oxide, iron oxide, magnesium oxide, sulfuric anhydride, a polycarboxylate high performance water reducing agent, water, anhydrous calcium sulphoaluminate and anhydrous calcium sulfate according to a certain proportion. The cement has high quality, and is improved in impermeability grade and lowered in cracking area and corrosion rate by addition of the anhydrous calcium sulphoaluminate and the anhydrous calcium sulfate, thereby improving the water-proof, anti-crack and anti-corrosion performance; the concrete can resist the damage of various gaseous, liquid-state and solid-state corrosive mediums in the underground contaminated environment.

Description

technical field [0001] The invention belongs to the technical field of building construction materials, and in particular relates to concrete for construction in an underground polluted environment. Background technique [0002] Concrete is one of the most important contemporary civil engineering materials. Concrete has the characteristics of abundant raw materials, low price and simple production process, so its usage is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. However, the concrete currently produced in the construction market has poor anti-corrosion, anti-crack, and waterproof performance, and cannot produce effective resistance to geology in polluted environments. Gas, liquid, and solid various corrosive media, according to its performance and Different concentrations will cause corrosion to concrete and steel bars, affecting the durability of reinforced concre...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the poor effect of the existing concrete anti-corrosion, anti-cracking and waterproof performance, the present invention cannot produce effective resistance against the geology in the polluted environment, various corrosive media such as gas, liquid and solid, according to their performance and concentration Different, it will cause corrosion to concrete and steel bars, and affect the durability of reinforced concrete. A concrete for underground polluted environment construction is provided to better improve the anti-corrosion, crack resistance and waterproof effects of underground building construction concrete.

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