Silicate cement of precenting chlorate corrosion

Abstract

A silicate cement able to resist against corrosion of Cl salt is proportionally prepared from silicate cement clinker, mixture material, gypsum, assistant and optional short fibers through proportional mixing.

Description

technical field [0001] The invention belongs to the field of Portland cement, in particular to a Portland cement resistant to chlorine salt erosion. Background technique [0002] Reinforced concrete structures have been used for hundreds of years in chloride-salt environments (such as marine environments, deicing salt environments, saline-alkali environments, and environments containing a large amount of chloride ions in water and soil, etc.), but ordinary Portland cement is used to prepare concrete. At the same time, due to the poor resistance to chloride ion erosion of concrete, the steel bars in the structure will corrode quickly, resulting in premature failure of the building. According to the survey, the durable life of reinforced concrete structures made of ordinary Portland cement is usually only about 20 years in the marine environment, which is far from meeting the requirement of 50 years or even longer. [0003] To solve this problem, slag cement was initially use...

AI Technical Summary

Problems solved by technology

[0009] (3) Since the quality of cement and mineral admixtures produced by different manufacturers is different, each specific project must study the compatibility of cement, mineral admixtures and chemical admixtures, and special anti-chlorine The mix design of salt-corrosion concrete, on the one hand, increases the cost, on the other hand, it also causes the technical threshold of chloride-salt corrosion-resistant concrete to be too high, which can only be applied in large-scale projects, and it is difficult to popularize and use it on a large scale