1.School of Highway, Chang，an University, Xi，an 710061, China 2.School of Materials Science and Engineering, Chang，an University, Xi，an 710061, China
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DOI:
10.7502/j.issn.1674-3962.2014.11.06
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Abstract:
Sulfate attack is one of the hot topics in the study of concrete durability. The incorporation of mineral admixtures change inside composition of concrete and refine pore structure of concrete, which plays an important role on the concrete resistance to sulfate attack. Admixture of chemical composition, fineness, dosage, etc have great influence on concrete resistance to sulfate attack. When external corrosion environment is different, the effect of resistance to sulfate attack also has significant difference for mineral admixture concrete. Abundant studies manifest that mineral admixtures can significantly improve the ability of resistance to sulfate attack of concrete as long as the content is appropriate in continuous immersion of sulfate solution. In dry-wet circulation and sulfate solution, it is controversial that mineral admixtures of concrete resists to sulfate attack. Some studies have shown that mineral admixtures can improve the ability of resistance to sulfate attack of concrete. some studies, however, hold the opposite conclusion, which need further study.