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本文研究不同矿粉和粉煤灰掺量的胶砂和混凝土在长期浸泡或干湿循环条件下的抗硫酸盐侵蚀性能,以及配制的C50大掺量矿物掺合料混凝土在干湿循环条件下的抗硫酸盐侵蚀性能和试块破坏截面特殊的颜色现象。试验结果表明:单掺矿粉易引起膨胀破坏;复掺粉煤灰后配制的混凝土的抗蚀性能较好;大掺量矿物掺合料的C50混凝土可达到KS90级抗硫酸盐侵蚀性能,且其破坏后截面颜色可在一定程度上反映其受侵蚀情况。
In this paper, the anti-sulfate attack performance of mortar and concrete with different slag and fly ash contents under long-term soaking or wet-dry cycles was studied, and the C50 high content mineral admixture concrete was tested under wet and dry cycle conditions Sulfate corrosion resistance and test blocks destroy cross-sections with special color phenomena. The test results show that the single mixed slag can easily cause the expansion failure; the concrete prepared with the fly ash mixed well has good corrosion resistance; and the C50 concrete with a large amount of mineral admixture can achieve the sulfate resistance of KS90 grade After the destruction of cross-section color to some extent, reflect the erosion of its situation.