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设计4组不同掺量浮石和沸石的高性能混凝土,每组各制作12个试件,其中3个试件用饱和石灰水浸泡2年,3个试件用MgSO4溶液浸泡2年,3个试件用NaCl溶液浸泡2年,然后对它们进行冻融试验,研究高性能混凝土经不同盐溶液侵蚀后质量和抗压强度的变化规律,分析不同矿物掺合料的掺加对高性能混凝土抗盐蚀耐久性的影响。试验结果表明:MgSO4溶液对高性能混凝土的侵蚀破坏能力大于NaCl溶液,掺加浮石和沸石的高性能混凝土抗盐蚀耐久性较强,且沸石掺量越高,抗盐蚀耐久性越强。
Four groups of high-performance concrete with different content of pumice and zeolite were designed. Twelve samples were made in each group. Three samples were immersed in saturated limewater for two years, three samples were immersed in MgSO4 solution for two years and three samples Pieces were soaked in NaCl solution for 2 years, and then they were frozen and thawed to study the variation of mass and compressive strength of high performance concrete after being eroded by different salt solutions. The effects of different mineral admixtures on the salt resistance of high performance concrete Effect of erosion durability. The results show that the erosion damage ability of MgSO4 solution to high performance concrete is greater than that of NaCl solution. The high performance concrete with pumice and zeolite is more resistant to salt corrosion and the higher the dosage of zeolite is, the stronger the corrosion resistance is.