为了研究水灰比、砂率和矿物掺合料对混凝土抗硫酸盐侵蚀的影响,对一系列混凝土试块进行了干湿循环后的轴压试验,分析了不同次数干湿循环下试块抗压强度和质量变化规律。结果表明:砂率对硫酸盐环境下混凝土质量变化及抗压强度影响很小;水灰比越小,抗硫酸盐侵蚀能力越强;掺加矿物掺合料能明显改善混凝土的抗硫酸盐侵蚀性能。 In order to study the effect of water-cement ratio, sand rate and mineral admixtures on the sulfate resistance of concrete, a series of concrete specimens were subjected to axial compression tests after wet-dry cycles. Pressure intensity and quality changes. The results show that the sand rate has little effect on the change of concrete quality and compressive strength under the condition of sulphate, the smaller the ratio of water to cement is, the stronger the capability of anti-sulphate attack is. The incorporation of mineral admixture can obviously improve the sulfate resistance of concrete performance.