摘   要：采用正交试验方法，研究了干湿循环与硫酸盐侵蚀作用下水胶比、胶粉掺量、硅粉掺量以及消泡剂掺量对混凝土抗硫酸盐侵蚀性的影响。结果表明，各因素影响混凝土抗硫酸盐侵蚀性的主次顺序是水胶比最大，胶粉掺量次之，硅粉掺量和消泡剂掺量最小；随着水胶比的增大以及胶粉和硅粉掺量的减小，混凝土的抗硫酸盐侵蚀性降低；水胶比为0.35，胶粉掺量为8.0%，硅粉掺量为6.0%，消泡剂掺量为0的混凝土抗硫酸盐侵蚀性最强。干湿循环加剧了硫酸盐侵蚀的破坏效应，使混凝土的强度和抗侵蚀性降低。

Abstract: The orthogonal experiment method is adopted to study the influence of water-cement ratio, latex powder, silica fume and defoamer on sulfate erosion resistance of concrete under sulfate erosion and dry-wet cycles. The results show that water-cement ratio has the greatest effect on sulfate erosion resistance, next comes latex powder, followed by silica fume and defoamer. With the increase of water-cement ratio, the decrease of content of latex powder and silica fume, the erosion resistant coefficient decreases. The sulfate erosion resistance of concrete is the strongest while the water-cement ratio is 0.35, the content of latex powder is 8.0%, the content of silica fume is 6.0%, and none of defoamer. The combined action of sulfate and dry-wet cycles can cause a further damage on concrete and lead to a decrease of concrete’s strength and sulfate erosion resistance.