引用本文摘 要：采用正交試驗方法，研究了干濕循環與硫酸鹽侵蝕作用下水膠比、膠粉摻量、硅粉摻量以及消泡劑摻量對混凝土抗硫酸鹽侵蝕性的影響。結果表明，各因素影響混凝土抗硫酸鹽侵蝕性的主次順序是水膠比最大，膠粉摻量次之，硅粉摻量和消泡劑摻量最??；隨著水膠比的增大以及膠粉和硅粉摻量的減小，混凝土的抗硫酸鹽侵蝕性降低；水膠比為0.35，膠粉摻量為8.0%，硅粉摻量為6.0%，消泡劑摻量為0的混凝土抗硫酸鹽侵蝕性最強。干濕循環加劇了硫酸鹽侵蝕的破壞效應，使混凝土的強度和抗侵蝕性降低。 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.