2.8抗硫酸盐侵蚀测试目前北美抗硫酸盐侵蚀标准包括限制水胶比、最低强度以及水泥的组成和膨胀率。从20世纪20年代,甚至在化学反应未被理解之前,人们就认识到低W/C和低浓度结合水含量的混凝土混合物对于抵抗硫酸侵蚀具有重要的作用。此后不久,人们意识到了C3A水泥的不足之处,在20世纪30年代 2.8 Sulphate corrosion resistance test The current North American sulphate erosion resistance standards include a limit on the water-cement ratio, the minimum strength, and the composition and rate of expansion of the cement. From the 1920s, it was recognized that low-W / C and low concentrations of water-bound concrete mixes play an important role in resisting sulfuric acid attack even before chemical reactions are not understood. Shortly thereafter, people were aware of the shortcomings of C3A cement in the 1930s