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研究了普通硅酸盐水泥、矿渣硅酸盐水泥和抗硫酸盐水泥等水泥混凝土浸泡在pH值为2的模拟酸雨中的外观、相对表面弹性模量和相对动弹性模量变化。结果表明:采用抗硫酸盐水泥或矿渣硅酸盐水泥可改善水泥基材料抗酸雨侵蚀性能,但作用有限;几种水泥的抗酸侵蚀能力由高到低依次为:SRC>SPC>OPC。X射线衍射(X-ray diffraction,XRD)分析表明:酸雨对水泥混凝土的侵蚀破坏主要是由酸雨中H+和SO42-共同侵蚀作用的结果。
The appearance, relative surface elastic modulus and relative dynamic elastic modulus of soaked concrete with ordinary portland cement, slag Portland cement and anti-sulfate cement in simulated acid rain at pH 2 were studied. The results show that the anti-acid rain erosion performance of cement-based materials can be improved by anti-sulfate cement or slag Portland cement, but the effect is limited; the acid-erosion resistance of several kinds of cement is SRC> SPC> OPC. X-ray diffraction (XRD) analysis shows that the erosion damage of cement concrete by acid rain is mainly caused by the common erosion of H + and SO42- in acid rain.