通过试验,系统研究不同强度等级普通混凝土(C40、C50、C60、C80)及掺加粉煤灰混凝土(FC40、FC50、FC60)的抗氯离子渗透性能及抗碳化性能,得到混凝土氯离子扩散系数、快速碳化试验28d碳化深度及抗压强度三者之间的关系;在此基础上,采用Fick定律研究氯离子侵蚀环境下掺加粉煤灰钢筋混凝土结构内钢筋初锈时间,并与普通钢筋混凝土进行对比。 Through experiments, the chloride resistance and carbonation resistance of concrete with different strength grades of ordinary concrete (C40, C50, C60, C80) and fly ash concrete (FC40, FC50, FC60) were systematically studied to obtain the chloride ion diffusion coefficient , Rapid carbonation test 28d carbonization depth and compressive strength of the relationship between the three; On this basis, Fick’s law was used to study chloride ion erosion under the environment with the addition of fly ash reinforced concrete structure initial rust time, and ordinary steel Concrete contrast.