采用ASTM C1202及RCM氯离子扩散系数方法,对不同矿物掺合料混凝土和普通混凝土进行抗氯离子渗透性能的研究,并探讨了电通量与初始电流、氯离子扩散系数与初始电流及电通量与氯离子扩散系数之间的相关性。结果表明:掺入矿物掺合料能有效降低混凝土的抗氯离子渗透性能,在一定龄期范围内,电通量与初始电流、氯离子扩散系数与初始电流及电通量与氯离子扩散系数之间均表现出较好的相关性。
An experimental study is performed on the impermeability of concrete against chloride ions.Including the portland cement concrete,and the concrete mixed with different mineral admixtures,by use of the ASTM C1202 method,the chloride diffusion coefficient test method called RCM.The correlations between electric flux,Initial current,chloride diffusion coefficient,initial current,Charge and chloride diffusion coefficient were discussed.Tests indicate that,the introduction of mineral admixture can effectively reduce the ability to resist chloride ion penetration into concrete.In a certain age range,it is also showed that initial current,Charge and chloride diffusion coefficient have good correlations between Charge and initial current chloride.