矿物掺合料的掺入对混凝土抗氯离子渗透性能影响的评价与研究  

Research and evaluation on influence of the resistance to penetration of chloride ions into concrete mixed mineral admixtures

作　　者：孟振亚[1] 刘加平[1,2] 刘建忠[2] 郭飞[2] 陆加越[1] 张守治[1] 

机构地区：[1]南京工业大学,江苏南京210009 [2]江苏省建筑科学研究院,江苏南京210008

出　　处：《混凝土》2010年第7期28-30,33,共4页Concrete

基　　金：西部交通建设科技项目(2006ZB12)

摘　　要：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.

关 键 词：矿物掺合料 电通量 氯离子扩散系数 初始电流 相关性 

分 类 号：TU528.01[建筑科学—建筑技术科学]