粉煤灰和矿粉对PERMIT和RCM法检测混凝土氯离子扩散系数的影响研究

Research on Influence of Coal Ash and Mineral Powder on Diffusion Coefficient of Concrete Chloride Ion Detected by PERMIT and RCM Method

对采用粉煤灰和矿粉作为胶凝材料等量替代水泥的方法制备的混凝土性能进行了研究,包括混凝土的力学性能和抗氯离子渗透性能,通过PERMIT和RCM两种方法测定混凝土氯离子渗透系数。试验结果表明,通过PERMIT和RCM两种方法测定混凝土抗氯离子渗透系数,两种方法的试验结果有良好的相关性,建立了采用PERMIT法测得的氯离子扩散系数DPERMIT与采用RCM法测得的氯离子扩散系数DRCM之间的关系表达式。

The research on the concrete performance that adopts the method of using coal ash and mineral powder as the binding material to replace cement equivalently is made,including mechanical property of concrete and penetrability of chloride ion penetration resistance through the diffusion coefficient of concrete chloride ion detected by two methods of PERMIT and RCM.The test results show that,the test results of two kinds of methods have good correlation,and the relational expression between the diffusion coefficient of chloride ion DPERMIT detected by PERMIT method and that DRCM detected by RCM method is established.