基于交流电原理的混凝土抗氯离子渗透性测试方法

A Testing Method for Chloride Resistance of Concrete Based on Alternating Current Mechanism

为配合中国建筑学会《混凝土抗氯离子渗透性的交流电测量方法》评价标准的建立,采用了交流电测法、电通量法(ASTM C1202)和快速氯离子扩散系数法(RCM)三种试验方法,定量评价了普通、高强和高性能混凝土抗Cl-渗透的能力。结果表明,当水灰比、粉煤灰及矿渣粉掺量变化时,交流电测法在多数情况下具有较好的适应性;交流电测法与ASTM C1202法、RCM法具有良好的相关性,相关系数分别为0.940 86、0.770 89。

In order to cooperate with the establishment of the evaluation standard of Activities for the measurement of chloride ion permeability of concrete by Architectural Chinese Society of China, alternating current method, electric flux method(ASTM C1202) and rapid chloride ion diffusion coefficient method(RCM) were used to quantitatively evaluate the resistance of ordinary, high-strength and high-performance concrete to chloride ion penetration. The results show that when the water-cement ratio, the content of fly ash and slag powder change, the alternating current method has better adaptability in most cases. The alternating current method has good correlation with ASTM C1202 method and RCM method, and the correlation coefficient is 0.940 86 and 0.770 89 respectively.