混凝土渗透系数与交流电导相关性的试验研究

Water permeability coefficient and alternating current conductivity of concrete

在高性能混凝土的渗透性和耐久性研究中,利用电化学理论对其进行快速评定是目前较常用的一种方法,而传统的透水试验方法则难以实施.用交流电导法和透水法测定了水泥砂浆试块的渗透性并研究了这两种试验方法所得结果的相关性.结果表明,经试块粉末浸液化学成分修正后的交流电导值与渗透系数有较好的相关性;用交流电测量普通混凝土的电导并以此反映混凝土的渗透性是可行的.

In the study of the permeability and durability of high performance concrete, a normal technique has been found to determine the permeability of concrete through electrochemical theory rapidly since the traditional pervious test is difficult to carry on. Permeability of ordinary concrete is determined by pervious test and electricity method in this paper, and the relativity of the results of the two methods is researched. The results show that there is an ideal correlation between the water permeability coefficient and the conduction of the concrete modified by the pore chemicals. It is feasible to determine permeability of ordinary concrete by measuring electric conduction of the concrete by alternating current.