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《CONCRETE》 2000-02
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Conductivity of Pore Fluid and Permeability of Concrete Measured by Electricity

Zhao Tiejun,Zhou Zong hui,Liu Junchang (Department of Civil Engineering,Qingdao Institute of Architecture and Engineering,Qingdao,266033,P.R.China.)〔  
In the AASHTO T277 or ASTM C1202 method,a direct current of 60V is applied on two ends of a concrete specimen the capatance passed through the specimen is measured in six hours,and the grade of chloride permeability of concrete is evaluated.What is actually measured in the method is the concrete conductivity,which depends on both the pore structure and pore fluid chemicals of concrete.As the pore fluid chemicals has little effect on the transport of chloride in concrete,it is not proper to evealuate the chloride permeability of concrete by the capatance. 〔
【Fund】: 国家自然科学基金!(项目号 598780 2 1 )资助项目
【CateGory Index】: TU528
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