Permeability of Concrete - Comparison of Conductivity and Diffusion Methods.

摘要

The report details research conducted on methods used to rapidly determine the resistance of concrete to the penetration of chloride ions. These methods, based on the electrical conductivity of concrete were Rapid Chloride Permeability (RCP) (AASHTO T277, ASTM C1202), Rapid Migration Test (RMT) (NordTest NTBuild 492), Surface Resistivity (SR) (FM 5-578), and Impressed Current (FM 5-522). The results of these conductivity tests were compared to the Bulk Diffusion (NordTest NTBuild 443) and AASHTO T259 test methods, which allow a more natural penetration of the concrete by the chlorides.