An alternating test method for concrete permeability

ASTM C1202 is now the most common concrete permeability testing method used world wide, and also the method receiving most of the criticisms and doubts. Concrete resistance is measured with alternating current, and the conductance calculated to reflect its permeability. With various concretes, experiments show that the conductance of the alternating current method and the charge of ASTM C1202 correlate well, with the coefficient of 0.9867. Accordingly, the specification of concrete permeability measured by alternating current is set up.