DefinePK

Abstract

Electrical conductivity of concrete is of current interest since it can be used as a parameter relating to certain characteristics of concrete. Electrical resistivity is the inverse of electrical conductivity. This literary study indicates that moist concrete behave as a semiconductor with resistivity of the order of 105 ohm-mm while oven-dried concrete behaves as an insulator with resistivity of the order of 1012ohm-mm.The methods of measuring resistivity are studied which draws to the fact that Wenner probe method being the more reliable method. The principle behind the measuring techniques is to quantify the conductive properties of the microstructure or pore network of concrete. This study also presents the factors affecting the resistivity measurements and applications of the measured conductance in determining certain parameters of concrete.