Nondestructive Determination of Pavement Thickness Using Electrical Resistivity Techniques.

摘要

Electrical resistivity techniques were used in nondestructive thickness tests on both cured and fresh concrete. An electrically isotropic,homogeneous,purely resistive layer of thickness, h was assumed to be in perfect contact with a base layer of infinite extent. Equations applicable to this mathematical model were developed assuming a Wenner electrode configuration with both finite and infinite length electrodes. Line electrodes were used to average out the anisotropic and unhomogeneous effects that exist on a point basis. This mathematical model was found to be approximately correct for fresh concrete but inadequate for cured concrete pavements. (Author)