Abstract
Electrical resistivity and salt tracing measurements can be made to help analyze seepage conditions through dams and hydraulic structures. The measurements can be made using an earth resistivity meter in conjunction with an appropriate electrode spacing and ConPiguration. Salt tracing was used with acoustic emission testing (AET) to identify locations where seepage was occurring through a concrete core wall in an earth dam. Locations for salt tracing were chosen based on the AET results. Since the conduction of electrical current in the soil is through the electrolyte contained in the pores, resistivity is governed largely by the porosity and void ratio of the soil, the geometry of the pores, and the salinity of the water within the pore spaces.
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