Electrical resistivity is controled in large part by the amount of fluid filled pore volume in a rock. Rock strength and other geotechnical parameters are also affected by porosity, among other factors. The mutual dependence of these seemingly unrelated properties upon a common controlling factor explains predictable and demonstrable correlations which exist between them. These correlations suggest that resistivity measurements can be used as a qualitative guide in evaluating an area as to its engineering properties. The advantage of using resistivity measurements lies in the fact that they can be made more rapidly and cheaply than direct or other indirect methods of determining engineering rock properties. This fulfills a need for a technique to classify large areas of ground, with respect to their engineering properties, at an early reconnaissance stage in selecting sites for installations that require special strength characteristics in the earth.

  • Supplemental Notes:
    • The Symposium held on April 2-4 1975 at Moscow, Idaho, was jointly sponsored by Idaho Transportation Department University of Idaho, Moscow; Idaho State University Pocatello; and Boise State University.
  • Corporate Authors:

    Idaho Department of Highways

    P.O Box 7129
    Boise, ID  United States  83707
  • Authors:
    • Donaldson, P R
  • Publication Date: 1975-4

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Filing Info

  • Accession Number: 00127658
  • Record Type: Publication
  • Created Date: Mar 10 1976 12:00AM