You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 26, Issue 2 (June 2003)

    Evaluation of Multi-Electrode Earth Resistivity Testing in Karst

    (Received 21 May 2001; accepted 9 May 2002)

    Published Online: 01 June 2003


      Format Pages Price  
    PDF (1.3M) 12 $25   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Multi-electrode resistivity testing is quickly becoming a common tool for geotechnical site investigation in karst areas, particularly areas with clay soils. To study the effectiveness of this method, data from over 140 resistivity tests at two sites were collected and compared with the results from 51 borings. The tests were conducted to evaluate the effect of electrode arrangement and the presence of conductive utilities, to determine the repeatability of the results, and to evaluate the effectiveness of the method in determining depth to bedrock and the location and size of voids. The results demonstrated that multi-electrode resistivity can reliably map depth to bedrock with excellent repeatability, although there was some smoothing in areas where the true bedrock surface is highly irregular. Underground utilities presented the most serious problem when oriented parallel to the resistivity electrode spread. The multi-electrode resistivity method was not as effective at locating voids. The strongest indication was provided by comparison of the resistivity data from lines collected perpendicular and parallel to the geologic strike because the results tended to be very different when collected over a cavity. Recommendations for using resistivity testing as a site investigation tool are given.

    Author Information:

    Roth, MJS
    Associate professor, Lafayette College, Easton, PA

    Nyquist, JE
    Associate professor, Temple University, Philadelphia, PA

    Stock #: GTJ11322J


    DOI: 10.1520/GTJ11322J

    Title Evaluation of Multi-Electrode Earth Resistivity Testing in Karst
    Symposium ,
    Committee D18