Electrode configurations for resistivity measurements on concrete

William John McCarter, Gerard Starrs, S Kandasami, M. R. Jones, Malcolm Chrisp

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    44 Citations (Scopus)


    In this study, two- and four-electrode arrangements were used to evaluate the electrical resistance (hence resistivity) of saturated concrete specimens using both embedded rod-electrodes, external plate-electrodes, and combinations thereof. Measurements were obtained mainly at a fixed frequency of 1 kHz. It is shown that the two-electrode external plate measurement system gave higher resistivity values than the four-electrode system; however, studying the electrical response in terms of complex impedance, over the frequency range 1 to 10 MHz, revealed that the sponge-contacting system used in the two-electrode method introduced a spurious resistance attributed to the sponge-sample interface.
    Original languageEnglish
    Pages (from-to)258-264
    Number of pages7
    JournalACI Materials Journal
    Issue number3
    Publication statusPublished - 2009


    • electrical resistivity
    • electrodes
    • frequency
    • impedance


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