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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Electrode Configurations for Resistivity Measurements on Concrete
Author(s): W. John McCarter, Gerry Starrs, Siva Kandasami, Rod Jones, and Malcolm Chrisp
Publication: Materials Journal
Appears on pages(s): 258-264
Keywords: electrical resistivity; electrodes; frequency; impedance.
Abstract: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.
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