Electrode Configurations for Resistivity Measurements on Concrete

TY - JOUR

T1 - Electrode Configurations for Resistivity Measurements on Concrete

AU - McCarter, W. John

AU - Starrs, Gerry

AU - Kandasami, Siva

AU - Jones, Rod

AU - Chrisp, Malcolm

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

M3 - Article

SN - 0889-325X

VL - 106

SP - 258

EP - 264

JO - Materials Journal

JF - Materials Journal

IS - 3

ER -