摘要

The influence of cover thickness of the impedance spectra shapes of the steel reinforcement in concrete was investigated. The measurement was conducted in three-electrodes system, in which the working electrode was the steel rod, the rectangle counter electrode was stainless steel and the reference electrode was placed on the surface of concrete samples. The experimental results, in the high frequency range, have clearly shown the dependency of impedance spectra shapes of the cover thickness of steel rod in concrete. The dependency of spectra from steel rod cover thickness was described by three-dimensional space model, based on substituted parallel linked electric circuits, corresponding to the current conducting pass in concrete.

  • 出版日期2014-2