effect of water content in the electrical properties of limestone rocks in the frequency domain

ABSTRACT

The effect of water content on the electrical properties of limestone rocks in the frequency domain was studied. Results of studying limestone rock samples with electrical impedance method was considered. Such a study was carried out in the frequency range from 20 Hz to 10 MHz, under some varying relative humidities. The chemical reaction impedance expresses polarization process of the measured sample under controlled environmental conditions. The chemical reaction impedance [Zr] shows a Debye behavior at maximum frequency [105 Hz]. When the sample is nearly dry, it gives a linear behavior in the Z plane. The chemical reaction mechanism based on the obtained data is discussed theoretically and experimentally