A study of the frequency domain induced polarisation effects displayed by clay and by cation exchange resin, model soil systems

Abstract

Work is reported of the development of clay and resin model soil systems for the observation of induced polarisation phenomena. A measuring technique is developed to determine impedance spectra of such models over the frequency range of 10-3 to 10 4 Hz, and a variety of model cells tested varying such parameters as temperature, electrolyte type and concentration, and bead size of resin. An increase in impedance with decrease in frequency is observed, consistent with field observation of the induced polarisation phenomenon associated with moist, non-mineralised soils, and a number of empirical observations of the form of this are made.