Prof. D. N. Singh

AJAZ MASOOD BHAT

M.Tech.
Indian Institute of Technology Bombay, Powai, India ajazmasood@rediffmail.com

CHARACTERIZATION OF COARSE- AND FINE-GRAINED GEOMATERIALS USING IMPEDANCE SPECTROSCOPY

A methodology which employs impedance spectroscopy has been developed for determining electrical conductivity and dielectric dispersion of various materials such as soils and glass-beads. Further, a generalized relationship which yields dielectric constant of these materials, corresponding to a given frequency of AC, and their compaction states has been proposed. The study also demonstrates utility of the impedance spectroscopy in developing equivalent circuits that idealize the flow of current in the soil mass. It has been shown that impedance response of these materials can be employed very well for characterizing the soil mass for its saturated as well as unsaturated states.