Electrokinetic monitoring of synthetic geoclay liners

On-going work and preliminary results are presented from impedance spectroscopy investigations of sodium bentonite. The purpose of the work is to find out if alternating electric current measurements might be utilised for monitoring the conditions of synthetic geoclay liners. Theoretical analyses as well as preliminary results indicate that sufficient alteration in the signal might be obtained for variation in moisture content, salt content and location, as desired. The results also indicate that the impedance spectroscopy method is applicable for the understanding of the microstructural aspects of bentonite.