IN-SITU VOLUME-CHANGE PROPERTIES BY ELECTRO-OSMOSIS --THEORY

The basic concept involves incorporation of a simple electrode system in a field probe, measurement of pore-water pressure changes at the electrodes as a function of time in response to a DC field, and measurement of the electro-osmotic flow rate of water. Mathematical solutions for pore-water pressure responses for different electrode geometry and drainage conditions at the electrodes are presented dimensionless form, so that measurement of pore-water pressure responses at the electrodes as a function of time for a relatively short period should enable computation of the coefficient of consolidation, c sub v and the ratio of the coefficient of electro-osmotic conductivity to hydraulic conductivity,k sub e/k sub h. Unique solutions for k sub e, k sub h, and the coefficient of volume change, m sub v, are shown to be possible using measured electro-osmotic flow rate in a closed loop between electrodes and comparison with theory. (AUTHORS)

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  • Accession Number: 00315380
  • Record Type: Publication
  • Report/Paper Numbers: ASCE15370
  • Files: TRIS
  • Created Date: Feb 6 1981 12:00AM