Compressibility behaviour of clays at large pressures

Authors:
  • STSnehasis Tripathy
    Snehasis Tripathy
  • TSTom Schanz
    Tom Schanz
Publisher website
Google Scholar
Abstract
In this study, a method is proposed on the basis of the diffuse double layer theory to determine the compressibility of clays for one-dimensional conditions for vertical pressures far greater than the testing range of conventional oeodometer tests. Experimental e–p curves of several reported bentonitic clays were considered to verify the proposed method. It is shown that the parameters required to use the diffuse double layer theory can be obtained from the experimental e–p data for a low range of pressure and those can in turn be used to compute void ratios at higher vertical pressures. The stepwise procedure to calculate the e–p relationships at high pressure is given. The results showed that the agreement between the calculated and experimental compression characteristics at large vertical pressures is very good for the clays considered in this study.Key words: clays, compressibility, consolidation, expansive soils.

This publication has 15 references indexed in Scilit: