ON THE COEFFICIENT OF CONSOLIDATION OF COMPACTED SOILS

The present experimental investigation deals with the determination and comparison of cv of compacted soils by different methods. The values of cv were determined by the conventional G-• t & G-log t methods, in addition to rectangular hyperbola, log G - log t and one point methods. The compacted soils are characterised by the presence of yield stress, which is akin to the preconsolidation stress of undisturbed soils. The paper discusses the feasibility of these methods in the pre-yield region, transition region and the post-yield region of the compressibility behavior of compacted soils. A comparative study of the values of cv obtained from the G - o t, G - log t, rectangular hyperbola & log G - log t methods with those obtained from one point method has also been done. The study indicates that the one point method predicts comparable values of cv for compacted soils and hence, recommended in view of its simplicity.