A NEW 2-POINT METHOD OF OBTAINING C-V FROM A CONSOLIDATION TEST

The time factor, T, and the degree of consolidation, U, from Terzaghi's theory of consolidation can be shown to have a straight line relationship when plotted as log[-T/log(T/U)] versus log T. Oedometer tests were conducted on five soils with a wide variation in properties. The results obtained establish straight line variation between log[t/log(t/delta)] and log t plots. Using this property, a method is proposed to predict the compression (delta) versus time (t) behaviour of clayey soils by measuring the compression values of a soil specimen at only two time intervals in oedometer test. Variation of delta with t is predicted using the proposed method for some of the soils tested, and the computed values of C-V are compared with the actual experimental C-V values. Some of the published test results are used to validate the proposed method.