References(56) A series of experimental trial for estimating the coefficient of earth pressure at rest, K0, is presented. The developed apparatus is a modified Oedometer covered with pressurized chamber specially designed for K0 determination based on the principle of effective stress originally proposed by Ohta et al. (1979). K0 is estimated from the developed apparatus primarily by means of load cell and auxiliary by means of pore pressure transducer aiming at confirming the test results. K0 triaxial consolidation is carried out to verify the result of purposed method. K0 values are obtained using Oedometer tests on two samples one of which is taken horizontally and the other is taken vertically from a block sample and K0 values from empirical equation are also estimated for comparison. It was found that the proposed method gives a comparable K0 of kaolin to K0 triaxial consolidation method but somewhat higher than those from empirical equations and lower than K0 obtained using Oedometer.
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