A laboratory investigation was carried out on stiffness and residual strain of municipal solid waste based on the data from cyclic triaxial test in this paper. Two different types of cyclic loads using a sinusoidal cyclic axial stress with frequency of 1 Hz were applied to the specimen, one on the triaxial compression side and the other on both compression and extension side. The results of modulus, residual strain are reviewed and the corresponding formulation is presented.
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