In this study, normally consolidated clays were subjected to undrained cyclic simple shear followed by drainage. Then the shear strain amplitudes (γ) and number of cycles (n) were changed and the effects of Atterberg's limits on the pore water pressure accumulation and recompression were investigated. In conclusion, the pore water pressure accumulation and the settlement of saturated clays are significantly affected by the Atterberg's limits. For Kaolin with low plasticity index (I_p), the pore water pressure rapidly increases and becomes stable after relatively small number of cycles n. Meanwhile for Tokyo bay clay and Kitakyushu clay with higher I_p the cyclic shear-induced pore water pressure is rather small leading to smaller post-cyclic settlement. The cyclic recompression index (C_(dm)) of Kaolin is unchanged with n while those of Tokyo bay clay and Kitakyushu clay significantly decrease with n. By using these results, the post-cyclic settlement of clays was sucessfully predicted.
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