Abstract
High-quality undisturbed samples of sand that had been compacted by a vibratory sand compaction pile method were obtained by in situ freezing. Undrained cyclic triaxial tests were conducted on specimens prepared from the samples after they had been thawed, saturated and consolidated. The relationship between the liquefaction resistance of the specimens and the SPT N-values corrected for a vertical effective stress of 1 kgf/cm2 (98 kPa), N1, is consistent with that for natural deposits of clean sands, over a range of N1 between 21 and 28. It is concluded, therefore, that the liquefaction resistance of compacted sands can be evaluated on the basis of N1 using the relationship established for natural sand deposits.
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