Liquefaction characteristics of decomposed granite soils at Kobe artificial island

The authors have studied the liquefaction characteristics of decomposed granite soil called Masado. The soil is reclaimed ground material at Kobe artificial island, which liquefied during the 1995 Hyogoken Nanbu Earthquake. To represent liquefaction resistance of soil, an energy dissipation capacity obtained from cyclic triaxial test under strain controlled condition was used. Comparing the energy dissipation capacity of Masado obtained from cyclic triaxial test with that of fine clean sand, it was found that the energy dissipation capacity of Masado has a small dependency on its relative density comparing to fine clean sand.