Evaluation of Liquefaction Possibility of Ground Based on Grain Size Distribution and Soil Plasticity

Interest in liquefaction has increased owing to the increasing occurrence of liquefaction in the country. According to previous studies, factors that influence liquefaction include the grain size distribution, plasticity, relative density, overconsolidation ratio, and confining conditions. In this study, the liquefaction possibility was evaluated based on grain size distribution and soil plasticity. Based on the grain size distribution, a clear correlation between the liquefaction resistance of the two samples could not be identified because both samples showed similar grain size distributions. In contrast, in terms of soil plasticity, the liquefaction resistance value increased with increasing plasticity index value. These results indicate that soil plasticity has a significant effect at a similar grain size distribution.