Liquefaction at a housing site reclaimed using well-graded gravelly soil

Abstract

Penetration resistance results of the Swedish weight sounding test are known to vary at housing sites where demolition waste or crushable soft rock is mixed. This study investigated a housing site at a coastal area reclaimed using well-graded gravelly soil. To estimate the liquefaction characteristics and the applicability of existing methods for predicting liquefaction at housing sites with gravelly soils, in-situ investigations and laboratory tests were conducted. Results revealed that the penetration resistance increased concomitantly with gravel content, but the liquefaction strength increased only slightly. Based on the study results, an investigation method was demonstrated, as described herein.