Pore-water pressure development in a frozen saline clay under isotropic loading and undrained shearing

Abstract A systematical testing program on frozen Onsøy clay under isotropic loading and undrained shearing at different temperatures (? 3 ~ ? 10 °C), strain rates (0.2~5%/h) initial Terzaghi effective stress (20~400 kPa) was conducted with the focus pore pressure development. It is meant to increase understanding facilitate development of an ‘effective stress’-based model for multi-physical analysis soils. This study adopted measurement method suggested by Arenson Springman (Can Geotech J 42 (2):412–430, 2005. https://doi.org/10.1139/t04-111) developed a new procedure soils, including ‘slow’ freezing sample preparation post-freezing consolidation securing hydraulic equilibrium. The B-value soils less than 1 significantly dependent temperature history. dilative tendency or in condition found be both unfrozen water content mean stress, which consistent Besides, experimental results reported literature regarding uniaxial tests show that shear strength does not share same temperature- salinity-dependency soil types. rate dependency characterized between pure ice therefore highly determined viscous behavior (through dependency). paper also explains response thawing volumetric evolution skeleton.