EFFECTIVENESS OF TEMPERATURE AND SATURATION ON THE DEFORMATION CHARACTERISTICS OF SILTY CLAY
In order to study the effectiveness of temperature and saturation on the deformation characteristics of silty clay,triaxial tests are carried out on unsaturated and saturated soils under natural moisture content using GDS unsat-urated soil triaxial testing system and GDS temperature-controlled static/dynamic triaxial testing system.The results show that the silty clays with two different saturations are characterized by strain hardening under different tempera-ture conditions.Under the same confining pressure,the axial deformation of silty clay with two different degrees of saturation increases with the decrease of temperature,and the deformation of saturated clay is larger than that of un-saturated clay.The elastic module of both saturated silty clays under the same confining pressure increased with the decrease of temperature,and the most drastic change was in the interval from 0~-2℃.The study may provide theoret-ical guidance and reference for engineering design and construction in seasonal frozen region silty clay foundations.
seasonal frozen regiondeformation parametertriaxial test