ABSTRACT
This study investigated the gas pore fluid pressure generated by heating and swell-ing pressures for a bentonite sand mixture under unsaturated and saturated conditions. The effort of temperate is closely to research one of thermal-hydration-mechanical-chemical couple phe-nomes. The gas pore fluid pressure according to increment of temperature in the closed chamber. The whole mold was placed in a thermostat oven, in which controlled a range from twenty degrees Celsius to 80 degrees Celsius. Variations of dry densities are used to verify gas migration. In addition, this study measured the swelling pressure for sodium bentonite sand mixture in which swelling pressure tests were conducted using a developed heat-temperature-controlling pedome-ter apparatus, which consisted of an acrylic chamber, thermostat chamber, load cell, and heating water bath including silicone liquid. The efforts of temperature and salinity water is focused on the swelling pressure of the bentonite sand mixture.
