Producing pore pressure due to heat for bentonite-sand mixture with difference dry densities
Producing pore pressure due to heat for bentonite-sand mixture with difference dry densities
Radioactive waste has to be isolated from the human habitat for absolutely so long time period until its radioactivity has decayed to an innocuous situation. Many researchers have reported and demonstrated the interpretation of thermal hydration mechanical chemical couple phenomena (i.e. THMC phenomena) for unsaturated-saturated bentonite. There is lack to measure the pore pressure, and discuss the fluid pressure phenomena. This study represents pore pressure associated to heat, and have used in developed steel mold accomplished crucial pressure sensor within the high resistance to temperature. The materials used in this test program are bentonite and sand, and the bentonite is sodium type and sand are classified into silica. The bentonite sand mixture remains a ratio of 70% and 30% in dry weight. The specimen variety from 0.80 Mg/m3 to 1.80 Mg/m3 in dry density. The specimen closed in the steel mold have received heat performance, and the temperature achieve to 80 degrees Celsius. The pore pressures result that all of specimens with the difference dry densities describe more than 10 kPa in the pressure, and the dense specimens verify the high pore pressures.
Tomoyoshi Nishimura
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
E - Environment, water and energy
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