Soil-water characteristics of unsaturated organic silty soils

In existing research result, unsaturated soils is generally known to that shows the apparent cohesion and different behavior from saturated soils. Jet Fill Tensiometer and Pressure Plate Extractor tests were performed to determine matric suction for unsaturated organic silts soil. The result values of matric suction of unsaturated organic silts were compared with soil degree of saturation, water contents, and void ratio. In the experiment result, soil-water characteristic of unsaturated silty soil shows that the SWCC obtained from Jet Fill Tensiometer is different from that obtained from the conventional Pressure Plate Extractor test. The more water content is high, and matric suction is low, the more equilibrium time is fast. The fine contents of the soils is much, the elapsed time of equilibrium water contents is shorter.