The effects of time, stress, and matric suction on the volume change behaviour of an unsaturated compacted organic soil were studied by performing suction-controlled oedometer tests. The a,b,c isotache model which is known for saturated soft soils was adapted for unsaturated conditions. In addition, the patterns of isotaches for the soil structure and water phase were studied at constant values of net normal stress and matric suction. Furthermore, the suction-controlled oedometer tests were simulated using the adapted model and compared with the test results of overall volume and water volume changes.
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The effects of time, stress, and matric suction on the volume change behaviour of an unsaturated compacted organic soil were studied by performing suction-controlled oedometer tests. The a,b,c isotache model which is known for saturated soft soils was adapted for unsaturated conditions. In addition, the patterns of isotaches for the soil structure and water phase were studied at constant values of net normal stress and matric suction. Furthermore, the suction-controlled oedometer tests were simu...
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