Abstract
To investigate the unsaturated soil properties, the measurement of volume change is dealt with both water and air volume changes. It cannot be defined by using only the volume of water flown in out from the specimen as saturated soil. This paper presents the volume change measurement by using image processing (IP) from the series of consolidated undrained (CU) and constant water content (CW) tests for saturated and unsaturated conditions of soil, respectively. The results, obtained between IP and the cell liquid measurement considered movement of piston and the cell expansion effect with pressure including creep, are good corresponding except the specimen has an irregular deformation.
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