• Proceedings of the Korean Geotechical Society Conference
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• 1996.10a
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• pp.165-172
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• 1996

• Geotechnical Engineering
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• v.14 no.5
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• pp.111-128
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• 1998

An experimental study, which included four 305mm-diameter test shafts, one reference shaft with standard design and three test shafts with isolation tubes, is described. The soil was also soil heave and shrinkage that occur during suction changes at the field site. The test shafts were monitored for a period of about 18 months. Maximum ground movements exceeding 35mm were observed. Movements of only 1 to 2mm were observed in the test shafts with isolation tubes, while movements of 4 to 5mm were observed in the reference shaft. A simple computing model was developed to predict, based on suction changes, the maximum amount of ground heave. Relationship among suction. total stress, and volumetric strain was abtained in the laborstory. This relationship, used as inputs to the predictive model, enabled the computation of the maximum ground heave.