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Influence of temperature on swelling characteristics of GMZ bentonite due to wetting
Received date: 2015-12-03
Online published: 2017-10-30
A series of wetting tests on GMZ07 Na-bentonite, taken from Gaomiaozi area, Inner Mongolia, were performed to investigate the swelling characteristics at different temperatures. The influences of temperature and initial dry density were studied under a vertical pressure ranging from 100 to 600 kPa. The test results show that deformation due to wetting is mainly affected by dry density and vertical pressure, and slightly affected by temperature. With the same initial dry density and temperature, the greater the vertical pressure, the less the void ratio after saturation. There is a linear relation between saturated void ratio and logarithm of vertical pressure. At the same temperature and vertical pressure, void ratios after saturation for different initial dry densities are similar. In addition,
swelling pressure decreases slightly with increasing temperature.
Key words： swelling characteristics; temperature; wetting; bentonite
JIANG Jianghong, SUN Dean . Influence of temperature on swelling characteristics of GMZ bentonite due to wetting[J]. Journal of Shanghai University, 2017 , 23(5) : 762 -771 . DOI: 10.12066/j.issn.1007-2861.1728
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