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Effect of temperature on soil-water characteristics and hysteresis of compacted Gaomiaozi bentonite

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Abstract

Laboratory tests under different constraint conditions were carried out to obtain the soil-water retention curves (SWRCs) of highly-compacted confined/unconfined Gaomiaozi (GMZ) bentonite at 20, 40 and 80 °C, respectively. The effect of temperature on the soil-water characteristics of the highly-compacted GMZ bentonite was analyzed. The results show that the water retention capacity of the highly-compacted GMZ bentonite decreases as the temperature increases under unconfined and confined conditions. At a certain temperature, the constraint conditions have little influence on the water retention capacity of the compacted bentonite at high suction, but the water retention capacity of the confined specimen is lower than that of the unconfined specimen at low suction. Under unconfined conditions, the hysteretic behaviour of the compacted bentonite decreases with increasing temperature. At high suction (>4 MPa), the hysteretic behaviour of the unconfined bentonite tends to increase with the decrease of the suction. In summary, the hysteretic behaviour of the compacted bentonite is not significant.

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Authors and Affiliations

  1. Key Laboratory of Geotechnical and Underground Engineering, Ministry of Education, Tongji University, Shanghai, 200092, China

    Wei-min Ye  (叶为民), Min Wan  (万 敏), Bao Chen  (陈 宝) & Yong-gui Chen  (陈永贵)

  2. United Research Center for Urban Environment and Sustainable Development, Ministry of Education, Shanghai, 200092, China

    Wei-min Ye  (叶为民)

  3. Ecole des Ponts Paries Tech, Paris, France

    Yu-jun Cui  (崔玉军)

  4. Beijing Research Institute of Uranium Geology, Beijing, 100029, China

    Ju Wang  (王 驹)

Authors
  1. Wei-min Ye  (叶为民)
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  2. Min Wan  (万 敏)
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  3. Bao Chen  (陈 宝)
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  4. Yong-gui Chen  (陈永贵)
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  5. Yu-jun Cui  (崔玉军)
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  6. Ju Wang  (王 驹)
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Corresponding author

Correspondence to Wei-min Ye  (叶为民).

Additional information

Foundation item: Projects(40772180, 40572161, 40802064) supported by the National Natural Science Foundation of China; Project ([2007]831) supported by Commission of Science, Technology and Industry for National Defense of China; Project(07JJ4012) supported by Hunan Provincial Natural Science Foundation of China; Project(20080430680) supported by China Postdoctoral Science Foundation; Project(08R214155) supported by Shanghai Postdoctoral Scientific Program of China; Project(B308) supported by Shanghai Leading Academic Discipline Project of China

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Ye, Wm., Wan, M., Chen, B. et al. Effect of temperature on soil-water characteristics and hysteresis of compacted Gaomiaozi bentonite. J. Cent. South Univ. Technol. 16, 821–826 (2009). https://doi.org/10.1007/s11771-009-0136-x

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  • DOI: https://doi.org/10.1007/s11771-009-0136-x

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