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Volume 41 Issue 12
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GAO You, SUN De-an, ZHANG Jun-ran, LUO Ting. Soil-water characteristics of unsaturated soils considering initial void ratio and hydraulic path[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(12): 2191-2196. DOI: 10.11779/CJGE201912003
Citation: GAO You, SUN De-an, ZHANG Jun-ran, LUO Ting. Soil-water characteristics of unsaturated soils considering initial void ratio and hydraulic path[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(12): 2191-2196. DOI: 10.11779/CJGE201912003
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Soil-water characteristics of unsaturated soils considering initial void ratio and hydraulic path

  • 1. Faculty of Architecture, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China;
    2. Department of Civil Engineering, Shanghai University, Shanghai 200444, China;
    3. Henan Province Key Laboratory of Rock and Soil Mechanics and Structural Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
    4. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China

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  • Received Date: May 19, 2019
  • Published Date: December 24, 2019
    Graphical Abstract
    • Abstract
  • To investigate the effects of the initial void ratio on the soil-water characteristic curves of non-expansive clay under different hydraulic paths, the suction is imposed or measured using the pressure plate method. The experimental results show that the obvious hysteresis phenomenon can be observed in the soil water characteristic curve (SWCC) with different initial void ratios. The main drying SWCCs of compacted specimens with different void ratios coincide with each other at the suction higher than a specific suction value when they are expressed by the relation between suction and water content. When the SWCC is expressed by the relation between suction and degree of saturation, the influence of the initial void ratio is highlighted. Moreover, a method to normalize the main drying and wetting SWCC in full suction range is proposed. Finally, a method to describe the hydraulic hysteresis behavior of specimens with different initial void ratios is proposed, and the predicted results are compared well with measured values.
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    • References (16)
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