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Volume 39 Issue 12
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LIU Xin-rong, YUAN Wen, FU Yan, WANG Zi-juan, ZHU Le-wen, XIE Ying-kun. Deterioration rules of shear strength in sandstones under wetting and drying cycles in acid and alkali environment[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(12): 2320-2326. DOI: 10.11779/CJGE201712022
Citation: LIU Xin-rong, YUAN Wen, FU Yan, WANG Zi-juan, ZHU Le-wen, XIE Ying-kun. Deterioration rules of shear strength in sandstones under wetting and drying cycles in acid and alkali environment[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(12): 2320-2326. DOI: 10.11779/CJGE201712022
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Deterioration rules of shear strength in sandstones under wetting and drying cycles in acid and alkali environment

  • 1. College of Civil Engineering, Chongqing University, Chongqing 400045, China;
    2. Faculty of Construction Management and Real Estate, Chongqing University, Chongqing 400045, China;
    3. Anyang Center Administration Committee, Ruian 325200, China;
    4. Chongqing Gaoxin Engineering Survey and Design Institute Ltd., Co., Chongqing 401121, China

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  • Received Date: May 22, 2016
  • Published Date: December 24, 2017
    Graphical Abstract
    • Abstract
  • In order to study the deterioration rules of shear strength in sandstones under wetting and drying cycles, sandstone specimens are tested after 1, 3, 6, 10 wetting and drying cycles in the environment of pH=7, 9, 4. Through UCS and TCS after different cycles, the cohesion and internal friction angle of sandstone are calculated, and the relation formulae between them and number of cycles N are determined, respectively, thus the shear strength is obtained under wetting and drying cycles in acid and alkali environment. The results show that the shear strength of sandstone decreases with the increase of cycles. In the early stage of cycles, the deterioration effect is comparatively significant, and the deterioration of shear strength is very large, then, the strength deterioration is relatively small. In the acidic environment, the deterioration of shear strength in sandstones is the most serious, slightly reduced in the alkaline environment, and the neutral condition is the lightest. The deterioration of shear strength in dried samples is much lower than that of wet samples.
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    • References (13)
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