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タイトル: Undrained shear behavior of loess saturated with different concentrations of sodium chloride solution
著者: Zhang, Fanyu
Wang, Gonghui
Kamai, Toshitaka  KAKEN_id
Chen, Wenwu
Zhang, Dexuan
Yang, Jun
著者名の別形: 王, 功輝
キーワード: Sodium chloride
Loess landslide
Undrained shear behavior
Irrigation
発行日: Mar-2013
出版者: Elsevier B.V.
誌名: Engineering Geology
巻: 155
開始ページ: 69
終了ページ: 79
抄録: A series of ring-shear tests was conducted on saturated loess to investigate the effects of NaCl concentration in pore water and desalinization on the shear behavior under undrained conditions. The loess samples were taken from the ground surface of a frequently active landslide in China, were saturated by de-aired, distilled water with different concentrations of NaCl, and then were sheared undrained. After that, the samples were retrieved, remolded, re-set into the shear box, and re-saturated by passing through de-aired, distilled water such that the samples were desalinized, and then were sheared undrained again. Through comparing the undrained shear behavior, the effects of NaCl in the pore-water and desalinization on the undrained shear behavior of loess were examined. The results showed that the variation of NaCl concentration in pore water can strongly affect the shear behavior of saturated loess. Both the peak shear strength and steady-state strength increased with increase of NaCl concentration until a certain value, after which they decreased with further increase of NaCl concentration. Meanwhile, the peak shear strength and steady-state strength of the desalinized samples recovered to those of the original sample; hence, the effects of salinization are reversible. These findings may be of practical importance to better understand the repeated occurrence of some irrigation-induced loess landslides in China.
著作権等: © 2013 Elsevier B.V.
This is not the published version. Please cite only the published version.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/173358
DOI(出版社版): 10.1016/j.enggeo.2012.12.018
出現コレクション:学術雑誌掲載論文等

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