Model tests for the inhibition effects of cohesive non-swelling soil layer on expansive soil
文献类型：期刊论文
| 作者 | Lu, Zheng; Tang, Chuxuan; Yao, Hailin; She, Jianbo; Cheng, Ming; Qiu, Yu; Zhao, Yang |
| 刊名 | GEOMECHANICS AND ENGINEERING
 |
| 出版日期 | 2022-04-10 |
| 卷号 | 29期号:1页码:91 |
| ISSN号 | 2005-307X |
| 关键词 | cohesive non-expansive soil electrical resistivity expansive soil model test soil pressure swelling deformation |
| 英文摘要 | The cohesive non-swelling soil (CNS) cushion technology has been widely applied in the subgrade and slope improvement at expansive soil regions. However, the mechanism of the inhibition effect of the CNS layer on expansive soil (ES) has not been fully understood. We performed four outdoor model tests to further understand the inhibition effect, including different kinds of upper layer and thickness, under the unidirectional seepage condition. The swelling deformation, soil pressure, and electrical resistivity were constantly monitored during the saturation process. It is found that when a CNS layer covered the ES layer, the swelling deformation and electrical resistivity of the ES layer decreased significantly, especially the upper part. The inhibition effect of the CNS layer increases with the increase of CNS thickness. The distribution of vertical and lateral soil pressure also changed with the covering of a CNS layer. The electrical resistivity can be an effective index to describe the swelling deformation of ES layer and analyze the inhibition effect of the CNS layer. Overall, the CNS deadweight and the ion migration are the major factors that inhibit the swelling deformation of expansive soil. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| 出版者 | TECHNO-PRESS |
| WOS记录号 | WOS:000779791700008 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35296]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Lu, Zheng,Tang, Chuxuan,Yao, Hailin,et al. Model tests for the inhibition effects of cohesive non-swelling soil layer on expansive soil[J]. GEOMECHANICS AND ENGINEERING,2022,29(1):91. |
| APA | Lu, Zheng.,Tang, Chuxuan.,Yao, Hailin.,She, Jianbo.,Cheng, Ming.,...&Zhao, Yang.(2022).Model tests for the inhibition effects of cohesive non-swelling soil layer on expansive soil.GEOMECHANICS AND ENGINEERING,29(1),91. |
| MLA | Lu, Zheng,et al."Model tests for the inhibition effects of cohesive non-swelling soil layer on expansive soil".GEOMECHANICS AND ENGINEERING 29.1(2022):91. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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