Experimental Study on the Swelling Behavior of Expansive Soil at Different Depths under Unidirectional Seepage
文献类型：期刊论文
| 作者 | She, Jianbo; Lu, Zheng; Yao, Hailin; Fang, Ran; Xian, Shaohua |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2019 |
| 卷号 | 9期号:6页码:- |
| 关键词 | expansive soil swelling behavior soil depth unidirectional seepage electric charge effect |
| DOI | 10.3390/app9061233 |
| 英文摘要 | The swelling properties of expansive soil at different depths were investigated by the laboratory model test. It was experimentally found that the swelling deformation of different expansive soil layers was obviously different under unidirectional seepage. Pore solution collection boxes were designed to collect the pore solution of different soil layer interfaces during the saturation process. Cation concentration tests were then used to analyze the migration regulation of cations in these soil layers. Results showed that the divalent cations in the surface soil layer migrated downward along with water molecules and aggregated around clay particles to form the electrical environment in expansive soil. Additionally, swelling tests were performed to compare with their initial values to research the variation of swelling behavior of expansive soil at different depths after completion of the model test. It was observed that the swelling potential of the surface expansive soil layer at a depth of 0-30 mm was released while that of the middle and bottom ones at depths of 90-120 mm and 180-210 mm was inhibited. An analysis on the above results was used to clarify the mechanism controlling the swelling difference of different expansive soil layers. This swelling difference may be explained by the joint effect of two factors that can be treated as an electric charge effect, namely (i) the modification effect, (ii) the electrical environment. |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000464379100005 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15020]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China; 3.Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | She, Jianbo,Lu, Zheng,Yao, Hailin,et al. Experimental Study on the Swelling Behavior of Expansive Soil at Different Depths under Unidirectional Seepage[J]. APPLIED SCIENCES-BASEL,2019,9(6):-. |
| APA | She, Jianbo,Lu, Zheng,Yao, Hailin,Fang, Ran,&Xian, Shaohua.(2019).Experimental Study on the Swelling Behavior of Expansive Soil at Different Depths under Unidirectional Seepage.APPLIED SCIENCES-BASEL,9(6),-. |
| MLA | She, Jianbo,et al."Experimental Study on the Swelling Behavior of Expansive Soil at Different Depths under Unidirectional Seepage".APPLIED SCIENCES-BASEL 9.6(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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