Microstructural evolution of expansive clay during drying-wetting cycle
文献类型：期刊论文
| 作者 | Ma, Tiantian4; Wei, Changfu3; Yao, Chuanqin2; Yi, Panpan1 |
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2020-02-18 |
| 页码 | 12 |
| 关键词 | Drying-wetting cycle Expansive soil Microscopic structure Pore size distribution Water distribution |
| ISSN号 | 1861-1125 |
| DOI | 10.1007/s11440-020-00938-4 |
| 英文摘要 | This paper presents a comprehensive investigation on the microstructural evolutions of expansive clay during a drying-wetting cycle, including pore size distribution (PSD) via mercury intrusion porosimetry and water distribution via nuclear magnetic resonance (NMR). The soil water characteristic curves at different soil densities and soil shrinkage curve are also obtained, and a threshold suction can be identified to distinguish the adsorptive and capillary regimes of pore water. Combined with the water distribution obtained by the NMR technique, the evolutions of the adsorptive water and capillary water during drying-wetting cycle were addressed. The measured PSD curves of the expansive soils at different suctions showed two distinct peaks, corresponding to micropores and macropores, respectively. Both variations of macropores and micropores are irreversible during the wetting-drying cycle, which partly explain the adsorptive water content decreasing when the suction is small. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[41972290] ; National Natural Science Foundation of China (NSFC)[41877269] ; National Natural Science Foundation of China (NSFC)[51639008] ; Hubei Provincial Natural Science Foundation of China[2017CFB225] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000516297400001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23621]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Ma, Tiantian |
| 作者单位 | 1.Wuchang Univ Technol, Wuhan 430223, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guilin Univ Technol, Coll Civil & Architectural Engn, Guilin 541004, Guangxi, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Tiantian,Wei, Changfu,Yao, Chuanqin,et al. Microstructural evolution of expansive clay during drying-wetting cycle[J]. ACTA GEOTECHNICA,2020:12. |
| APA | Ma, Tiantian,Wei, Changfu,Yao, Chuanqin,&Yi, Panpan.(2020).Microstructural evolution of expansive clay during drying-wetting cycle.ACTA GEOTECHNICA,12. |
| MLA | Ma, Tiantian,et al."Microstructural evolution of expansive clay during drying-wetting cycle".ACTA GEOTECHNICA (2020):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。