Experimental Investigation on Drying and Wetting of GMZ Bentonite Using X-Ray Tomography and Volumetric Digital Image Correlation Technique
文献类型：期刊论文
| 作者 | Chen, Liufeng2; Li, Kang1; Yang, Diansen1 |
| 刊名 | ADVANCES IN CIVIL ENGINEERING
 |
| 出版日期 | 2020-12-09 |
| 卷号 | 2020页码:8 |
| ISSN号 | 1687-8086 |
| DOI | 10.1155/2020/6634246 |
| 英文摘要 | To investigate the shrinking and swelling properties of Gao-Miao-Zi (GMZ) bentonite, which has been considered as engineering barriers for high-level radioactive nuclear waste disposal in China, drying and wetting tests were carried out. The microstructure of the material at each hydric state was recorded using X-ray tomography (X-CT). The 3D images of the material were analyzed using digital volume correlation (DVC) technique, and the full-field strains at mesoscale (i.e., in the order of clay aggregate) during drying and wetting were quantified. The results show that the GMZ bentonite exhibits notable swelling characteristics during wetting and the swelling strain of the material is up to 8% at mesoscale. The full-field strain in 3D of the material is heterogeneous, anisotropic, and irreversible during drying and wetting. The corresponding deformation mechanisms are discussed. Two different swelling mechanisms were also identified: traction occurs in the interface between the matrix and inclusions during swelling; pre-existing fissure closes during swelling. |
| 资助项目 | CAS Interdisciplinary Innovation Team[JCTD-2018-17] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-423] ; Hubei Provincial Natural Science Foundation of China[2018CFA012] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000601407700005 |
| 出版者 | HINDAWI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25326]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Diansen |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Suzhou Univ Sci & Technol, Coll Civil Engn, Suzhou 215011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Liufeng,Li, Kang,Yang, Diansen. Experimental Investigation on Drying and Wetting of GMZ Bentonite Using X-Ray Tomography and Volumetric Digital Image Correlation Technique[J]. ADVANCES IN CIVIL ENGINEERING,2020,2020:8. |
| APA | Chen, Liufeng,Li, Kang,&Yang, Diansen.(2020).Experimental Investigation on Drying and Wetting of GMZ Bentonite Using X-Ray Tomography and Volumetric Digital Image Correlation Technique.ADVANCES IN CIVIL ENGINEERING,2020,8. |
| MLA | Chen, Liufeng,et al."Experimental Investigation on Drying and Wetting of GMZ Bentonite Using X-Ray Tomography and Volumetric Digital Image Correlation Technique".ADVANCES IN CIVIL ENGINEERING 2020(2020):8. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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