Characterization of microstructural features of Tamusu mudstone
文献类型：期刊论文
| 作者 | Yu, Hongdan2; Lu, Chen2,3; Chen, Weizhong2; Yang, Diansen2; Li, Honghui1 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 14期号:6页码:1923 |
| 关键词 | Tamusu mudstone Pore structure Field emission scanning electron microscopy (FE-SEM) N-2 physisorption Mercury intrusion porosimetry (MIP) |
| ISSN号 | 1674-7755 |
| 英文摘要 | Tamusu mudstone formation, located in the Alxa area in western Inner Mongolia, is considered a potential host formation for high-level radioactive waste (HLW) underground disposal in China. In this study, complementary analyses with X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), mercury intrusion porosimetry (MIP), and N-2 physisorption isotherm were conducted on the Tamusu mudstone to characterize its physical characteristics and microstructural features, such as mineral compositions and pore structure. Several minerals, including carbonates, feldspar, clays and analcime, were identified in Tamusu mudstone by XRD. Images from FE-SEM show that pores in the Tamusu mudstone were dominantly on nanometer scale and generally located within their mineral matrix or at the interface with non-porous minerals. The combination of the MIP and N-2 physisorption curves indicated that the Tamusu mudstone has diverse pore sizes, a porosity varying from 2.34% to 2.84%, and a total pore volume in the range of 0.0065-0.0222 cm(3)/g with the average pore diameter ranging from 9.6 nm to 19.23 nm. The specific surface area measured by MIP (2.572-5.861 m(2)/g) was generally higher than that by N-2 physisorption (1.29-3.04 m(2)/g), due to the pore network effect, pore shape (e.g. ink-bottle shape), or technique limits. The results related to pore information can be applied as an input in the future to model single- or multi-phase fluid flow and the transport of radionuclides in porous geomedium by migration and diffusion. (C) 2022 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000891300600017 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35192]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.China National Nuclear Corporation, Key Laboratory on Geological Disposal of High-level Radioactive Waste, China Institute for Radiation Protection, Taiyuan, 030006, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 3.University of Chinese Academy of Sciences, Beijing, 100049, China |
| 推荐引用方式 GB/T 7714 | Yu, Hongdan,Lu, Chen,Chen, Weizhong,et al. Characterization of microstructural features of Tamusu mudstone[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2022,14(6):1923. |
| APA | Yu, Hongdan,Lu, Chen,Chen, Weizhong,Yang, Diansen,&Li, Honghui.(2022).Characterization of microstructural features of Tamusu mudstone.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,14(6),1923. |
| MLA | Yu, Hongdan,et al."Characterization of microstructural features of Tamusu mudstone".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 14.6(2022):1923. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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