A model of unfrozen water content in rock during freezing and thawing with experimental validation by nuclear magnetic resonance
文献类型：期刊论文
| 作者 | Su, Zhouzhou3,4; Tan, Xianjun3; Chen, Weizhong3; Jia, Hailiang1; Xu, Fei2,3 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 14期号:5页码:1545 |
| 关键词 | Freezing and thawing Unfrozen water content Super-cooling and hysteresis Nuclear magnetic resonance (NMR) Unfrozen water calculation model Red sandstone |
| ISSN号 | 1674-7755 |
| 英文摘要 | The unfrozen water content of rock during freezing and thawing has an important influence on its physical and mechanical properties. This study presented a model for calculating the unfrozen water content of rock during freezing and thawing process, considering the influence of unfrozen water film and rock pore structure, which can reflect the hysteresis and super-cooling effects. The pore size distribution curves of red sandstone and its unfrozen water content under different temperatures during the freezing and thawing process were measured using nuclear magnetic resonance (NMR) to validate the proposed model. Comparison between the experimental and calculated results indicated that the theoretical model accurately reflected the water content change law of red sandstone during the freezing and thawing process. Furthermore, the influences of Hamaker constant and surface relaxation parameter on the model results were examined. The results showed that the appropriate magnitude order of Hamaker constant for the red sandstone was 10(-1)8 J to 10(-18) J; and when the relaxation parameter of the rock surface was within 25-30 mu m/ms, the calculated unfrozen water content using the proposed model was consistent with the experimental value. (C) 2022 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000891299800016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35355]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.College of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, 710054, China 2.Structural Health Monitoring and Control Institute, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 4.University of Chinese Academy of Sciences, Beijing, 100049, China |
| 推荐引用方式 GB/T 7714 | Su, Zhouzhou,Tan, Xianjun,Chen, Weizhong,et al. A model of unfrozen water content in rock during freezing and thawing with experimental validation by nuclear magnetic resonance[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2022,14(5):1545. |
| APA | Su, Zhouzhou,Tan, Xianjun,Chen, Weizhong,Jia, Hailiang,&Xu, Fei.(2022).A model of unfrozen water content in rock during freezing and thawing with experimental validation by nuclear magnetic resonance.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,14(5),1545. |
| MLA | Su, Zhouzhou,et al."A model of unfrozen water content in rock during freezing and thawing with experimental validation by nuclear magnetic resonance".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 14.5(2022):1545. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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