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Freezing and thawing characteristics of frozen soils: Bound water content and hysteresis phenomenon
文献类型：期刊论文
| 作者 | Tian, Huihui2; Wei, Changfu1,2; Wei, Houzhen2; Zhou, Jiazuo2 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 103页码:74-81 |
| 关键词 | Frozen soil Hysteresis Nuclear magnetic resonance Bound water content Adsorption effect Capillary effect |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2014.03.007 |
| 英文摘要 | The freezing/thawing characteristics of three soils with different compositions are investigated based on the nuclear magnetic resonance (NMR) proton spin spin relaxation time (T-2) distribution and free-induction decay (FID) measurements. A threshold value of T2 is identified for defining the bound water, and the bound water contents in the soils are calculated. It is demonstrated that the bound water content varies insignificantly with temperature in all the tested soils. The hysteretic characteristics of soils are analyzed during a freezing/thawing cycle, and possible mechanisms for the hysteresis are discussed. It is found that the hysteresis loop can be divided into three distinct zones, in which the hysteresis can be accounted for by metastable nucleation, capillary and adsorption effects, and adsorption effect, respectively. A NMR-based procedure is proposed for determining the unfrozen pore water content. In particular, it is shown that the thickness of the water films decreases with the temperature in the fully-saturated frozen soils. (C) 2014 Published by Elsevier B.V. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000337649900007 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3607]  |
| 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.Guilin Univ Technol, Guangxi Key Lab New Energy & Bldg Energy Saving 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; |
| 推荐引用方式 GB/T 7714 | Tian, Huihui,Wei, Changfu,Wei, Houzhen,et al. Freezing and thawing characteristics of frozen soils: Bound water content and hysteresis phenomenon[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2014,103:74-81. |
| APA | Tian, Huihui,Wei, Changfu,Wei, Houzhen,&Zhou, Jiazuo.(2014).Freezing and thawing characteristics of frozen soils: Bound water content and hysteresis phenomenon.COLD REGIONS SCIENCE AND TECHNOLOGY,103,74-81. |
| MLA | Tian, Huihui,et al."Freezing and thawing characteristics of frozen soils: Bound water content and hysteresis phenomenon".COLD REGIONS SCIENCE AND TECHNOLOGY 103(2014):74-81. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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