Phase Equilibrium Condition for Pore Hydrate: Theoretical Formulation and Experimental Validation
文献类型：期刊论文
| 作者 | Zhou, Jiazuo; Liang, Wenpeng; Wei, Changfu |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2019 |
| 卷号 | 124期号:12页码:12703-12721 |
| ISSN号 | 2169-9313 |
| 关键词 | phase equilibrium pore hydrate unhydrated water hydration point SHCC |
| DOI | 10.1029/2019JB018518 |
| 英文摘要 | Based on the chemical potential equilibrium of water, a generalized equation of phase equilibrium is presented for pore hydrate, which relates the temperature depression of hydrate to the capillary pressure and osmotic pressure. The relationship between capillary pressure and unhydrated water content can be characterized by a soil-water characteristic curve (SWCC). Uniting the SWCC and the phase equilibrium equation yields the equation of soil hydration characteristic curve (SHCC), which expresses the relationship between the unhydrated water content and temperature depression of pore hydrate. A series of experiments are performed, validating the phase equilibrium equation and the concept of SHCC. From the SHCC, the phase equilibrium surface can be determined in the space of temperature, pressure, and unhydrated water content. The thermodynamic state of pore hydrate moves on the equilibrium surface when the hydrate forms or dissociates. The projections of the equilibrium surface indicate the dissociation process of pore hydrate caused by thermal stimulation or depressurization. The salt solution changes the equilibrium surface to the direction that requires lower temperature and higher pressure and slows down the dissociation rates of hydrate to temperature and pressure. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000503345000001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14792]  |
| 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.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China; 2.Guilin Univ Technol, Coll Civil Engn & Architecture, Guangxi Key Lab New Energy & Bldg Energy Saving, Guilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Jiazuo,Liang, Wenpeng,Wei, Changfu. Phase Equilibrium Condition for Pore Hydrate: Theoretical Formulation and Experimental Validation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2019,124(12):12703-12721. |
| APA | Zhou, Jiazuo,Liang, Wenpeng,&Wei, Changfu.(2019).Phase Equilibrium Condition for Pore Hydrate: Theoretical Formulation and Experimental Validation.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,124(12),12703-12721. |
| MLA | Zhou, Jiazuo,et al."Phase Equilibrium Condition for Pore Hydrate: Theoretical Formulation and Experimental Validation".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 124.12(2019):12703-12721. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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