| Salt crystallization in cold sulfate saline soil | |
| Wan, Xusheng1; Hu, Qijun1; Liao, Mengke2,3 | |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 2017-05-01 | |
| 卷号 | 137页码:36-47 |
| 关键词 | Supersaturation ratio Sodium sulfate decahydrate Surface free energy Critical nucleation radius Salt expansion force Frost heave pressure |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2017.02.007 |
| 通讯作者 | Wan, Xusheng(xinyanwanxxusheng@163.com) |
| 英文摘要 | The effect of sodium sulfate crystallization on soil freezing temperature, and the changes in salt expansion and frost heave pressure with temperature were analyzed experimentally and using crystallization theory. The Pitzer ion model was used to find the supersaturation ratio of a sodium sulfate solution in soil.The relationship between the initial supersaturation ratio and temperature was obtained, which provided criteria for the presence of salt crystals over the entire temperature range. Experiments were carried out to determine the effect of cooling the sodium sulfate saline soil as well as the location of salt crystallization. Analysis of the location and shape change of salt crystals based on the experiments clarified the interaction between salt crystallization and ice-water phase change. A formula relating the surface free energy of a crystal to its critical nucleation radius was deduced based on the assumption of homogeneous nucleation. Finally, equations for the salt expansion force and frost heave pressure were obtained and their rationalizations were provided.(C) 2017 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | POROUS MATERIALS ; CRYSTAL-GROWTH ; MINERAL SOLUBILITIES ; MODEL ; PRESSURE ; SYSTEM |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000397687500005 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557570 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wan, Xusheng |
| 作者单位 | 1.Southwest Petr Univ, Sch Civil Engn & Architecture, Chengdu 610513, Sichuan, Peoples R China 2.State Grid Xinjiang Econ Res Inst, Urumqi Xingjiang 830000, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Xusheng,Hu, Qijun,Liao, Mengke. Salt crystallization in cold sulfate saline soil[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2017,137:36-47. |
| APA | Wan, Xusheng,Hu, Qijun,&Liao, Mengke.(2017).Salt crystallization in cold sulfate saline soil.COLD REGIONS SCIENCE AND TECHNOLOGY,137,36-47. |
| MLA | Wan, Xusheng,et al."Salt crystallization in cold sulfate saline soil".COLD REGIONS SCIENCE AND TECHNOLOGY 137(2017):36-47. |
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