An experimental study on the influence of cooling rates on salt expansion in sodium sulfate soils
文献类型：期刊论文
| 作者 | Lai, Yuanming1,3; Wan, Xusheng2; Zhang, Mingyi1 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 124页码:67-76 |
| 关键词 | Sodium sulfate saline soil Salt expansion Supersaturation ratio The rate of crystal growth Phase change Qinghai-Tibet plateau |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2015.12.014 |
| 通讯作者 | Lai, Yuanming(ymlai@lzb.ac.cn) |
| 英文摘要 | This experimental study examined salt expansion in sodium sulfate soils. The results indicated that salt expansion was caused by the crystallization of sodium sulfate decahydrate when the supersaturation ratio of the sodium sulfate solution in the soil reached a maximum value. The maximum supersaturation ratio of the sodium sulfate solution decreased as the sodium sulfate content increased, and the supersaturation ratio decreased as crystals continued to precipitate. The total amount of crystal generation was related to the crystal growth rate. The rate of crystal growth decreased exponentially as temperature decreased. The formation of crystals was influenced by the rate of cooling. When mirabilite began to precipitate, the supersaturation rate was reduced versus the rate of cooling, whereas the salt expansion rate of the soil increased. When the salt content of sodium sulfate was less than 1.5%, salt crystals began to form after the phase change of the solution from water to ice, but salt expansion did not occur. When salt content of sodium sulfate was less than 0.7%, the precipitation of salt crystals was minimal or did not occur. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | POROUS MATERIALS ; CRYSTALLIZATION |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000371903000006 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557370 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lai, Yuanming |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 2.Southwest Petr Univ, Sch Civil Engn & Architecture, Chengdu 610513, Sichuan, Peoples R China 3.Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai, Yuanming,Wan, Xusheng,Zhang, Mingyi. An experimental study on the influence of cooling rates on salt expansion in sodium sulfate soils[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2016,124:67-76. |
| APA | Lai, Yuanming,Wan, Xusheng,&Zhang, Mingyi.(2016).An experimental study on the influence of cooling rates on salt expansion in sodium sulfate soils.COLD REGIONS SCIENCE AND TECHNOLOGY,124,67-76. |
| MLA | Lai, Yuanming,et al."An experimental study on the influence of cooling rates on salt expansion in sodium sulfate soils".COLD REGIONS SCIENCE AND TECHNOLOGY 124(2016):67-76. |
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来源：寒区旱区环境与工程研究所
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