Impact of sodium sulfate on soil frost heaving in an open system
文献类型：期刊论文
| 作者 | Bing, Hui; He, Ping; Yang, Chengsong; Shi, Yehul; Zhao, Shuping; Bian, Xiaolin |
| 刊名 | APPLIED CLAY SCIENCE
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 35期号:3-4页码:189-193 |
| 关键词 | clay soil frost heaving salt expansion dry density Qinghai-Tibet Railway |
| ISSN号 | 0169-1317 |
| DOI | 10.1016/j.clay.2006.09.007 |
| 通讯作者 | Bing, Hui(binghui@lzb.ac.cn) |
| 英文摘要 | The existence of solutes and their redistribution during freezing have a deep influence on the process of soil freezing. We performed unidirectional freezing experiments in an open system with red clay collected at the Beiluhe test site along the Qinghai-Tibet Railway. The groundwater supply of the soil was simulated in the laboratory experiment by attaching a liquid replenishment system to the bottom of the sample container. In order to see the influence of the salt on the evolution of the sample during unidirectional freezing, two types of experiments were performed. (i) The soil samples were supplied with a sodium sulfate solute of 5% concentration, and (ii) only distilled water without any salty component was added. Based on the freezing temperature measurements of salty soil, migration of sodium sulfate solution towards a lower temperature zone during freezing 0 degrees C isotherm in the soil moved gently towards deeper layers, but frost depth of the soil ascended slightly with time when the sample was constantly cooled. Compared to the distilled water replenishment, the amount of frost-heaving was smaller in the soil column with sodium sulfate solution replenishment. Based on the frost depth curve, the solubility curve of the Na2SO4-H2O system and the amount of frost heaving and salt expansion in the soil column we have calculated the amount of frost heaving and salt expansion. In an early stage of the experiment deformation of the soil column was mainly caused by frost heaving, while in a later phase crystallization of the sodium sulfate played a lager role. This conclusion is confirmed by the results of the dry density measurement after the experiments. (C) 2006 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS研究方向 | Chemistry ; Materials Science ; Mineralogy |
| WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000244826900006 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555908 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Bing, Hui |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 2.Beijing Jiaotong Univ, Sch Civil Engn & Architecture, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bing, Hui,He, Ping,Yang, Chengsong,et al. Impact of sodium sulfate on soil frost heaving in an open system[J]. APPLIED CLAY SCIENCE,2007,35(3-4):189-193. |
| APA | Bing, Hui,He, Ping,Yang, Chengsong,Shi, Yehul,Zhao, Shuping,&Bian, Xiaolin.(2007).Impact of sodium sulfate on soil frost heaving in an open system.APPLIED CLAY SCIENCE,35(3-4),189-193. |
| MLA | Bing, Hui,et al."Impact of sodium sulfate on soil frost heaving in an open system".APPLIED CLAY SCIENCE 35.3-4(2007):189-193. |
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来源：寒区旱区环境与工程研究所
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