Influence of freeze-thaw on engineering properties of a silty soil
文献类型：期刊论文
| 作者 | Qi, Jilin1; Ma, Wei1; Song, Chunxia2 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2008-08-01 |
| 卷号 | 53期号:3页码:397-404 |
| 关键词 | Freeze-thaw Engineering properties Loess Critical dry unit weight |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2007.05.010 |
| 通讯作者 | Qi, Jilin(qijilin@lzb.ac.cn) |
| 英文摘要 | Freeze-thaw cycling is a weathering process which considerably changes the engineering properties of soils. Therefore, the influence of freeze-thaw must be taken into account for modeling of stress-strain behaviors in stability and deformation analyses for slopes, embankments and cuts in cold regions with soil layers experiencing freeze-thaw cycling. In this paper, freeze-thaw induced changes in the engineering properties of a silty soil, Lanzhou loess, were studied under different freezing conditions and with the dry unit weight from 15.3 to 17.3 kN/m(3). The soil samples were subjected to one freeze-thaw cycle. Then changes in dry unit weight, strength parameters, preconsolidation pressure as well as modulus were examined. The changes in mechanical properties along with both the freezing condition and the original dry unit weight, were discussed. It is found that under the same freezing condition, there is a critical dry unit weight, gamma(cr)(d), in terms of freeze-thaw for some of the engineering properties. When the original dry unit weight was at gamma(cr)(d) the soil density, the cohesion and preconsolidaiton pressure remained unchanged after freeze-thaw. When the original dry unit weight was larger than gamma(cr)(d) these three parameters decreased; with the original dry unit weight less than gamma(cr)(d), these parameters increased after freeze-thaw. However, the modulus always decreased after freeze-thaw. (c) 2007 Elsevier B. V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | VOLUME CHANGES ; PERMEABILITY ; CYCLES ; FROST ; CLAY |
| 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:000260040200014 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556060 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Qi, Jilin |
| 作者单位 | 1.Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 2.Xian Univ Technol, Inst Geotech Engn, Xian 710048, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Jilin,Ma, Wei,Song, Chunxia. Influence of freeze-thaw on engineering properties of a silty soil[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2008,53(3):397-404. |
| APA | Qi, Jilin,Ma, Wei,&Song, Chunxia.(2008).Influence of freeze-thaw on engineering properties of a silty soil.COLD REGIONS SCIENCE AND TECHNOLOGY,53(3),397-404. |
| MLA | Qi, Jilin,et al."Influence of freeze-thaw on engineering properties of a silty soil".COLD REGIONS SCIENCE AND TECHNOLOGY 53.3(2008):397-404. |
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来源：寒区旱区环境与工程研究所
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