Quantification and division of unfrozen water content of frozen soils during freezing and the influence of freeze-thaw cycles
文献类型：期刊论文
| 作者 | An, Ran1,4; Gao, Haodong1,2; Chen, Chang3; Zhang, Xianwei1 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 83期号:11页码:14 |
| 关键词 | Saturated clay Freeze-thaw cycle Unfrozen water content Damage analysis |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-024-03954-w |
| 英文摘要 | The unfrozen water content is crucial to soil's physical and mechanical properties. Soils on the Qinghai-Tibet Plateau are frequently subjected to freeze-thaw (F-T) cycles. The quantitative relationship between F-T effects and the unfrozen water content of soils requires further investigation. This study employs a nuclear magnetic resonance (NMR) scanner with a temperature-control module to measure the unfrozen water content of silty clay during multiple F-T cycles. The soil freezing characteristic curves (SFCC) of silty clay are derived from the T2 (transverse relaxation time) distribution curves based on NMR measurements. Two distinct T2 cutoff values are used to classify three types of water in soils: bound water, capillary water, and bulk water. The impact of F-T cycles on the evolution of unfrozen water content as temperatures decrease has been analyzed. The testing results indicate that the SFCC of silty clay can be segmented into three stages: super-cooling, fast-declining, and stable. As the number of F-T cycles increases, capillary water content decreases while bulk water content increases during the super-cooling stage. The damage coefficient, derived from pore volume measurements, increases sharply during the first four F-T cycles before stabilizing gradually. Additionally, there is a negative linear correlation between the damage coefficient and the initial capillary water content, and a positive linear correlation with the initial bulk water content. This study offers valuable insights for the quantitative analysis of unfrozen water content in seasonally frozen regions and serves as an essential guide for geotechnical construction projects in cold areas. |
| 资助项目 | National Natural Science Foundation of China[42177148] ; National Natural Science Foundation of China[12102312] ; National Natural Science Foundation of China[41972285] ; National Natural Science Foundation of China[2024GH-YBXM-O5] ; Key Research and Development Program of Shaanxi |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001334333600002 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42830]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Xianwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Xiaohongshan,Wuchang, Wuhan 430071, Peoples R China 2.Wuhan Univ, Sch Water Resources & Hydropower Engn, Wuhan 430072, Peoples R China 3.Wuhan Univ Sci & Technol, Coll Urban Construct, Wuhan 430065, Peoples R China 4.Hefei Univ Technol, Sch Civil & Hydraul Engn, Hefei 230009, Peoples R China |
| 推荐引用方式 GB/T 7714 | An, Ran,Gao, Haodong,Chen, Chang,et al. Quantification and division of unfrozen water content of frozen soils during freezing and the influence of freeze-thaw cycles[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2024,83(11):14. |
| APA | An, Ran,Gao, Haodong,Chen, Chang,&Zhang, Xianwei.(2024).Quantification and division of unfrozen water content of frozen soils during freezing and the influence of freeze-thaw cycles.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,83(11),14. |
| MLA | An, Ran,et al."Quantification and division of unfrozen water content of frozen soils during freezing and the influence of freeze-thaw cycles".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 83.11(2024):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。