Characterizing compressive strength of compacted saline loess subjected to freeze-thaw cycling with wave velocity
文献类型：期刊论文
| 作者 | Liu, Xin3; Wei, Xiao2; Qin, Hui1 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 81期号:4页码:- |
| 关键词 | Loess Salt Freeze-thaw cycling UCS Wave velocity |
| ISSN号 | 1435-9529 |
| 英文摘要 | Loess in northwest regions of the Chinese Loess Plateau contains a high level of soluble salt, and it is exposed to periodic freezing and thawing in winter. The coupled influence of salt content and freeze-thaw cycling in altering the strength of loess is a matter of concern, yet remains poorly understood. This paper presents an experimental investigation into the problem using the elastic wave method, in which the unconfined compressive strength (UCS) of the compacted saline loess (salt concentration is 0, 0.5, and 1 mol/L) subjected to the freeze-thaw cycling (0, 1, and 5 cycles) was evaluated by the wave velocities. At a similar void ratio and water content, the UCS of the loess samples decreases with either the add-in of salts or the number of the freeze-thaw cycles. Of a particular interest is that the reduction of the UCS is prominent (maximum reduction of 37%) for the saline loess after the first cycle of freezing and thawing. By performing the bender element tests, it was found that the wave velocities decrease with the salt content, and the impact of the freeze-thaw cycling on the P wave velocity is more pronounced than on the S wave velocity. A fairly good correlation between the elastic wave velocities and the UCS values of saline loess has been established, providing a promising approach to evaluate the soil strength in the field conditions. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000777402500002 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35144]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China 2.Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, China 3.College of Geological Engineering and Geomatics, Chang’an University, Xi’an, China |
| 推荐引用方式 GB/T 7714 | Liu, Xin,Wei, Xiao,Qin, Hui. Characterizing compressive strength of compacted saline loess subjected to freeze-thaw cycling with wave velocity[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2022,81(4):-. |
| APA | Liu, Xin,Wei, Xiao,&Qin, Hui.(2022).Characterizing compressive strength of compacted saline loess subjected to freeze-thaw cycling with wave velocity.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,81(4),-. |
| MLA | Liu, Xin,et al."Characterizing compressive strength of compacted saline loess subjected to freeze-thaw cycling with wave velocity".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 81.4(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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