Freeze-thaw cycling impact on the shear behavior of frozen soil-concrete interface | |
He, Pengfei1,2,5; Mu, Yanhu2; Yang (Joey), Zhaohui3; Ma, Wei2,5; Dong, Jianhua4; Huang, Yongting2,5 | |
2020-05 | |
发表期刊 | Cold Regions Science and Technology |
ISSN | 0165232X |
卷号 | 173期号:103024 |
摘要 | The shear behavior of a frozen soil-structure interface plays a vital role in analyzing the performance of engineered structures in cold regions. This study investigates the freeze-thaw cycling impact on the shear behavior of a frozen soil-concrete interface by direct shear tests. Test specimens consisting of a Portland cement concrete disk and frozen loess with an initial moisture content ranging between 9.2% and 20.8% were prepared and conditioned at various sub-zero temperatures (i.e., −1 °C, −3 °C, and − 5 °C) and freeze-thaw (F-T) cycles (i.e., 0, 5, 10, and 20). Experimental results, including shear stress - horizontal displacement curves, the displacements and shear strengths at both peak and residual status, are presented and analyzed. In particular, the influence of F-T cycling on shear behavior is examined. The peak displacement is found to increase linearly with increasing initial moisture content, but their correlation weakens as the number of F-T cycling increases. However, the residual displacement is found to be insensitive to the initial moisture content, temperature, normal stress, and F-T cycling. While the residual friction angle is slightly larger than the peak one before F-T cycling, both gradually increase with an increasing number of F-T cycling. Large cohesion in the peak strength, especially at lower temperatures, completely diminishes in the residual strength due to damage of ice bondage, resulting in a significant shear strength loss between the peak and residual status. The impact of F-T cycling on the interface shear behavior can be attributed to moisture migration toward, formation and accumulation of ice films at the interface. The findings from this study including the shear strength parameters and the displacements at both peak and residual status, can be used to simulate the performance of engineered geotechnical assets such as pile foundations, retaining walls, and earth dams or irrigation channels with concrete linings in cold regions. © 2020 Elsevier B.V. |
关键词 | Concrete testing Freezing Frozen soils Moisture Moisture determination Piles Portland cement Shear strength Shear stress Soil structure interactions Thawing Direct shear test Freeze-thaw Residual displacement Shear strength parameters Soil-concrete interfaces |
DOI | 10.1016/j.coldregions.2020.103024 |
收录类别 | SCIE ; EI ; SCOPUS |
语种 | 英语 |
WOS研究方向 | Engineering ; Geology |
WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000535674500017 |
出版者 | Elsevier B.V., Netherlands |
EI入藏号 | 20201108305385 |
EI主题词 | Concretes |
EI分类号 | 408.2 Structural Members and Shapes - 412 Concrete - 412.1 Cement - 483.1 Soils and Soil Mechanics - 483.2 Foundations - 944.2 Moisture Measurements |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/110705 |
专题 | 理学院 土木工程学院 |
通讯作者 | Yang (Joey), Zhaohui |
作者单位 | 1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; 3.Univ Alaska Anchorage, Coll Engn, Anchorage, AK 99508 USA; 4.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
第一作者单位 | 理学院 |
第一作者的第一单位 | 理学院 |
推荐引用方式 GB/T 7714 | He, Pengfei,Mu, Yanhu,Yang ,et al. Freeze-thaw cycling impact on the shear behavior of frozen soil-concrete interface[J]. Cold Regions Science and Technology,2020,173(103024). |
APA | He, Pengfei,Mu, Yanhu,Yang ,Ma, Wei,Dong, Jianhua,&Huang, Yongting.(2020).Freeze-thaw cycling impact on the shear behavior of frozen soil-concrete interface.Cold Regions Science and Technology,173(103024). |
MLA | He, Pengfei,et al."Freeze-thaw cycling impact on the shear behavior of frozen soil-concrete interface".Cold Regions Science and Technology 173.103024(2020). |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
SCI1.pdf(2395KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
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。
修改评论