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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
ISSN0165232X
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
DOI10.1016/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
被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
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).
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