干旱区生态环境知识资源中心(Arid): Resilient modulus experiment of subgrade soil on different wetting-drying and salt washing-supplying paths

Arid

DOI	10.1016/j.trgeo.2021.100512
	Resilient modulus experiment of subgrade soil on different wetting-drying and salt washing-supplying paths
	Niu, Xirong; Yao, Yangping
通讯作者	Niu, XR (corresponding author), Shanxi Univ, Dept Civil Engn, Taiyuan 030013, Peoples R China.
来源期刊	TRANSPORTATION GEOTECHNICS
ISSN	2214-3912
出版年	2021
卷号	28
英文摘要	Climate change and human action significantly impact the state of soil, particularly saline and loess soils in China's arid and semi-arid regions. Infrastructure is continuously built on these problematic soil areas, making it crucial to study the impact of external factors on the engineering properties of subgrade soil. This paper proposes a test device by which a few physical conditions (salt content and temperature) can be controlled and the mechanics parameters (deformation and resilient modulus) of soil samples can be dynamically investigated. Using the proposed device, the resilient moduli of the samples collected from an in-situ highway project on different wetting -> drying and salt washing -> supplying paths were measured and analyzed. The results indicate that, for the same final moisture content, the modulus value of a soil sample subjected to the drying -> wetting path is larger than that of a soil sample subjected to the wetting -> drying path. Further, the resilient modulus of soil samples is weakened after multiple wetting-drying cycles, while the stiffness of soil samples obtained from high soluble salt content is lower than that of soil samples with the same initial soluble salt content. Finally, the proposed device is simple and convenient to use and provides a reliable method for exploring the mechanism of mechanical behavior degradation of saline and loess soils and the subgrade settlement in problematical soil areas.
英文关键词	Resilient modulus Simulation experiment Salt washing-supplying Mechanical behavior degradation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000642461300003
WOS关键词	SHEAR-STRENGTH DEGRADATION ; CYCLES
WOS类目	Engineering, Civil ; Engineering, Geological
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351904
作者单位	[Niu, Xirong] Shanxi Univ, Dept Civil Engn, Taiyuan 030013, Peoples R China; [Niu, Xirong; Yao, Yangping] Beihang Univ, Sch Transportat Sci & Engn, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Niu, Xirong,Yao, Yangping. Resilient modulus experiment of subgrade soil on different wetting-drying and salt washing-supplying paths[J],2021,28.
APA	Niu, Xirong,&Yao, Yangping.(2021).Resilient modulus experiment of subgrade soil on different wetting-drying and salt washing-supplying paths.TRANSPORTATION GEOTECHNICS,28.
MLA	Niu, Xirong,et al."Resilient modulus experiment of subgrade soil on different wetting-drying and salt washing-supplying paths".TRANSPORTATION GEOTECHNICS 28(2021).