干旱区生态环境知识资源中心(Arid): Preventing the secondary salt deterioration in the repaired area of basal erosion of earthen sites based on capillary barrier effect

Arid

DOI	10.1016/j.conbuildmat.2022.130168
	Preventing the secondary salt deterioration in the repaired area of basal erosion of earthen sites based on capillary barrier effect
	Chen, Wenwu; Jia, Bobo; Shan, Xiaokang; Qin, Yilun; Yang, Lei
通讯作者	Chen, WW
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2023
卷号	366
英文摘要	Basal erosion is one of the most typical salt deteriorations of earthen sites in arid and semi-arid areas. Its formation is mainly related to the water and salt migration and enrichment at the bottom of earthen sites walls, and can cause collapse of site walls. Rammed roof-propping reinforcement is the main repair technology for the basal erosion of the earthen sites, but there is a risk of secondary salt deterioration in the repaired area due to the subsequent water and salt migration. Based on the capillary barrier theory, this study regulates the particle size composition of repair soil to explore repair materials that can effectively mitigate the secondary salt deterioration. Firstly, Arya-Paris model and Fredlund-Xing's model were used to convert the particle size distribution curves (PSDC) of soil with different particle composition into soil-water characteristic curves (SWCC), to preliminarily judge the capillary barrier potential of different soil structures. Then carry out water-salt migration test and mercury intrusion porosimetry test to verify the predictions. The research shows that when repair soil is coarser than earthen site soil, it can form an effective capillary barrier to block the capillary rise of water and salt, thus reducing the secondary salt deterioration in the repaired area. When repair soil is finer than earthen site soil, it will promote the capillary rise of water and salt, thus aggravating the salt deterioration in the repaired area. It is proposed to use the repair material of adding 20% sand on the basis of the original earthen site soil particle composition for the rammed roof-propping reinforcement of the earthen sites.
英文关键词	Earthen site Basal erosion Capillary barrier Soil column Particle size distribution
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000913350000001
WOS关键词	PARTICLE-SIZE DISTRIBUTION ; RAMMED EARTH ; CONSOLIDATION ; BEHAVIOR ; DAMAGE
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395821
推荐引用方式 GB/T 7714	Chen, Wenwu,Jia, Bobo,Shan, Xiaokang,et al. Preventing the secondary salt deterioration in the repaired area of basal erosion of earthen sites based on capillary barrier effect[J],2023,366.
APA	Chen, Wenwu,Jia, Bobo,Shan, Xiaokang,Qin, Yilun,&Yang, Lei.(2023).Preventing the secondary salt deterioration in the repaired area of basal erosion of earthen sites based on capillary barrier effect.CONSTRUCTION AND BUILDING MATERIALS,366.
MLA	Chen, Wenwu,et al."Preventing the secondary salt deterioration in the repaired area of basal erosion of earthen sites based on capillary barrier effect".CONSTRUCTION AND BUILDING MATERIALS 366(2023).