干旱区生态环境知识资源中心(Arid): Cover systems with synthetic water-repellent soils

Arid

DOI	10.1002/vzj2.20093
	Cover systems with synthetic water-repellent soils
	Zheng, Shuang; Xing, Xin; Lourenco, Sergio D. N.; Cleall, Peter J.
通讯作者	Lourenco, SDN (corresponding author), Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China.
来源期刊	VADOSE ZONE JOURNAL
EISSN	1539-1663
出版年	2021
卷号	20 期号:1
英文摘要	A cover system is a crucial component of engineered landfills, to minimize water percolation into the underlying waste. Capillary barriers are an alternative cover system, which has been widely used in the arid and semiarid regions as no cohesive, low-permeability materials are used. However, the performance of capillary barriers in tropical climate has been unsatisfactory (breakthrough observed). In recent years, synthetic water-repellent granular materials have drawn increasing attention due to their distinctive hydraulic behavior (inhibited water infiltration and high water entry pressure), suggesting they may also be used to improve the performance of cover systems. In this study, flume tests were conducted with inclined model slopes under artificial rainfall. By monitoring the surface runoff, lateral diversion, and basal percolation and conducting water balance analysis, the performance of monolithic cover, conventional capillary barrier, and water-repellent cover systems were evaluated. The study revealed that (a) the barrier effect and diversion capacity were significantly strengthened by induced water repellency, providing a promising solution to extend the application of capillary barrier covers; and (b) cover systems can be formed using one raw material to decrease the construction cost, by using synthetic water-repellent soil as the underlying layer.
类型	Article
语种	英语
开放获取类型	gold, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000620855500003
WOS类目	Environmental Sciences ; Soil Science ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369081
作者单位	[Zheng, Shuang] China Construct Fourth Engn Div Corp, Civil Engn Co, Shenzhen, Peoples R China; [Zheng, Shuang; Xing, Xin; Lourenco, Sergio D. N.] Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China; [Cleall, Peter J.] Cardiff Univ, Sch Engn, Cardiff, Wales
推荐引用方式 GB/T 7714	Zheng, Shuang,Xing, Xin,Lourenco, Sergio D. N.,et al. Cover systems with synthetic water-repellent soils[J],2021,20(1).
APA	Zheng, Shuang,Xing, Xin,Lourenco, Sergio D. N.,&Cleall, Peter J..(2021).Cover systems with synthetic water-repellent soils.VADOSE ZONE JOURNAL,20(1).
MLA	Zheng, Shuang,et al."Cover systems with synthetic water-repellent soils".VADOSE ZONE JOURNAL 20.1(2021).