干旱区生态环境知识资源中心(Arid): Improving the impermeability and mechanical properties of the Yellow River sediment with polymer gels

Arid

DOI	10.1016/j.cscm.2024.e03246
	Improving the impermeability and mechanical properties of the Yellow River sediment with polymer gels
	Wu, Yuhang; Wan, Yong; He, Xingxing; Cai, Yangyang; Xu, Wennian; Zhao, Bingqin; Shen, Yuanyang
通讯作者	He, XX
来源期刊	CASE STUDIES IN CONSTRUCTION MATERIALS
ISSN	2214-5095
出版年	2024
卷号	20
英文摘要	Natural clay is the most common material used for the veneer cover soil in solid waste landfill because of its good impermeability and mechanical stability. However, it is often difficult to obtain in the arid regions of northern China and an alternative material is urgently needed. This study utilized polyanionic cellulose (PAC) to modify the dredged sediment from the Yellow River (DSYR) to replace the clay used as the veneer cover soil in solid waste landfills. Some engineering properties of PAC-modified dredged sediment (PMDS), including compaction, permeability, shear strength, and drying shrinkage, were investigated by considering the factors of PAC dosage and compaction degree (CD). Microscopic tests were conducted to analyze the improvement mechanism of DSYR engineering properties by PAC modification. The results indicated that the hydraulic conductivity of PMDS decreased obviously with the PAC dosage or compaction degree. The addition of PAC significantly improved the shear strength of DSYR, along with an increase in cohesion but a decrease in the internal friction angle. During drying, there was no apparent horizontal displacement for PMDS, and the vertical displacement was less than 0.17 mm. Microscopic tests revealed that the dosage of PAC and compaction degree mainly affected the contact and pore distribution characteristics between soil particles, thereby changing the impermeability and mechanical properties of DSYR.
英文关键词	Polyanionic cellulose Dredged sediment Hydraulic conductivity Shear strength Microstructure
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001285807800001
WOS关键词	XANTHAN GUM BIOPOLYMER ; POLYANIONIC CELLULOSE ; DRILLING-FLUIDS ; COMPACTED CLAY ; SOIL
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/2XILL650/403109
推荐引用方式 GB/T 7714	Wu, Yuhang,Wan, Yong,He, Xingxing,et al. Improving the impermeability and mechanical properties of the Yellow River sediment with polymer gels[J],2024,20.
APA	Wu, Yuhang.,Wan, Yong.,He, Xingxing.,Cai, Yangyang.,Xu, Wennian.,...&Shen, Yuanyang.(2024).Improving the impermeability and mechanical properties of the Yellow River sediment with polymer gels.CASE STUDIES IN CONSTRUCTION MATERIALS,20.
MLA	Wu, Yuhang,et al."Improving the impermeability and mechanical properties of the Yellow River sediment with polymer gels".CASE STUDIES IN CONSTRUCTION MATERIALS 20(2024).