干旱区生态环境知识资源中心(Arid): Enzymatic calcification to solidify desert sands for sandstorm control

Arid

DOI	10.1016/j.crm.2021.100323
	Enzymatic calcification to solidify desert sands for sandstorm control
	Sun, Xiaohao; Miao, Linchang; Wang, Hengxing; Wu, Linyu; Zhang, Jizhou
通讯作者	Miao, LC (corresponding author), Southeast Univ, Inst Geotech Engn, Nanjing 210096, Jiangsu, Peoples R China.
来源期刊	CLIMATE RISK MANAGEMENT
ISSN	2212-0963
出版年	2021
卷号	33
英文摘要	Sandstorms have been recognized as severe natural disasters worldwide and are increasingly occurring due to land desertification. In this study, an effective and environmentally friendly method (enzymatically induced calcite precipitation-polyvinyl acetate, EICP-PVAc) was proposed for sandstorm control. The technique was applied in a large-scale desert sand solidification experiment (50000 m(2)) to study the wind-erosion resistance of the technology in the Tengri desert. Due to the straw checkerboard barrier zone and the sand control belt with low barriers zone are easily buried by shifting sands. These engineering methods cannot be reset based on actual field status; so, they easily loss the function of sand proof. The EICP-PVAc method proposed for shifting sand solidification can adapt to the change of different terrain conditions and is suitable for shifting sands with changeable wind direction. After treatment, the straw checkerboard barriers zone and the sand control belt with low barriers zone had larger surface strengths, thicker cemented crust layers and larger CaCO3 contents. The surface strength increased exponentially with increasing thickness of crust layer. In addition, the network structure of PVAc not only increased the ability of solidifying sand stabilization to resist rain erosion, but also enhanced the intensity of sand stabilization. Therefore, the treatment ensured a long-term rainfall-erosion resistance. Moreover, the wind-erosion resistance of the treated area was significantly improved, and the desert sands in this area were not blown by wind in 60 days. The results demonstrated that EICP-PVAc treatment significantly controlled sandstorm, which presents promising potential for anti-desertification.
英文关键词	Sandstorm control Enzymatically induced calcite precipitation Polyvinyl acetate Wind-erosion Rainfall-erosion
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000689657300007
WOS关键词	ASIAN DUST ; CARBONATE ; BIOCEMENTATION
WOS类目	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362878
作者单位	[Sun, Xiaohao; Miao, Linchang; Wang, Hengxing; Wu, Linyu] Southeast Univ, Inst Geotech Engn, Nanjing 210096, Jiangsu, Peoples R China; [Zhang, Jizhou] China Design Grp Co LDT, Nanjing 210014, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiaohao,Miao, Linchang,Wang, Hengxing,et al. Enzymatic calcification to solidify desert sands for sandstorm control[J],2021,33.
APA	Sun, Xiaohao,Miao, Linchang,Wang, Hengxing,Wu, Linyu,&Zhang, Jizhou.(2021).Enzymatic calcification to solidify desert sands for sandstorm control.CLIMATE RISK MANAGEMENT,33.
MLA	Sun, Xiaohao,et al."Enzymatic calcification to solidify desert sands for sandstorm control".CLIMATE RISK MANAGEMENT 33(2021).