干旱区生态环境知识资源中心(Arid): Use of X-ray computed tomography for studying the desiccation cracking and self-healing of fine soil during drying-wetting paths

Arid

DOI	10.1016/j.enggeo.2021.106255
	Use of X-ray computed tomography for studying the desiccation cracking and self-healing of fine soil during drying-wetting paths
	Zaidi, Mohammed; Ahfir, Nasre-Dine; Alem, Abdellah; Taibi, Said; El Mansouri, Bouabid; Zhang, Yongxiang; Wang, Huaqing
通讯作者	Ahfir, ND (corresponding author), Normandie Univ, LOMC, UNIHAVRE, UMR 6294,CNRS, F-76600 Le Havre, France.
来源期刊	ENGINEERING GEOLOGY
ISSN	0013-7952
EISSN	1872-6917
出版年	2021
卷号	292
英文摘要	Managed aquifer recharge is an efficient approach using surface water for groundwater recharge. However, soil clogging in the infiltration systems represents a critical problem that reduces the efficiency of recharge systems. In recent years, much research has been conducted to investigate clogging in subsurface and surface soil (cake). Cake prevents infiltration into the water table and can drastically reduce the recharge rate. In arid and semi-arid areas, alternation of humid and dry seasons has an effect on cake cracking. In the present research, the propagation of desiccation cracking and self-healing of unconsolidated soil (cake), placed in Plexiglas columns, was investigated using X-ray computed tomography (CT) during drying-wetting (D-W) paths. The results showed that during the drying path, cracks initiated at the base of the soil by friction with the bottom of the column and then propagated to the top surface of the cake. As the drying time increased, evaporation at the top surface led to more cracks growing from the surface than from the bottom of the cake. However, the cracks at the bottom tended to stabilize because the water content was greater than at the top surface. The initiation, propagation, and expansion of the cracks developed in the saturated condition of the cake. During the wetting path, some cracks were closed while others appeared. The cracks tended to close progressively with wetting time, highlighting the self-healing phenomenon, probably due to the high plasticity index of cake soil. The results showed that cake swelling is mainly related to an increase of the void ratio due to a decrease in suction between particles. The results demonstrate the capacity of the X-ray CT technique to investigate the evolution of cracks during D-W paths.
英文关键词	Soil cracking Desiccation Self-healing Drying-wetting paths Suction X-ray computed tomography
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000692696200015
WOS关键词	2 PADDY SOILS ; HYDRAULIC CONDUCTIVITY ; SHRINKAGE BEHAVIOR ; VAPOR EQUILIBRIUM ; WATER-RETENTION ; CLAYEY SOILS ; QUANTIFICATION ; SUCTION ; INFILTRATION ; HYSTERESIS
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS研究方向	Engineering ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363088
作者单位	[Zaidi, Mohammed; Ahfir, Nasre-Dine; Alem, Abdellah; Taibi, Said; Wang, Huaqing] Normandie Univ, LOMC, UNIHAVRE, UMR 6294,CNRS, F-76600 Le Havre, France; [Zaidi, Mohammed; El Mansouri, Bouabid] Ibn Tofail Univ, Fac Sci, Hydroinformat Sect, Lab Geosci Nat Resources, Maamora Campus,BP 133, Kenitra 14000, Morocco; [Zhang, Yongxiang; Wang, Huaqing] Beijing Univ Technol, Coll Architecture & Civil Engn, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100124, Peoples R China
推荐引用方式 GB/T 7714	Zaidi, Mohammed,Ahfir, Nasre-Dine,Alem, Abdellah,et al. Use of X-ray computed tomography for studying the desiccation cracking and self-healing of fine soil during drying-wetting paths[J],2021,292.
APA	Zaidi, Mohammed.,Ahfir, Nasre-Dine.,Alem, Abdellah.,Taibi, Said.,El Mansouri, Bouabid.,...&Wang, Huaqing.(2021).Use of X-ray computed tomography for studying the desiccation cracking and self-healing of fine soil during drying-wetting paths.ENGINEERING GEOLOGY,292.
MLA	Zaidi, Mohammed,et al."Use of X-ray computed tomography for studying the desiccation cracking and self-healing of fine soil during drying-wetting paths".ENGINEERING GEOLOGY 292(2021).