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DOI	10.1080/19648189.2018.1541143
	Mechanical behaviour and constitutive model of tailing soils subjected to freeze-thaw cycles
	Liu, Youneng; Huang, Runqiu; Liu, Enlong; Hou, Feng
通讯作者	Liu, EL (通讯作者)，Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China.
发表日期	2021
ISSN	1964-8189
EISSN	2116-7214
起始页码	673
结束页码	695
卷号	25 期号:4
英文摘要	Tailings impoundment located in seasonally frozen soil areas suffers from freeze-thaw cycles (FTC), which has a great effect on the mechanical properties of tailing soils. To study the evolution of mechanical and deformational behaviours of tailing soils experienced FTC, a series of consolidated drained triaxial tests (CD) were performed on the samples experienced various numbers of FTC (N = 0, 1, 5 and 15), and the samples experienced CD tests under N = 0 were reconstituted and then subjected to CD tests again. Besides, the influence of FTC on microstructure and chemical components were also investigated by using of energy dispersive X-ray spectroscopy, powder X-ray diffraction and scanning electron microscopy analysis. The experimental results indicate that the cement failure and the expansion of mean pore size inside tailings are the dominant factors those exert an adverse impact on the mechanical and deformation properties. With the increasing N, the modulus and strength of tailing soils decrease, meanwhile, the trend of volume expansion decreases. In addition, based on the tested results and fractional calculus theory, a fractional order constitutive model was proposed, which provides satisfactory qualitative and quantitative modelling of many important features of tailing soils subjected to FTC.
英文关键词	Tailing soils; freeze-thaw cycles; mechanical behaviour; fractional; fractional order constitutive model; microstructure
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Geological
WOS记录号	WOS:000621229800005
来源期刊	EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254917
作者单位	[Liu, Youneng] Sichuan Univ, Inst Disaster Management & Reconstruct, Chengdu, Peoples R China; [Liu, Youneng; Huang, Runqiu] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm P, Chengdu, Peoples R China; [Liu, Enlong] Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China; [Liu, Enlong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China; [Hou, Feng] China Railway Siyuan Survey & Design Grp Co Ltd, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Youneng,Huang, Runqiu,Liu, Enlong,et al. Mechanical behaviour and constitutive model of tailing soils subjected to freeze-thaw cycles[J]. 中国科学院西北生态环境资源研究院,2021,25(4).
APA	Liu, Youneng,Huang, Runqiu,Liu, Enlong,&Hou, Feng.(2021).Mechanical behaviour and constitutive model of tailing soils subjected to freeze-thaw cycles.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,25(4).
MLA	Liu, Youneng,et al."Mechanical behaviour and constitutive model of tailing soils subjected to freeze-thaw cycles".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING 25.4(2021).