Reinforcement effect of polypropylene fiber on dynamic properties of cemented tailings backfill under SHPB impact loading

doi:10.1016/j.conbuildmat.2021.122417

IMECH-IR > 非线性力学国家重点实验室

	Reinforcement effect of polypropylene fiber on dynamic properties of cemented tailings backfill under SHPB impact loading
	Xue Gaili 1,2; Yilmaz Erol 3; Feng Guorui 1,2; Cao Shuai 4; Sun LJ(孙立娟)5
通讯作者	Xue, Gaili(hnpyxgl@126.com)
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
	2021-04-12
卷号	279 页码:11
ISSN	0950-0618
摘要	Dynamic loads such as blasting may lead to diverse levels of failure in cemented tailings backfill (CTB) under diverse strain rates and frequency spectral amplitudes. Hence, changes in dynamic properties of filling due to these loads should be studied as a function of strain rates for CTB mixtures. In this study, the dynamic characteristics of CTB samples containing polypropylene fiber contents were examined with the use of split Hopkinson pressure bar (SHPB) system and high speed photography technology. The experimental results illustrate that the backfill has a damping influence on the elastic wave. The original waveform noise of CTB with fiber is higher than the one without fiber, and the average strain rate changes the reflected waveform. The effect is greater than the impact velocity. Secondly, the dynamic strength of CTB with fiber is higher than the static strength, which obeys a great effect of the strain rate. Meanwhile, the backfill (with fiber) stress-strain characteristics show a 'double peak' phenomenon, and the difference between the first and the second peak stresses decreases with increasing fiber content. The failure mode analysis demonstrated that the fiber reinforcement stopped the development of big cracks during the tensile fiber pull-out failure regime. Lastly, the findings of the present study can offer an important reference to the overall design of backfilling regarding the understanding of the good dynamic characteristics and the reduction of operational costs. (C) 2021 Elsevier Ltd. All rights reserved.
关键词	Cemented tailings backfill Fiber reinforcement Waveform properties Dynamic strength Failure mode
DOI	10.1016/j.conbuildmat.2021.122417
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000634547400013
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
资助项目	National Natural Science Foundation of China[51804017] ; Opening fund of State Key Laboratory of Nonlinear Mechanics[LNM202009] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-001A2]
项目资助者	National Natural Science Foundation of China ; Opening fund of State Key Laboratory of Nonlinear Mechanics ; Fundamental Research Funds for the Central Universities
论文分区	一类
力学所作者排名	3+
RpAuthor	Xue, Gaili
引用统计	被引频次：62[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86414
专题	非线性力学国家重点实验室
作者单位	1.Taiyuan Univ Technol, Coll Min Technol, Taiyuan 030024, Peoples R China; 2.Res Ctr Green Min Engn Technol Shanxi Prov, Taiyuan 030024, Peoples R China; 3.Recep Tayyip Erdogan Univ, Dept Civil Engn, Geotech Div, TR-53100 Rize, Turkey; 4.Univ Sci & Technol Beijing, Sch Civil & Resources Engn, Beijing 100083, Peoples R China; 5.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xue Gaili,Yilmaz Erol,Feng Guorui,et al. Reinforcement effect of polypropylene fiber on dynamic properties of cemented tailings backfill under SHPB impact loading[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,279:11.
APA	Xue Gaili,Yilmaz Erol,Feng Guorui,Cao Shuai,&孙立娟.(2021).Reinforcement effect of polypropylene fiber on dynamic properties of cemented tailings backfill under SHPB impact loading.CONSTRUCTION AND BUILDING MATERIALS,279,11.
MLA	Xue Gaili,et al."Reinforcement effect of polypropylene fiber on dynamic properties of cemented tailings backfill under SHPB impact loading".CONSTRUCTION AND BUILDING MATERIALS 279(2021):11.

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