Reinforcement effect of polypropylene fiber on dynamic properties of cemented tailings backfill under SHPB impact loading
文献类型：期刊论文
| 作者 | Xue Gaili4,5; Yilmaz Erol3; Feng Guorui4,5; Cao Shuai2; Sun LJ(孙立娟)1
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| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2021-04-12 |
| 卷号 | 279页码:11 |
| 关键词 | Cemented tailings backfill Fiber reinforcement Waveform properties Dynamic strength Failure mode |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2021.122417 |
| 通讯作者 | Xue, Gaili(hnpyxgl@126.com) |
| 英文摘要 | 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. |
| 分类号 | 一类 |
| 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] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000634547400013 |
| 资助机构 | National Natural Science Foundation of China ; Opening fund of State Key Laboratory of Nonlinear Mechanics ; Fundamental Research Funds for the Central Universities |
| 其他责任者 | Xue, Gaili |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86413]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, Sch Civil & Resources Engn, Beijing 100083, Peoples R China; 3.Recep Tayyip Erdogan Univ, Dept Civil Engn, Geotech Div, TR-53100 Rize, Turkey; 4.Res Ctr Green Min Engn Technol Shanxi Prov, Taiyuan 030024, Peoples R China; 5.Taiyuan Univ Technol, Coll Min Technol, Taiyuan 030024, 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. |
入库方式： OAI收割
来源：力学研究所
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