| CT scanning of internal crack mechanism and strength behavior of cement-fiber-tailings matrix composites | |
Cao, Shuai1,2,3; Yilmaz, Erol4; Yin, Zhenyu3; Xue, Gaili1,2; Song, Weidong1,2; Sun LJ(孙立娟)5
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| Corresponding Author | Cao, Shuai([email protected]) ; Yilmaz, Erol([email protected]) ; Yin, Zhenyu([email protected]) |
| Source Publication | CEMENT & CONCRETE COMPOSITES
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| 2021-02-01 | |
| Volume | 116Pages:14 |
| ISSN | 0958-9465 |
| Abstract | This paper deals the relationship between compressive strength and internal crack formation (e.g., crack width and volume) of cement-fiber-tailings matrix composites (CFTMC) using an industrial computed tomography system and scanning electron microscopy. Two types of fibers (polypropylene PP and polyacrylonitrile PAN) were used to manufacture CFTMC with a constant cement-to-tailings ratio, solid content and curing time of 1:6, 75 wt% and 14 days, respectively. The results showed that strength gaining of CFTMC increased remarkably with fiber additions which effectively improve its toughness. When compared to samples without fibers, the compressive strength of CFTMC was the highest because of the reduced interconnection between pores and high particle packing density. The internal structure analysis showed that the maximum crack widths of CFTMC increased when the fiber content increased from 0.3 to 0.6 wt%, regardless of fiber type, growing the crack volumes of samples. The failure pattern of all CFTMC samples was mainly tensile, shear and mixed failure (tensile/shear), and a high strength value accompanies with a big volume of crack. At last, the findings of this study may offer a key reference for fiber-reinforced backfills, which can lift their strength, stability and integrity behavior under extreme conditions, such as rock burst, squeezing ground, blast or seismic event. |
| Keyword | Cement-fiber-tailings matrix composites Polypropylene-polyacrylonitrile fibers Industrial computed tomography Compressive strength Microstructural properties 3D model reconstruction |
| DOI | 10.1016/j.cemconcomp.2020.103865 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000608491400003 |
| WOS Keyword | MICROSTRUCTURAL PROPERTIES ; COMPRESSIVE STRENGTH ; COMPUTED-TOMOGRAPHY ; REINFORCED CONCRETE ; ULTRASONIC PROPERTIES ; SIZE DISTRIBUTION ; PASTE ; BACKFILL ; MINE ; TEMPERATURE |
| WOS Research Area | Construction & Building Technology ; Materials Science |
| WOS Subject | Construction & Building Technology ; Materials Science, Composites |
| Funding Project | National Natural Science Foundation of China[51804017] ; Opening Fund of State Key Laboratory of Nonlinear Mechanics[LNM202009] ; Fundamental Research Funds for Central Universities[FRF-TP-20-001A2] |
| Funding Organization | National Natural Science Foundation of China ; Opening Fund of State Key Laboratory of Nonlinear Mechanics ; Fundamental Research Funds for Central Universities |
| Classification | 一类 |
| Ranking | 5+ |
| Contributor | Cao, Shuai ; Yilmaz, Erol ; Yin, Zhenyu |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85999 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Univ Sci & Technol Beijing, Minist Educ, State Key Lab High Efficient Min & Safety Met Min, Beijing 100083, Peoples R China; 2.Univ Sci & Technol Beijing, Sch Civil & Resources Engn, Beijing 100083, Peoples R China; 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China; 4.Recep Tayyip Erdogan Univ, Dept Civil Engn, Geotech Div, TR-53100 Rize, Turkey; 5.Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Cao, Shuai,Yilmaz, Erol,Yin, Zhenyu,et al. CT scanning of internal crack mechanism and strength behavior of cement-fiber-tailings matrix composites[J]. CEMENT & CONCRETE COMPOSITES,2021,116:14.Rp_Au:Cao, Shuai, Yilmaz, Erol, Yin, Zhenyu |
| APA | Cao, Shuai,Yilmaz, Erol,Yin, Zhenyu,Xue, Gaili,Song, Weidong,&孙立娟.(2021).CT scanning of internal crack mechanism and strength behavior of cement-fiber-tailings matrix composites.CEMENT & CONCRETE COMPOSITES,116,14. |
| MLA | Cao, Shuai,et al."CT scanning of internal crack mechanism and strength behavior of cement-fiber-tailings matrix composites".CEMENT & CONCRETE COMPOSITES 116(2021):14. |
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| Jp2021108.pdf（12187KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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