Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber
Synthetic fibers are adopted to mix with conventional steel fibers (SF) for ultra-high performance concrete (UHPC) to improve chemical resistance and reduce self-weight. Polyoxymethylene fiber (POMF), as a type of lightweight, high-strength, corrosion-resistant synthetic fiber, is expected to replac...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422013722 |
| _version_ | 1811180701576331264 |
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| author | Jia-Xiang Lin Jia-Ying Su Hong-Shu Pan Yu-Qi Peng Yong-Chang Guo Wei-Shan Chen Xiao-Long Sun Bing-Xiang Yuan Guo-Tao Liu Xue-Wei Lan |
| author_facet | Jia-Xiang Lin Jia-Ying Su Hong-Shu Pan Yu-Qi Peng Yong-Chang Guo Wei-Shan Chen Xiao-Long Sun Bing-Xiang Yuan Guo-Tao Liu Xue-Wei Lan |
| author_sort | Jia-Xiang Lin |
| collection | DOAJ |
| description | Synthetic fibers are adopted to mix with conventional steel fibers (SF) for ultra-high performance concrete (UHPC) to improve chemical resistance and reduce self-weight. Polyoxymethylene fiber (POMF), as a type of lightweight, high-strength, corrosion-resistant synthetic fiber, is expected to replace SF generally used in UHPC. Due to the obvious difference of mechanical properties between POMF and SF, different POMF/SF hybrid ratios may affect the dynamic compression behavior of UHPC. To investigate the dynamic mechanical behavior of hybrid POMF/SF reinforced UHPC (HUHPC), axial compression and split Hopkinson pressure bar (SHPB) tests with strain rate from 40 to 170 s−1 of HUHPC were conducted. The fiber volume fraction was fixed at 3% and four different POMF/SF hybrid ratios (0:3, 1:2, 2:1, 3:0) were adopted. The effects of hybrid POMF/SF ratios on the dynamic compressive properties of HUHPC, including dynamic compressive strength, dynamic elastic modulus, dynamic increase factor (DIF), and impact toughness were discussed. The results show that HUHPC exhibits obvious strain rate sensitivity under impact loading. With the increase of strain rate, the dynamic compressive strength, dynamic elastic modulus, DIF and impact toughness of HUHPC increased. Based on the linear assumption of fiber volume fraction and dynamic compressive strength enhancement of UHPC, the calculated dynamic compressive strength of HUHPC is lower than the experimental values. As the strain rate increases, the propagation path of microcrack transforms from interface of fiber-matrix to penetrating the fiber, resulting in plastic deformation of SF and fracture of POMF, consuming a large amount of impact energy and improving the impact toughness resistance of HUHPC. |
| first_indexed | 2024-04-11T09:07:44Z |
| format | Article |
| id | doaj.art-ec36f260fee34d66b4d3438c72b55282 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T09:07:44Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-ec36f260fee34d66b4d3438c72b552822022-12-22T04:32:36ZengElsevierJournal of Materials Research and Technology2238-78542022-09-012044734486Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiberJia-Xiang Lin0Jia-Ying Su1Hong-Shu Pan2Yu-Qi Peng3Yong-Chang Guo4Wei-Shan Chen5Xiao-Long Sun6Bing-Xiang Yuan7Guo-Tao Liu8Xue-Wei Lan9School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, China; Corresponding author.School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaGuangdong GW Metal Industry Group Co., Ltd., Guangzhou, ChinaGuangzhou Zengcheng Zhengyuan Construction Engineering Testing Center Co., Ltd., Guangzhou, ChinaSynthetic fibers are adopted to mix with conventional steel fibers (SF) for ultra-high performance concrete (UHPC) to improve chemical resistance and reduce self-weight. Polyoxymethylene fiber (POMF), as a type of lightweight, high-strength, corrosion-resistant synthetic fiber, is expected to replace SF generally used in UHPC. Due to the obvious difference of mechanical properties between POMF and SF, different POMF/SF hybrid ratios may affect the dynamic compression behavior of UHPC. To investigate the dynamic mechanical behavior of hybrid POMF/SF reinforced UHPC (HUHPC), axial compression and split Hopkinson pressure bar (SHPB) tests with strain rate from 40 to 170 s−1 of HUHPC were conducted. The fiber volume fraction was fixed at 3% and four different POMF/SF hybrid ratios (0:3, 1:2, 2:1, 3:0) were adopted. The effects of hybrid POMF/SF ratios on the dynamic compressive properties of HUHPC, including dynamic compressive strength, dynamic elastic modulus, dynamic increase factor (DIF), and impact toughness were discussed. The results show that HUHPC exhibits obvious strain rate sensitivity under impact loading. With the increase of strain rate, the dynamic compressive strength, dynamic elastic modulus, DIF and impact toughness of HUHPC increased. Based on the linear assumption of fiber volume fraction and dynamic compressive strength enhancement of UHPC, the calculated dynamic compressive strength of HUHPC is lower than the experimental values. As the strain rate increases, the propagation path of microcrack transforms from interface of fiber-matrix to penetrating the fiber, resulting in plastic deformation of SF and fracture of POMF, consuming a large amount of impact energy and improving the impact toughness resistance of HUHPC.http://www.sciencedirect.com/science/article/pii/S2238785422013722Ultra-high performance concreteDynamic compression behaviorHybrid fibersPolyoxymethylene fiber |
| spellingShingle | Jia-Xiang Lin Jia-Ying Su Hong-Shu Pan Yu-Qi Peng Yong-Chang Guo Wei-Shan Chen Xiao-Long Sun Bing-Xiang Yuan Guo-Tao Liu Xue-Wei Lan Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber Journal of Materials Research and Technology Ultra-high performance concrete Dynamic compression behavior Hybrid fibers Polyoxymethylene fiber |
| title | Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber |
| title_full | Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber |
| title_fullStr | Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber |
| title_full_unstemmed | Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber |
| title_short | Dynamic compression behavior of ultra-high performance concrete with hybrid polyoxymethylene fiber and steel fiber |
| title_sort | dynamic compression behavior of ultra high performance concrete with hybrid polyoxymethylene fiber and steel fiber |
| topic | Ultra-high performance concrete Dynamic compression behavior Hybrid fibers Polyoxymethylene fiber |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422013722 |
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