Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts
In this paper, the impact energy potential of hybrid fiber reinforced concrete (HFRC) was explored with different fiber mixes manufactured for comparative analyses of hybridization. The uniaxial compression and 3-point bending tests were conducted to determine the compressive strength and flexural s...
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| Format: | Article |
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MDPI AG
2018-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/11/12/2563 |
| _version_ | 1811256644454055936 |
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| author | Jun Feng Weiwei Sun Hongzhou Zhai Lei Wang Haolin Dong Qi Wu |
| author_facet | Jun Feng Weiwei Sun Hongzhou Zhai Lei Wang Haolin Dong Qi Wu |
| author_sort | Jun Feng |
| collection | DOAJ |
| description | In this paper, the impact energy potential of hybrid fiber reinforced concrete (HFRC) was explored with different fiber mixes manufactured for comparative analyses of hybridization. The uniaxial compression and 3-point bending tests were conducted to determine the compressive strength and flexural strength. The experimental results imply that the steel fiber outperforms the polypropylene fiber and polyvinyl alcohol fiber in improving compressive and flexural strength. The sequent repeated drop weight impact tests for each mixture concrete specimens were performed to study the effect of hybrid fiber reinforcement on the impact energy. It is suggested that the steel fiber incorporation goes moderately ahead of the polypropylene or polyvinyl alcohol fiber reinforcement in terms of the impact energy improvement. Moreover, the impact toughness of steel-polypropylene hybrid fiber reinforced concrete as well as steel-polyvinyl alcohol hybrid fiber reinforced concrete was studied to relate failure and first crack strength by best fitting. The impact toughness is significantly improved due to the positive hybrid effect of steel fiber and polymer fiber incorporated in concrete. Finally, the hybrid effect index is introduced to quantitatively evaluate the hybrid fiber reinforcement effect on the impact energy improvement. When steel fiber content exceeds polyvinyl alcohol fiber content, the corresponding impact energy is found to be simply sum of steel fiber reinforced concrete and polyvinyl alcohol fiber reinforced concrete. |
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| format | Article |
| id | doaj.art-74bbe466a29b41b388ba953943468844 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T17:44:13Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-74bbe466a29b41b388ba9539434688442022-12-22T03:22:43ZengMDPI AGMaterials1996-19442018-12-011112256310.3390/ma11122563ma11122563Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight ImpactsJun Feng0Weiwei Sun1Hongzhou Zhai2Lei Wang3Haolin Dong4Qi Wu5National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, ChinaDepartment of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaInstitute of Industrial Science, The University of Tokyo, Tokyo 1538505, JapanDepartment of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaDepartment of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaInstitute of Industrial Science, The University of Tokyo, Tokyo 1538505, JapanIn this paper, the impact energy potential of hybrid fiber reinforced concrete (HFRC) was explored with different fiber mixes manufactured for comparative analyses of hybridization. The uniaxial compression and 3-point bending tests were conducted to determine the compressive strength and flexural strength. The experimental results imply that the steel fiber outperforms the polypropylene fiber and polyvinyl alcohol fiber in improving compressive and flexural strength. The sequent repeated drop weight impact tests for each mixture concrete specimens were performed to study the effect of hybrid fiber reinforcement on the impact energy. It is suggested that the steel fiber incorporation goes moderately ahead of the polypropylene or polyvinyl alcohol fiber reinforcement in terms of the impact energy improvement. Moreover, the impact toughness of steel-polypropylene hybrid fiber reinforced concrete as well as steel-polyvinyl alcohol hybrid fiber reinforced concrete was studied to relate failure and first crack strength by best fitting. The impact toughness is significantly improved due to the positive hybrid effect of steel fiber and polymer fiber incorporated in concrete. Finally, the hybrid effect index is introduced to quantitatively evaluate the hybrid fiber reinforcement effect on the impact energy improvement. When steel fiber content exceeds polyvinyl alcohol fiber content, the corresponding impact energy is found to be simply sum of steel fiber reinforced concrete and polyvinyl alcohol fiber reinforced concrete.https://www.mdpi.com/1996-1944/11/12/2563hybrid fiber reinforced concretedrop weight testimpact energyhybrid effect index |
| spellingShingle | Jun Feng Weiwei Sun Hongzhou Zhai Lei Wang Haolin Dong Qi Wu Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts Materials hybrid fiber reinforced concrete drop weight test impact energy hybrid effect index |
| title | Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts |
| title_full | Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts |
| title_fullStr | Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts |
| title_full_unstemmed | Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts |
| title_short | Experimental Study on Hybrid Effect Evaluation of Fiber Reinforced Concrete Subjected to Drop Weight Impacts |
| title_sort | experimental study on hybrid effect evaluation of fiber reinforced concrete subjected to drop weight impacts |
| topic | hybrid fiber reinforced concrete drop weight test impact energy hybrid effect index |
| url | https://www.mdpi.com/1996-1944/11/12/2563 |
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