Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment
Existing studies have proved that the incorporation of polypropylene fiber can effectively improve the impact resistance of concrete. In this paper, the split Hopkinson pressure bar and digital pulse shaping technology are used to further study the dynamic compression performance and constitutive re...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/9079019 |
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| _version_ | 1850109849470238720 |
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| author | Jingshuo Zhao Xiaolin Yang Jiang Fan Shiwu Gao Hongwei Ma |
| author_facet | Jingshuo Zhao Xiaolin Yang Jiang Fan Shiwu Gao Hongwei Ma |
| author_sort | Jingshuo Zhao |
| collection | DOAJ |
| description | Existing studies have proved that the incorporation of polypropylene fiber can effectively improve the impact resistance of concrete. In this paper, the split Hopkinson pressure bar and digital pulse shaping technology are used to further study the dynamic compression performance and constitutive relationship of concrete in the cold regions under the deteriorating effect of freeze-thaw cycle, and obtain the dynamic increase factor. Studies have shown that polypropylene fiber-reinforced high-strength concrete has a strain rate enhancement effect. The number of freeze-thaw cycle times at low strain rates has an obvious effect on concrete deterioration, and the effect is weaker at higher strain rates. By comparing three typical dynamic strength growth factor models with the test results, after revising the model, the dynamic increase factor equations under different freeze-thaw circulation times were fitted. This research provides a basis for the design of durability and robustness of building structures in cold regions. |
| format | Article |
| id | doaj-art-439af79d8f7148eab61d7a60d3ebc8d0 |
| institution | OA Journals |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-439af79d8f7148eab61d7a60d3ebc8d02025-08-20T02:37:58ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/9079019Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw EnvironmentJingshuo Zhao0Xiaolin Yang1Jiang Fan2Shiwu Gao3Hongwei Ma4School of Civil EngineeringSchool of Civil EngineeringGansu Province Transportation PlanningSchool of Civil EngineeringSchool of Civil EngineeringExisting studies have proved that the incorporation of polypropylene fiber can effectively improve the impact resistance of concrete. In this paper, the split Hopkinson pressure bar and digital pulse shaping technology are used to further study the dynamic compression performance and constitutive relationship of concrete in the cold regions under the deteriorating effect of freeze-thaw cycle, and obtain the dynamic increase factor. Studies have shown that polypropylene fiber-reinforced high-strength concrete has a strain rate enhancement effect. The number of freeze-thaw cycle times at low strain rates has an obvious effect on concrete deterioration, and the effect is weaker at higher strain rates. By comparing three typical dynamic strength growth factor models with the test results, after revising the model, the dynamic increase factor equations under different freeze-thaw circulation times were fitted. This research provides a basis for the design of durability and robustness of building structures in cold regions.http://dx.doi.org/10.1155/2022/9079019 |
| spellingShingle | Jingshuo Zhao Xiaolin Yang Jiang Fan Shiwu Gao Hongwei Ma Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment Advances in Materials Science and Engineering |
| title | Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment |
| title_full | Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment |
| title_fullStr | Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment |
| title_full_unstemmed | Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment |
| title_short | Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment |
| title_sort | research on dynamic compressive performance of polypropylene fiber reinforced high strength concrete under freeze thaw environment |
| url | http://dx.doi.org/10.1155/2022/9079019 |
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