Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings
Concrete is a brittle material due to its poor tensile strength; consequently, concrete tends to crack or peel under an applied external load. Previous studies have investigated the effect of incorporating fiber into concrete, which can improve its tensile strength. In this study, the static and dyn...
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| Format: | Article |
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/2075-5309/13/8/2044 |
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| author | Yeou-Fong Li Kun-Han Yang Pei-Yao Hsu Jin-Yuan Syu Shea-Jue Wang Wen-Shyong Kuo Ying-Kuan Tsai |
| author_facet | Yeou-Fong Li Kun-Han Yang Pei-Yao Hsu Jin-Yuan Syu Shea-Jue Wang Wen-Shyong Kuo Ying-Kuan Tsai |
| author_sort | Yeou-Fong Li |
| collection | DOAJ |
| description | Concrete is a brittle material due to its poor tensile strength; consequently, concrete tends to crack or peel under an applied external load. Previous studies have investigated the effect of incorporating fiber into concrete, which can improve its tensile strength. In this study, the static and dynamic mechanical characteristics of three types of fiber-reinforced concrete (FRC) were examined: carbon-fiber-reinforced concrete (CFRC); Kevlar-fiber-reinforced concrete (KFRC); and a combination of both, known as carbon/Kevlar-hybrid-fiber-reinforced concrete (HFRC). This study created concrete specimens by pneumatically dispersing carbon and Kevlar fibers and mixing them with cement to comprise 1% of the weight. The mixture was then combined with aggregates and water to form the concrete specimens. When compared with the benchmark concrete specimens, it was found that the compressive strength of the CFRC, KFRC, and HFRC specimens increased by about 19% to 50%, the bending strength increase by about 8% to 32%, and the splitting strength increased by about 4% to 36%. Specifically, the HFRC made with the 24 mm carbon and Kevlar fibers displayed the most significant mechanical strength in a static state. Furthermore, the HFRC showed superior resistance to impact compared to the benchmark concrete specimens across various impact energies, with the 24 mm carbon and Kevlar fiber HFRC showing the highest resistance. The inclusion of fibers in the split Hopkinson pressure bar (SHPB) test demonstrated a notable increase in the maximum strength, particularly in the case of the 12 mm carbon fiber combined with the 24 mm Kevlar fiber in the HFRC specimen. |
| first_indexed | 2024-03-11T00:04:57Z |
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| id | doaj.art-ee39f905d11d46b2b4841a08d15c189e |
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| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T00:04:57Z |
| publishDate | 2023-08-01 |
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| record_format | Article |
| series | Buildings |
| spelling | doaj.art-ee39f905d11d46b2b4841a08d15c189e2023-11-19T00:30:27ZengMDPI AGBuildings2075-53092023-08-01138204410.3390/buildings13082044Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic LoadingsYeou-Fong Li0Kun-Han Yang1Pei-Yao Hsu2Jin-Yuan Syu3Shea-Jue Wang4Wen-Shyong Kuo5Ying-Kuan Tsai6Department of Civil Engineering, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Materials, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Civil Engineering, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Civil Engineering, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Materials, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Aerospace and Systems Engineering, Feng Chia University, Taichung 40724, TaiwanDepartment of Environmental Information and Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 33551, TaiwanConcrete is a brittle material due to its poor tensile strength; consequently, concrete tends to crack or peel under an applied external load. Previous studies have investigated the effect of incorporating fiber into concrete, which can improve its tensile strength. In this study, the static and dynamic mechanical characteristics of three types of fiber-reinforced concrete (FRC) were examined: carbon-fiber-reinforced concrete (CFRC); Kevlar-fiber-reinforced concrete (KFRC); and a combination of both, known as carbon/Kevlar-hybrid-fiber-reinforced concrete (HFRC). This study created concrete specimens by pneumatically dispersing carbon and Kevlar fibers and mixing them with cement to comprise 1% of the weight. The mixture was then combined with aggregates and water to form the concrete specimens. When compared with the benchmark concrete specimens, it was found that the compressive strength of the CFRC, KFRC, and HFRC specimens increased by about 19% to 50%, the bending strength increase by about 8% to 32%, and the splitting strength increased by about 4% to 36%. Specifically, the HFRC made with the 24 mm carbon and Kevlar fibers displayed the most significant mechanical strength in a static state. Furthermore, the HFRC showed superior resistance to impact compared to the benchmark concrete specimens across various impact energies, with the 24 mm carbon and Kevlar fiber HFRC showing the highest resistance. The inclusion of fibers in the split Hopkinson pressure bar (SHPB) test demonstrated a notable increase in the maximum strength, particularly in the case of the 12 mm carbon fiber combined with the 24 mm Kevlar fiber in the HFRC specimen.https://www.mdpi.com/2075-5309/13/8/2044carbon fiberaramid fiberhybrid-fiber-reinforced concretemechanical strengthimpact loadingsplit Hopkinson pressure bar |
| spellingShingle | Yeou-Fong Li Kun-Han Yang Pei-Yao Hsu Jin-Yuan Syu Shea-Jue Wang Wen-Shyong Kuo Ying-Kuan Tsai Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings Buildings carbon fiber aramid fiber hybrid-fiber-reinforced concrete mechanical strength impact loading split Hopkinson pressure bar |
| title | Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings |
| title_full | Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings |
| title_fullStr | Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings |
| title_full_unstemmed | Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings |
| title_short | Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings |
| title_sort | comparing mechanical characterization of carbon kevlar and hybrid fiber reinforced concrete under quasistatic and dynamic loadings |
| topic | carbon fiber aramid fiber hybrid-fiber-reinforced concrete mechanical strength impact loading split Hopkinson pressure bar |
| url | https://www.mdpi.com/2075-5309/13/8/2044 |
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