Reinforced concrete beams retrofitted with UHPC or CFRP
This study explores the reinforced concrete beams retrofitted with ultra-high-performance concrete (UHPC) or carbon fiber-reinforced polymer (CFRP). The main test items and methodologies are as follows:(i) Use basic mechanical tests to evaluate the feasibility of UHPC as a strengthening material.(ii...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522006398 |
| _version_ | 1818016212285652992 |
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| author | Yishuo Huang Ming-Gin Lee Yu-Cheng Kan Wei-Chien Wang Yung-Chih Wang Wei-Bang Pan |
| author_facet | Yishuo Huang Ming-Gin Lee Yu-Cheng Kan Wei-Chien Wang Yung-Chih Wang Wei-Bang Pan |
| author_sort | Yishuo Huang |
| collection | DOAJ |
| description | This study explores the reinforced concrete beams retrofitted with ultra-high-performance concrete (UHPC) or carbon fiber-reinforced polymer (CFRP). The main test items and methodologies are as follows:(i) Use basic mechanical tests to evaluate the feasibility of UHPC as a strengthening material.(ii) Probe into the retrofit effect of making small-sized reinforced concrete beams and using UHPC or CFRP.The results of the study show that Poisson’s ratio of UHPC to ordinary concrete is between 0.19 and 0.21, which is suitable for cement mortar or concrete repair and has good compatibility. Using UHPC or CFRP to retrofit reinforced concrete beam members, the ultimate load increases by 35% and 56.6%, respectively. However, the displacement of CFRP is only increased by 4 mm, while the displacement can be increased by 26.8 mm after UHPC (2% steel fiber) retrofit. The unit price of a reinforced concrete beam strengthened with CFRP is 2–4 times higher than that of a UHPC retrofit. Therefore, UHPC has better toughness, displacement, and fracture energy than CFRP retrofit. The UHPC is suitable for the strengthening and economic benefit of reinforced concrete structures. |
| first_indexed | 2024-04-14T07:08:57Z |
| format | Article |
| id | doaj.art-3b175f15365a4ed78a083fae9a7ddabd |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-14T07:08:57Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-3b175f15365a4ed78a083fae9a7ddabd2022-12-22T02:06:29ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01507Reinforced concrete beams retrofitted with UHPC or CFRPYishuo Huang0Ming-Gin Lee1Yu-Cheng Kan2Wei-Chien Wang3Yung-Chih Wang4Wei-Bang Pan5Department of Construction Engineering, Chaoyang University of Technology, Taichung 413, TaiwanDepartment of Construction Engineering, Chaoyang University of Technology, Taichung 413, Taiwan; Corresponding author.Department of Construction Engineering, Chaoyang University of Technology, Taichung 413, TaiwanDepartment of Civil Engineering, National Central University, Taoyuan 320, TaiwanDepartment of Civil Engineering, National Central University, Taoyuan 320, TaiwanDepartment of Construction Engineering, Chaoyang University of Technology, Taichung 413, TaiwanThis study explores the reinforced concrete beams retrofitted with ultra-high-performance concrete (UHPC) or carbon fiber-reinforced polymer (CFRP). The main test items and methodologies are as follows:(i) Use basic mechanical tests to evaluate the feasibility of UHPC as a strengthening material.(ii) Probe into the retrofit effect of making small-sized reinforced concrete beams and using UHPC or CFRP.The results of the study show that Poisson’s ratio of UHPC to ordinary concrete is between 0.19 and 0.21, which is suitable for cement mortar or concrete repair and has good compatibility. Using UHPC or CFRP to retrofit reinforced concrete beam members, the ultimate load increases by 35% and 56.6%, respectively. However, the displacement of CFRP is only increased by 4 mm, while the displacement can be increased by 26.8 mm after UHPC (2% steel fiber) retrofit. The unit price of a reinforced concrete beam strengthened with CFRP is 2–4 times higher than that of a UHPC retrofit. Therefore, UHPC has better toughness, displacement, and fracture energy than CFRP retrofit. The UHPC is suitable for the strengthening and economic benefit of reinforced concrete structures.http://www.sciencedirect.com/science/article/pii/S2214509522006398Ultra-high-performance concrete (UHPC)Carbon fiber-reinforced polymer (CFRP)RetrofitSteel fiberBeam |
| spellingShingle | Yishuo Huang Ming-Gin Lee Yu-Cheng Kan Wei-Chien Wang Yung-Chih Wang Wei-Bang Pan Reinforced concrete beams retrofitted with UHPC or CFRP Case Studies in Construction Materials Ultra-high-performance concrete (UHPC) Carbon fiber-reinforced polymer (CFRP) Retrofit Steel fiber Beam |
| title | Reinforced concrete beams retrofitted with UHPC or CFRP |
| title_full | Reinforced concrete beams retrofitted with UHPC or CFRP |
| title_fullStr | Reinforced concrete beams retrofitted with UHPC or CFRP |
| title_full_unstemmed | Reinforced concrete beams retrofitted with UHPC or CFRP |
| title_short | Reinforced concrete beams retrofitted with UHPC or CFRP |
| title_sort | reinforced concrete beams retrofitted with uhpc or cfrp |
| topic | Ultra-high-performance concrete (UHPC) Carbon fiber-reinforced polymer (CFRP) Retrofit Steel fiber Beam |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522006398 |
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