Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams
Engineered Cementitious Composite (ECC) has emerged as a promising solution with which to address the longstanding challenge of cracking in the tensile zone of reinforced concrete beams. This study conducts an experimental and analytical exploration of the flexural performance of ECC-concrete compos...
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| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/10/1592 |
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| author | Chong Gui Jinlong Ji Chongfa Xu Zhihua Li Xuan Guo |
| author_facet | Chong Gui Jinlong Ji Chongfa Xu Zhihua Li Xuan Guo |
| author_sort | Chong Gui |
| collection | DOAJ |
| description | Engineered Cementitious Composite (ECC) has emerged as a promising solution with which to address the longstanding challenge of cracking in the tensile zone of reinforced concrete beams. This study conducts an experimental and analytical exploration of the flexural performance of ECC-concrete composite beams reinforced with hot-rolled ribbed steel bars. Sixteen beams, featuring diverse reinforcement ratios and ECC layer thicknesses, underwent rigorous testing through a four-point bending setup. The experimental findings underscore a substantial improvement in crack resistance and flexural bearing capacity of ECC-concrete composite beams reinforced with steel bars. Building on these results, a theoretical model was formulated to predict the moment-deflection responses of ECC-concrete composite beams incorporating steel bars. Furthermore, practical and simplified methods were introduced to predict flexural bearing capacity and effective moment of inertia, as well as anticipate failure modes, offering a user-friendly approach for engineering applications. Validation of the proposed approaches was achieved through simulation results, demonstrating a high degree of accuracy when compared with the experimental outcomes. Moreover, the average crack width at serviceability limit states of composite beams was sensitive to specimen size and the yield strength of steel bars, and a size effect was also observed for ductility expressed as deflection. |
| format | Article |
| id | doaj-art-c8c2b5274ffd446992f1ba521ed9e98d |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-c8c2b5274ffd446992f1ba521ed9e98d2025-08-20T02:33:43ZengMDPI AGBuildings2075-53092025-05-011510159210.3390/buildings15101592Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite BeamsChong Gui0Jinlong Ji1Chongfa Xu2Zhihua Li3Xuan Guo4GuangXi Beitou Highway Construction and Investment Group Co., Ltd., Nanning, ChinaCollege of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Transportation, Southeast University, Nanjing 211189, ChinaCollege of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, ChinaCollege of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, ChinaEngineered Cementitious Composite (ECC) has emerged as a promising solution with which to address the longstanding challenge of cracking in the tensile zone of reinforced concrete beams. This study conducts an experimental and analytical exploration of the flexural performance of ECC-concrete composite beams reinforced with hot-rolled ribbed steel bars. Sixteen beams, featuring diverse reinforcement ratios and ECC layer thicknesses, underwent rigorous testing through a four-point bending setup. The experimental findings underscore a substantial improvement in crack resistance and flexural bearing capacity of ECC-concrete composite beams reinforced with steel bars. Building on these results, a theoretical model was formulated to predict the moment-deflection responses of ECC-concrete composite beams incorporating steel bars. Furthermore, practical and simplified methods were introduced to predict flexural bearing capacity and effective moment of inertia, as well as anticipate failure modes, offering a user-friendly approach for engineering applications. Validation of the proposed approaches was achieved through simulation results, demonstrating a high degree of accuracy when compared with the experimental outcomes. Moreover, the average crack width at serviceability limit states of composite beams was sensitive to specimen size and the yield strength of steel bars, and a size effect was also observed for ductility expressed as deflection.https://www.mdpi.com/2075-5309/15/10/1592ECC–concrete composite beamengineered cementitious composite (ECC)analytical modelcrack widthductilitysize effect |
| spellingShingle | Chong Gui Jinlong Ji Chongfa Xu Zhihua Li Xuan Guo Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams Buildings ECC–concrete composite beam engineered cementitious composite (ECC) analytical model crack width ductility size effect |
| title | Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams |
| title_full | Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams |
| title_fullStr | Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams |
| title_full_unstemmed | Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams |
| title_short | Experimental and Analytical Study on the Flexural Performance of Layered ECC–Concrete Composite Beams |
| title_sort | experimental and analytical study on the flexural performance of layered ecc concrete composite beams |
| topic | ECC–concrete composite beam engineered cementitious composite (ECC) analytical model crack width ductility size effect |
| url | https://www.mdpi.com/2075-5309/15/10/1592 |
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