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A platform for research: civil engineering, architecture and urbanism
Evaluation of the flexural behavior and serviceability of engineered cementitious composite-coral aggregate concrete beams reinforced with BFRP bars
Abstract The combination of coral aggregate concrete and BFRP bars can solve the problem of shortage of building materials and corrosion of steel bars in concrete on islands and reefs. In this paper, to improve the serviceability limit state of the coral aggregate concrete beam reinforced with BFRP bars, a type of ECC-coral aggregate concrete beam reinforced with BFRP bars was proposed. Four-point flexural tests were carried out to study failure modes, flexural capacity, mid-span deflection and crack width of coral aggregate concrete and ECC-coral aggregate concrete beam reinforced with BFRP bars with different reinforcement ratios. Here we show that ECC had a larger role in limiting the initial crack initiation and development of beams reinforced with BFRP bars. The mechanical properties of ECC-coral aggregate concrete beams reinforced with BFRP bars under serviceability limit states are greatly improved compared with that of coral aggregate concrete beams reinforced with BFRP bars. The mid-span deflections and crack width of all ECC-coral aggregate concrete beams reinforced with BFRP bars met the guide and code requirements in the serviceability limit states. A calculation model of the flexural capacity of ECC-coral aggregate concrete beam reinforced with BFRP bars considering the effect of ECC was proposed. The flexural capacity calculation model not only accurately predicted the ultimate flexural moment of coral aggregate concrete beams reinforced with BFRP bars, but also accurately predicted the ultimate flexural moment of ECC-coral aggregate concrete beams reinforced with BFRP bars.
Evaluation of the flexural behavior and serviceability of engineered cementitious composite-coral aggregate concrete beams reinforced with BFRP bars
Abstract The combination of coral aggregate concrete and BFRP bars can solve the problem of shortage of building materials and corrosion of steel bars in concrete on islands and reefs. In this paper, to improve the serviceability limit state of the coral aggregate concrete beam reinforced with BFRP bars, a type of ECC-coral aggregate concrete beam reinforced with BFRP bars was proposed. Four-point flexural tests were carried out to study failure modes, flexural capacity, mid-span deflection and crack width of coral aggregate concrete and ECC-coral aggregate concrete beam reinforced with BFRP bars with different reinforcement ratios. Here we show that ECC had a larger role in limiting the initial crack initiation and development of beams reinforced with BFRP bars. The mechanical properties of ECC-coral aggregate concrete beams reinforced with BFRP bars under serviceability limit states are greatly improved compared with that of coral aggregate concrete beams reinforced with BFRP bars. The mid-span deflections and crack width of all ECC-coral aggregate concrete beams reinforced with BFRP bars met the guide and code requirements in the serviceability limit states. A calculation model of the flexural capacity of ECC-coral aggregate concrete beam reinforced with BFRP bars considering the effect of ECC was proposed. The flexural capacity calculation model not only accurately predicted the ultimate flexural moment of coral aggregate concrete beams reinforced with BFRP bars, but also accurately predicted the ultimate flexural moment of ECC-coral aggregate concrete beams reinforced with BFRP bars.
Evaluation of the flexural behavior and serviceability of engineered cementitious composite-coral aggregate concrete beams reinforced with BFRP bars
Liang, Xiangzhou (author) / Yin, Shiping (author)
2021-09-13
Article (Journal)
Electronic Resource
English
Study on Flexural Behavior of Coral Concrete Beams Reinforced with BFRP Bars
| Springer Verlag | 2022