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Flexural behavior of seawater sea-sand coral concrete–UHPC composite beams reinforced with BFRP bars
Highlights A new type of BFRP bars reinforced Coral-SWSSC beam was proposed. A UHPC layer was adopted to partially replace the Coral-SWSSC in the compression zone. A new type of BFRP-wrapped steel tube was used as an additional tensile reinforcement. The proposed hybrid beams have promising application prospects in marine engineering.
Abstract A new type of cost-efficient concrete beam that is suitable for island environments, namely, a seawater sea-sand coral concrete (Coral-SWSSC)–ultrahigh-performance concrete (UHPC) composite beam reinforced with basalt fiber-reinforced polymer (BFRP) bars, was proposed in this paper. In these beams, the top 1/8 of the Coral-SWSSC was replaced with UHPC, and both the longitudinal bars and the stirrups were BFRP reinforcements. In addition, a new type of BFRP-wrapped steel tube (BWST) was placed in the tension zone of the beams as additional tensile reinforcement to further increase the performance. The test results showed that compared with the pure BFRP bar-reinforced Coral-SWSSC beams, the new hybrid beams exhibited much better comprehensive bending performance. The ultimate bending capacity, ultimate displacement, and energy consumption were effectively improved by adopting the UHPC replacement layer alone, and the flexural stiffness was improved significantly by adopting the BWST alone. However, when the UHPC replacement layer and the BWST were adopted simultaneously, the abovementioned performance metrics were all improved. The new hybrid beam proposed in this paper has good future application prospects in remote island environments.
Flexural behavior of seawater sea-sand coral concrete–UHPC composite beams reinforced with BFRP bars
Highlights A new type of BFRP bars reinforced Coral-SWSSC beam was proposed. A UHPC layer was adopted to partially replace the Coral-SWSSC in the compression zone. A new type of BFRP-wrapped steel tube was used as an additional tensile reinforcement. The proposed hybrid beams have promising application prospects in marine engineering.
Abstract A new type of cost-efficient concrete beam that is suitable for island environments, namely, a seawater sea-sand coral concrete (Coral-SWSSC)–ultrahigh-performance concrete (UHPC) composite beam reinforced with basalt fiber-reinforced polymer (BFRP) bars, was proposed in this paper. In these beams, the top 1/8 of the Coral-SWSSC was replaced with UHPC, and both the longitudinal bars and the stirrups were BFRP reinforcements. In addition, a new type of BFRP-wrapped steel tube (BWST) was placed in the tension zone of the beams as additional tensile reinforcement to further increase the performance. The test results showed that compared with the pure BFRP bar-reinforced Coral-SWSSC beams, the new hybrid beams exhibited much better comprehensive bending performance. The ultimate bending capacity, ultimate displacement, and energy consumption were effectively improved by adopting the UHPC replacement layer alone, and the flexural stiffness was improved significantly by adopting the BWST alone. However, when the UHPC replacement layer and the BWST were adopted simultaneously, the abovementioned performance metrics were all improved. The new hybrid beam proposed in this paper has good future application prospects in remote island environments.
Flexural behavior of seawater sea-sand coral concrete–UHPC composite beams reinforced with BFRP bars
Dong, Zhiqiang (author) / Wu, Gang (author) / Zhu, Hong (author) / Zhao, Xiao-Ling (author) / Wei, Yang (author) / Qian, Hao (author)
2020-07-14
Article (Journal)
Electronic Resource
English
Flexural Performance of UHPC Beams Reinforced with BFRP Bars
| Springer Verlag | 2023
Study on Flexural Behavior of Coral Concrete Beams Reinforced with BFRP Bars
| Springer Verlag | 2022