Experimental study of concrete beams reinforced with hybrid bars (SFCBs and BFRP bars)


This paper presents the flexural performance of new hybrid concrete beams reinforced with steel fiber-reinforced polymer composite bars (SFCBs) and basalt fiber-reinforced polymer (BFRP) bars. Ten concrete beams reinforced with hybrid SFCBs, BFRP bars, and steel bars were constructed and tested. The main parameters were the reinforcement ratio and the ratio of FRP and steel content. The new hybrid-RC beams (with SFCBs and BFRP bars) exhibited good serviceability and ductility compared to the traditional hybrid-RC beams (with steels and BFRP bars), and the proposed model can accurately predict the moment capacity, deflection and crack width of all types of hybrid-RC beams (with SFCBs, BFRP bars and steel bars) based on the experimental results and the predictions.

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The authors would like to acknowledge financial support from the Natural Science Foundation of Jiangsu Province, China (Grant No: BK20180931), the National Natural Science Foundation of China (Grant No: 51908486), the National Natural Science Foundation of China (Grant No: 51528802) and the National Natural Science Foundation of China (Grant No: 51525801).

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Correspondence to Gang Wu.

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Yang, Y., Sun, Z., Wu, G. et al. Experimental study of concrete beams reinforced with hybrid bars (SFCBs and BFRP bars). Mater Struct 53, 77 (2020). https://doi.org/10.1617/s11527-020-01514-8

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  • Flexural behavior
  • Steel fiber-reinforced polymer composite bar (SFCB)
  • Basalt fiber-reinforced polymer (BFRP)
  • Hybrid bars