Experimental research on the flexural behavior of Basalt fiber‐reinforced polymer (<fc>BFRP)</fc> and steel bars hybrid reinforced concrete beams: Fid-Bau Portal

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Experimental research on the flexural behavior of Basalt fiber‐reinforced polymer (BFRP) and steel bars hybrid reinforced concrete beams

Wei, Bingyan / He, Xiongjun / Chen, Tao / Wu, Chao / Wang, Huayi

To investigate the flexural behavior of hybrid reinforced concrete (Hybrid‐RC) beams with Basalt fiber‐reinforced polymer (BFRP) bars and steel bars, this paper designed 14 Hybrid‐RC beams and studied the effect of different reinforcement forms on the flexural behavior of Hybrid‐RC beams. The research results indicated that when $ρ \approx 2.28 %$ , an increase in $A_{f} / A_{s}$ leads to a decrease in the cracking moment, ultimate moment, and ductility of Hybrid‐RC beams, the maximum crack width and deflection will increase. When $ρ \approx 0.86 %$ , an increase in $A_{f} / A_{s}$ will lead to a decrease in the cracking moment, deflection, and ductility of the Hybrid‐RC beams, while the maximum crack width and ultimate moment will increase. In addition, when $ρ \leq 1.87 %$ , the area of BFRP bars (the area of steel bars remains unchanged) should be changed to improve the flexural behavior of the Hybrid‐RC beams; When $ρ > 1.87 %$ , the Hybrid‐RC beams should change the area of steel bars (the area of BFRP bars remains unchanged) to improve the flexural behavior of the beams. In addition, the ductility index prediction equation for Hybrid (BFRP and steel)‐RC beams was fitted based on the results of the theoretical model research.

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Experimental research on the flexural behavior of Basalt fiber‐reinforced polymer (BFRP) and steel bars hybrid reinforced concrete beams

Wei, Bingyan / He, Xiongjun / Chen, Tao / Wu, Chao / Wang, Huayi

To investigate the flexural behavior of hybrid reinforced concrete (Hybrid‐RC) beams with Basalt fiber‐reinforced polymer (BFRP) bars and steel bars, this paper designed 14 Hybrid‐RC beams and studied the effect of different reinforcement forms on the flexural behavior of Hybrid‐RC beams. The research results indicated that when $ρ \approx 2.28 %$ , an increase in $A_{f} / A_{s}$ leads to a decrease in the cracking moment, ultimate moment, and ductility of Hybrid‐RC beams, the maximum crack width and deflection will increase. When $ρ \approx 0.86 %$ , an increase in $A_{f} / A_{s}$ will lead to a decrease in the cracking moment, deflection, and ductility of the Hybrid‐RC beams, while the maximum crack width and ultimate moment will increase. In addition, when $ρ \leq 1.87 %$ , the area of BFRP bars (the area of steel bars remains unchanged) should be changed to improve the flexural behavior of the Hybrid‐RC beams; When $ρ > 1.87 %$ , the Hybrid‐RC beams should change the area of steel bars (the area of BFRP bars remains unchanged) to improve the flexural behavior of the beams. In addition, the ductility index prediction equation for Hybrid (BFRP and steel)‐RC beams was fitted based on the results of the theoretical model research.

Experimental research on the flexural behavior of Basalt fiber‐reinforced polymer (BFRP) and steel bars hybrid reinforced concrete beams

Wei, Bingyan / He, Xiongjun / Chen, Tao / Wu, Chao / Wang, Huayi

To investigate the flexural behavior of hybrid reinforced concrete (Hybrid‐RC) beams with Basalt fiber‐reinforced polymer (BFRP) bars and steel bars, this paper designed 14 Hybrid‐RC beams and studied the effect of different reinforcement forms on the flexural behavior of Hybrid‐RC beams. The research results indicated that when $ρ \approx 2.28 %$ , an increase in $A_{f} / A_{s}$ leads to a decrease in the cracking moment, ultimate moment, and ductility of Hybrid‐RC beams, the maximum crack width and deflection will increase. When $ρ \approx 0.86 %$ , an increase in $A_{f} / A_{s}$ will lead to a decrease in the cracking moment, deflection, and ductility of the Hybrid‐RC beams, while the maximum crack width and ultimate moment will increase. In addition, when $ρ \leq 1.87 %$ , the area of BFRP bars (the area of steel bars remains unchanged) should be changed to improve the flexural behavior of the Hybrid‐RC beams; When $ρ > 1.87 %$ , the Hybrid‐RC beams should change the area of steel bars (the area of BFRP bars remains unchanged) to improve the flexural behavior of the beams. In addition, the ductility index prediction equation for Hybrid (BFRP and steel)‐RC beams was fitted based on the results of the theoretical model research.

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Titel:

Experimental research on the flexural behavior of Basalt fiber‐reinforced polymer (BFRP) and steel bars hybrid reinforced concrete beams

Beteiligte:

Wei, Bingyan (Autor:in) / He, Xiongjun (Autor:in) / Chen, Tao (Autor:in) / Wu, Chao (Autor:in) / Wang, Huayi (Autor:in)

Erschienen in:

Structural Concrete ; 26 ; 837-855

Erscheinungsdatum:

01.02.2025

Format / Umfang:

19 pages

ISSN:

1464-4177 , 1751-7648

DOI:

https://doi.org/10.1002/suco.202400499

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

BFRP bars , ductility , flexural behavior , hybrid reinforced , reinforcement ratio , the area ratio of FRP bars to steel bars (Af/As)

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