The Failure Mechanism of CFRP Reinforced RC Beam under Impact Loads

The influence of carbon fiber reinforced plastic (CFRP) on dynamic mechanical properties of reinforced concrete (RC) beam was studied by drop hammer impact test system. The impact behaviors of beam, including failure mode, impact force peak value and peak deflection were analyzed. The experimental r...

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Veröffentlicht in:	Journal of Wuhan University of Technology. Materials science edition 2022-12, Vol.37 (6), p.1246-1251
Hauptverfasser:	Lu, Juan, Zhang, Yafang
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbon fiber reinforced concretes Carbon fiber reinforced plastics Cementitious Materials Chemistry and Materials Science Deflection Drop hammers Dynamic mechanical properties Failure analysis Failure mechanisms Failure modes Hammers Impact loads Impact tests Materials Science Mechanical properties
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Zusammenfassung:	The influence of carbon fiber reinforced plastic (CFRP) on dynamic mechanical properties of reinforced concrete (RC) beam was studied by drop hammer impact test system. The impact behaviors of beam, including failure mode, impact force peak value and peak deflection were analyzed. The experimental results show that bonding CFRP can reduce the crack width and change the failure mode of the beam. The length of CFRP has a certain influence on the impact force and deflection, and the peak inertia force of most beams is roughly in the range of 1/2-5/6 of the peak impact force. In addition, dynamic increase factor (DIF) increases with the increase of CFRP length, and its maximum value can reach 2.11.
ISSN:	1000-2413 1993-0437
DOI:	10.1007/s11595-022-2657-1