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The Failure Mechanism of CFRP Reinforced RC Beam under Impact Loads

  • Cementitious Materials
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Abstract

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.

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Funding

Funded by the National Natural Science Foundation of China (No. 51878190)

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Authors and Affiliations

  1. School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China

    Juan Lu  (卢娟) & Yafang Zhang  (张亚芳)

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  1. Juan Lu  (卢娟)
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  2. Yafang Zhang  (张亚芳)
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Correspondence to Yafang Zhang  (张亚芳).

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Lu, J., Zhang, Y. The Failure Mechanism of CFRP Reinforced RC Beam under Impact Loads. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 37, 1246–1251 (2022). https://doi.org/10.1007/s11595-022-2657-1

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  • DOI: https://doi.org/10.1007/s11595-022-2657-1

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