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Effects of the Amount and Shape of Carbon Fiber-Reinforced Polymer Strengthening Elements on the Ductile Behavior of Reinforced Concrete Beams

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Mechanics of Composite Materials Aims and scope

A series of beam tests were performed to evaluate the ductility of reinforced concrete (RC) beams strengthened with carbon-fiber-reinforced polymer (CFRP) elements. A total of nine RC beams were produced and loaded up to failure in three-point bending under deflection control. In addition, the amount and shape of the CFRP elements (plates/sheets) were considered as the key test variables. Test results revealed that the strengthening with CFRP elements in the width direction was more effective than the strengthening across their height. The energy method used in an analysis showed that the energy ratio of the beams strengthened with CFRP plates were half or less than half of the energy ratio of the beams strengthened with CFRP sheets. In addition, the ductility of the beams decreased as the strengthening ratio of the CFRP elements increased.

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Acknowledgement

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2013R1A1A2059122)

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Authors and Affiliations

  1. College of Engineering, Sungkyunkwan University, 300, Cheongcheong-dong, Jangan-gu, Suwon, 440-746, Republic of Korea

    Sungnam Hong

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  1. Sungnam Hong
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Correspondence to Sungnam Hong.

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Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 50, No. 4, pp. 603-614, July-August, 2014.

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Hong, S. Effects of the Amount and Shape of Carbon Fiber-Reinforced Polymer Strengthening Elements on the Ductile Behavior of Reinforced Concrete Beams. Mech Compos Mater 50, 427–436 (2014). https://doi.org/10.1007/s11029-014-9429-8

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  • DOI: https://doi.org/10.1007/s11029-014-9429-8

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