Mechanics of Composite Materials

, Volume 47, Issue 5, pp 529–538 | Cite as

Bond-slip behavior of CFRP plate-concrete interface

Article

The paper deals with evaluation of the bond performance between a CFRP plate and concrete with respect to various compressive strengths of concrete and bond lengths of the CFRP plate as parameters. To consider stress conditions in the tensile zone of reinforced concrete (RC) structures, double-lap axial tension tests were conducted for eight specimens with CFRP plates bonded to concrete prisms. In addition, a simple linear bond-slip model for the CFRP plate/concrete joints, developed from the bond tests, was used. To verify the model proposed, a total of seven RC beams were strengthened with CFRP plates and tested in flexure employing various bond lengths, strengthening methods, and numbers of CFRP plates. A nonlinear finite-element analysis, with the bond–slip model incorporated in the DIANA program, was performed for the strengthened RC beams. Also, the results of flexural test and analytical predictions are found to be in close agreement in terms of yield and ultimate loads and ductility.

Keywords

CFRP plate bond-slip finite-element analysis ductility 

Notes

Acknowledgement

This work was supported by the Postdoctoral Research Program of Sungkyunkwan University (2011).

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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  1. 1.Department of Civil and Environmental EngineeringSungkyunkwan UniversitySuwonRepublic of Korea

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