Direct versus Indirect Method for Identifying FRP-to-Concrete Interface Relationships
Publication: Journal of Composites for Construction
Volume 13, Issue 3
Abstract
Several proposals have been carried out for modeling a fiber-reinforced-polymer (FRP)-to-concrete interface whose behavior is not completely described by fracture energy value, which could often be derived in closed form. Although the bilinear formulation is one of the most widely accepted relationships, neither standard testing procedures nor well-established calibration and identification techniques are currently available. The present paper mainly deals with the latter aspect and is basically aimed at examining the differences possibly arising from adopting either direct or indirect techniques for identifying the interface relationship. In particular, after an outline of the analytical formulation of both mentioned identification methods, their application is proposed considering a set of experimental results already utilized by other authors in similar studies. Besides the expected superiority of the indirect procedure in identifying the interface relationship, emphasis is placed on the fact that such a procedure is quite unaffected by the possible reduction in the number of experimental data considered in calibrating the interface relationship.
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Acknowledgments
The present paper deals with the subject of concern for Line 8, Task 2 of the DPC/ReLUIS research project that partially granted the research.
References
Chajes, M. J., Finch, W. W., Januszka, T. F., and Thomson, T. A. (1996). “Bond and force transfer of composite-material plates adhered to concrete.” ACI Struct. J., 93(2), 208–217.
Faella, C., Martinelli, E., and Nigro, E. (2003). “Interface behavior in FRP plates bonded to concrete: Experimental tests and theoretical analyses.” Proc., 2003 Conf. on Advanced Materials for Construction of Bridges, Buildings, and Other Structures III, ECI, Davos, Switzerland.
Faella, C., Martinelli, E., and Nigro, E. (2008). “Formulation and validation of a theoretical model for intermediate debonding in FRP-strengthened RC beams.” Composites, Part B, 39, 645–655.
fib: Bulletin d’information n. 14. (2001). “Externally bonded FRP reinforcement for RC structures.”
Japan Society of Civil Engineers (JSCE). (2001). “Recommendations for upgrading of concrete structures with use of continuous fiber sheets.” Concr. Eng. Ser., 41, 31–34.
Lu, X. Z., Teng, J. G., Ye, L. P., and Jiang, J. J. (2005). “Bond-slip models for FRP sheets/plates bonded to concrete.” Eng. Struct., 27(6), 920–937.
Savoia, M., Ferracuti, B., and Mazzotti, C. (2003). “Nonlinear bond-slip law for FRP-concrete interface.” Proc., Conf. FRPRCS-6, Singapore.
Taljsten, B. (1996). “Strengthening of concrete prisms using the plate-bonding technique.” Int. J. Fract., 82(3), 253–266.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 13 • Issue 3 • June 2009
Pages: 226 - 233
Copyright
© 2009 ASCE.
History
Received: Mar 4, 2008
Accepted: Oct 15, 2008
Published online: May 15, 2009
Published in print: Jun 2009
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