Response Prediction of RC Beams Externally Bonded with Steel-Reinforced Polymers
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VIEW THE REPLYPublication: Journal of Composites for Construction
Volume 10, Issue 3
Abstract
This paper deals with an innovative technique for strengthening reinforced concrete (RC) structures using steel-reinforced polymer (SRP) materials. The results of an experimental campaign using RC beams strengthened in flexure with carbon fiber-reinforced polymer or SRP laminates are summarized, and the experimental outcomes are compared to the predictions provided by analytical models and code formulations in terms of flexural strength, curvature of the cross section, deflections, and crack widths. Under ultimate conditions, the ACI 440.2R-02 approach provided conservative flexural strength, and a modified expression for the bond coefficient was proposed. Under serviceability conditions, good agreement was obtained between experimental results and a theoretical model developed by the writers. Comparisons of code models in terms of both crack width and deflections highlighted the need for a calibration of code formulas to account for effects due to externally bonded reinforcement.
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Acknowledgments
The writers would like to thank Hardwire LLC, Pocomoke City, Maryland; Mapei Spa, Milan, Italy; and Sika Italia, Milan, Italy, for donating the steel tapes, FRP system, and epoxy resin/cementitious grout used to bond SRP, respectively.
References
American Concrete Institute (ACI). (1995). “Building code requirements for structural concrete.” ACI 318-95, ACI, Detroit.
American Concrete Institute (ACI). (1999). “Building code requirements for structural concrete.” ACI 318, ACI, Farmington Mills, Mich.
American Concrete Institute (ACI). (2002). “Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures.” ACI 440, ACI, Farmington Hills, Mich.
Bakis, C. E., et al. (2002). “Fiber-reinforced polymer composites for construction—State-of-the-art review.” J. Compos. Constr., 6(2), 73–87.
Ceroni, F., Pecce, M., and Matthys, S. (2004a). “Tension stiffening of RC ties strengthened with externally bonded FRP sheets.” J. Compos. Constr., 8(1), 22–32.
Ceroni, F., Pecce, M., Prota, A., and Manfredi, G. (2004b). “Flexural strengthening of RC beams using emerging materials: Cracking behavior.” Proc. Int. Conf. CICE 2004, Taylor & Francis, London, 171–178.
Comité Euro-International du Béton (CEB). (1985). “Manual on cracking deformation.” Bulletin d’Information No. 158-E, CEB, Paris.
Cosenza, E., Manfredi, G., and Nanni, A., eds. (2001). Composites in construction: A reality, ASCE, Reston, Va.
Eligehausen, R., Popov, E. P., and Bertero, V. V. (1983). “Local bond stress-slip relationships of deformed bars under generalized excitations.” Rep. No. 83/23, Environmental Engineering Research Council, Univ. of California at Berkeley, Berkeley, Calif.
Eurocode 2. (1992). “Design of concrete structures. 1-1: General rules and rules for buildings.” ENV 1992-1-1.
Hardwire LLC. (2002). “What is Hardwire.” ⟨www.hardwirellc.com⟩, Pocomoke City, Md.
International Federation for Structural Concrete (FIB). (2001). “Externally bonded FRP reinforcement of RC structures: Basis of design and safety concept.” FIB Bulletin 14, TG9.3, FIB, Lausanne, Switzerland.
Mapei. (2000). “World-wide leader in products for the building industry.” ⟨http://www.mapei.it⟩, Mapei, Milan, Italy.
Nanni, A., Cosenza, E., Manfredi, G., and Prota, A. (2001). “Composites in construction: present situation and priorities for future research.” Composites in construction: A reality, E. Cosenza, G. Manfredi, and A. Nanni, eds., ASCE, Reston, Va., 269–277.
Pecce, M., and Ceroni, F. (2004). “Modeling of tension stiffening behavior of reinforced concrete ties strengthened with fiber-reinforced plastic sheets.” J. Compos. Constr., 8(6), 510–518.
Prota, A., Tan, K., Nanni, A., Pecce, M., and Manfredi, G. (2004). “Performance of RC shallow beams externally bonded with steel reinforced polymer.” ACI Struct. J. (in press).
Sato, Y., Ueda, T., and Shoji, K. (2002). “Tension stiffening effect of reinforced concrete member strengthened by carbon fiber sheet.” Proc., Int. Symp. on Bond in Concrete, 606–613.
Smith, S. T., and Teng, J. G. (2002a). “FRP-strengthened RC beams. I: Review of debonding strength models.” Eng. Struct., 24(4), 385–395.
Smith, S. T., and Teng, J. G. (2002b). “FRP-strengthened RC beams. II: Assessment of debonding strength models.” Eng. Struct., 24(4), 397–417.
Teng, J. G., Chen, J. F., Smith, S. T., and Lam, L. (2001). FRP strengthened RC structures, Wiley, Chichester, U.K.
Ueda, T., Yamaguchi, R., Shoji, K., and Sato, Y. (2002). “Study on behavior in tension of reinforced concrete members strengthened by carbon fiber sheet.” J. Compos. Constr., 6(3), 168–174.
Zhang, Y., Toutanji, H., and Balagrou, P. (2003). “Crack widths in RC beams externally bonded with CFRP sheets.” Proc., Int. Conf. FRPRCS-6.
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© 2006 ASCE.
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Received: Nov 23, 2004
Accepted: Sep 6, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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