Stress Transfer between FRP Laminates and Concrete through Deteriorated Concrete Surfaces
Publication: Journal of Composites for Construction
Volume 11, Issue 4
Abstract
This study investigated the mechanism of stress transfer between glass and carbon fiber-reinforced polymer (FRP) laminates and concrete beams with deteriorated surfaces. Thirty-six beams were prepared with either a solid concrete cross section, or with a weak concrete layer at the surface, simulating the state of a deteriorated surface. The beams were reinforced with glass or carbon FRP sheets and tested in flexure. Strain development in the laminate and in the concrete layers was recorded and analyzed. The mode of failure changed from shear within the deteriorated layer of concrete to delamination at the interface between the resin and the concrete in the solid high-strength concrete. A significant amount of stress was transferred between the FRP laminates and the concrete surface probably by residual frictional stresses after shear cracks developed in the deteriorated layer, leading to a remarkable load bearing capacity of these beams.
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References
American Concrete Institute (ACI). (2002). “Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures.” ACI 440.2R-02, Farmington Hills, Mich.
Bizindavyi, L., and Neale, K. W. (1999). “Transfer lengths and bond strengths for composites bonded to concrete.” J. Compos. Constr., 3(4), 153–160.
Chen, J. F., Yang, Z. J., Pan, X. M., and Holt, G. D. (2001). “Effect of test methods on plate-to-concrete bond strength.” Proc., Fibre-Reinforced Plastics for Reinforced Concrete Structures—FRPRCS-5, C. J. Burgoyne, ed., Vol. 1, Thomas Telford, London, 429–438.
De Lorenzis, L., Miller, B., and Nanni, A. (2001). “Bond of fiber-reinforced polymer laminates to concrete.” ACI Mater. J., 98(3), 256–264.
Eberline, D. K., Klaiber, F. W., and Dunker, K. (1988). “Bridge strengthening with epoxy-bonded steel plates.” Transportation Research Record. 1180, Transportation Research Board, Washington, D.C., 7–11.
Etman, E. E., and Beeby, A. W. (2000). “Experimental program and analytical study of bond stress distributions on a composite plate bonded to a reinforced concrete beam.” Cem. Concr. Compos., 22(4), 281–291.
Horiguchi, T., and Saeki, N. (1997). “Effect of test methods and quality of concrete on bond strength of CFRP sheet.” Proc., Non Metallic (FRP) Reinforcement for Concrete Structures, Vol. 1, Japan Concrete Institute, Tokyo, 265–270.
Jia, J., Boothby, T. E., Bakis, C. E., and Brown, T. L. (2005). “Durability evaluation of glass fiber reinforced-polymer-concrete bonded interfaces.” J. Compos. Constr., 9(4), 348–359.
Mukhopadhyaya, P., and Swamy, N. (2001). “Interface shear stress: A new design criterion for plate debonding.” J. Compos. Constr., 5(1), 35–43.
Nguyen, D. M., Chan, T. K., and Cheong, H. K. (2001). “Brittle failure and bond development length of CFRP-concrete beams.” J. Compos. Constr., 5(1), 12–17.
Rabinovitch, O., and Frostig, Y. (2000). “Closed-form high-order analysis of RC beams strengthened with FRP strips.” J. Compos. Constr., 4(2), 65–74.
Smith, S. T., and Teng, J. G. (2002). “FRP-strengthened RC beams. I: Review of debonding strength models.” Eng. Struct., 24(4), 385–395.
Swamy, R. N., Jones, R., and Bloxham, J. W. (1987). “Structural behaviour of reinforced concrete beams strengthened by epoxy-bonded steel plates.” Struct. Eng., 65A(2), 59–68.
Van-Gemert, D., and Vanden, B. M. (1986). “Long-term performance of epoxy bonded steel-concrete joints.” Proc., Adhesion between Polymers and Concrete, Chapman and Hall, London, 518–527.
Xie, M., and Karbhari, V. M. (1998). “Peel test for characterization of polymer composite/concrete interface.” J. Compos. Mater., 32(21), 1894–1913.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 4 • August 2007
Pages: 410 - 418
Copyright
© 2007 ASCE.
History
Received: Dec 12, 2005
Accepted: Jul 13, 2006
Published online: Aug 1, 2007
Published in print: Aug 2007
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