Retrofitting of Deficient RC Cantilever Slabs Using GFRP Strips
Publication: Journal of Composites for Construction
Volume 4, Issue 2
Abstract
Despite many studies on beams and slabs strengthened using fiber-reinforced plastic (FRP) plates, no study has been reported on the strengthening of RC cantilever slabs (e.g., canopies and balconies) using FRP materials. This paper presents the results of an experimental study of the feasibility of strengthening deficient RC cantilever slabs by bonding glass FRP (GFRP) strips/sheets on the top surface (the tension side). As the key to the success of this strengthening method is a proper way of anchoring the GFRP strips into the supporting wall and the slab, the effectiveness of different anchorage systems was the focus of the experiments. Based on the test results, a simple and effective method is identified in which the GFRP strips are anchored into the walls through horizontal slots and onto the slab using fiber anchors.
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References
1.
Chajes, M. J., Thomson, T. A., Jr. Januszka, T. F., and Finch, W. W., Jr. (1994). “Flexural strengthening of concrete beams using externally bonded composite materials.” Constr. and Build. Mat., 8(3), 191– 201.
2.
Malek, M., Saadatmanesh, H., and Ehsani, M. R. (1998). “Prediction of failure load of R/C beams strengthened with FRP plate due to stress concentration at the plate end.” ACI Struct. J., 95(2), 142–152.
3.
Meier, U., and Winistorfer, A. ( 1995). “Retrofitting of structures through external bonding of CFRP sheets.” Non-metallic (FRP) reinforcement for concrete structures, L. Taerwe, ed., E & FN Spon, London, 465–472.
4.
Quantrill, R. J., Hollaway, L. C., and Thorne, A. M. (1996). “Predictions of the maximum plate end stresses of FRP strengthened beams: Part I and Part II.” Mag. of Concrete Res. 48(177), 343–351.
5.
Sharif, A., Al-Sulaimani, G. J., Basunbul, I. A., Baluch, M. B., and Ghaleb, B. N. (1994). “Strengthening of initially load reinforced concrete beams using FRP plates.” ACI Struct. J., 91, 160.
6.
Spadea, G., Bencardino, F., and Swamy, R. N. (1998). “Structural behaviour of composite beams with externally bonded CFRP.”J. Compos. for Constr., ASCE, 2(3), 132–137.
7.
Taerwe, L., ed. (1995). Non-metallic (FRP) reinforcement of concrete structures. E & FN Spon, London.
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Received: Dec 29, 1998
Published online: May 1, 2000
Published in print: May 2000
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