Prestressed FRP Sheets for Poststrengthening Reinforced Concrete Beams
Publication: Journal of Composites for Construction
Volume 5, Issue 4
Abstract
Four large-scale reinforced concrete beams were constructed and tested to investigate the effectiveness of external poststrengthening with prestressed fiber reinforced polymer (FRP) sheets. One of the beams served as a control specimen, another was strengthened with nonprestressed carbon FRP sheets, and the remaining two were strengthened with prestressed carbon FRP sheets. Presented is a method of prestressing multiple layers of the carbon fiber sheets during the application process and the experimental and analytical behavior of the beams under quasi-static loading. Comparisons are made between the control beam, the beam reinforced with nonprestressed carbon FRP sheets, and the beams strengthened with prestressed sheets. Serviceability and ultimate conditions are considered in the theoretical prediction of beam behavior, including the effects of multiple layer prestressing and external loading. The bonding of prestressed FRP sheets to the tensile face of concrete beams improved both the serviceability and the ultimate behavior of the reinforced concrete beams.
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References
1.
Andrä, H-P, and Maier, M. ( 1999). “Post-strengthening of reinforced concrete structures by prestressed externally bonded CFRP strips.” Structural Faults and Repair—99 (CD-ROM), M. C. Forde, ed.
2.
Darby, J., Skwarski, A., Brown, P., and Haynes, M. ( 1999). “Pre-stressed advanced composite plates for the repair and strengthening of structures.” Structural Faults and Repair—99 (CD-ROM), M. C. Forde, ed.
3.
Deuring, M. ( 1993). Bericht Nr.224: “Verstärken von Stahlbeton mit gespannten Faserverbundwerkstoffen.” EMPA, Dubendorf.
4.
El-Hacha, R., Wright, R. G., and Green, M. F. ( 1999). “Anchors for prestressing FRP sheets.” Proc., 1999 CSCE Annu. Conf., Regina, Saskatchewan, 2–5 June, pp. 235–244.
5.
Garden, H. N., and Mays, G. C. ( 1999). “Structural strengthening of concrete beams using prestressed plates.” Strengthening of Reinforced Concrete Structures, L. C. Hollaway and M. B. Leeming, ed., Woodhead Publishing, Cambridge, U.K.
6.
Labossière, P., Neale, K. W., and Martel, S. ( 1997). “Strengthening with composite materials: Practical applications in Québec.” Proc., U.S.-Canada-Europe Workshop on Bridge Engineering, Zurich, 89–96.
7.
Meier, U. ( 1995). “Strengthening of structures using carbon fibre/epoxy composites.” Constr. and Build. Mat., 9(6), 341–351.
8.
Nanni, A. ( 1997). “CFRP strengthening.” Concrete Int., 19(6), 19–23.
9.
Saadatmanesh, H., and Ehsani, M. R. (1991). “RC beams strengthened with GFRP plates. I: Experimental study.”J. Struct. Engrg., ASCE, 117(11), 3417–3433.
10.
Steiner. ( 1996). “Strengthening of structures with CFRP strips.” Proc., 2nd Int. Conf. on Advanced Composite Mat. in Bridges and Struct., 407–417.
11.
Triantafillou, T. C., Deskovic, N., and Deuring, M. ( 1992). “Strengthening of concrete structures with prestressed fibre reinforced plastic sheets.” ACI Struct. J., 89(3), 235–244.
12.
Wight, R. G., Green, M. F., and Erki, M. A. ( 1995). “Post-strengthening concrete beams with prestressed FRP sheets.” Proc. 2nd Int. Symp. on Non-Metallic (FRP) Reinforcement for Concrete Struct., L. Taerwe, ed., Ghent, Belgium, 568–575.
13.
Wight, R. G., Green, M. F., and Erki, M. A. ( 1996). “Post-strengthening prestressed concrete beams with prestressed FRP sheets.” Proc. 2nd Conf. on Advanced Composite Mat. in Bridges and Struct., M. M. El-Badry, ed., 449–456.
14.
Wight, R. G. ( 1998). “Strengthening concrete beams with prestressed FRP sheets.” PhD thesis, Queen's University, Kingston, Ontario, Canada.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 5 • Issue 4 • November 2001
Pages: 214 - 220
History
Received: Dec 30, 1999
Published online: Nov 1, 2001
Published in print: Nov 2001
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