Fracture Analysis of FRP Reinforced Concrete Beams
Publication: Journal of Engineering Mechanics
Volume 127, Issue 6
Abstract
Carbon/epoxy FRP (Fiber Reinforced Plastic) rebars were produced with the pultrusion technique. Concrete beams reinforced with these rebars were subjected to static and cyclic 3-point bending. Flexural cracking is arrested by an adequate bond between the FRP and the concrete because of the use of a carbon fiber overwrap on the otherwise smooth pultruded rods. In spite of the brittle nature of the FRP rods and the concrete, their combined behavior demonstrate ductility in excess of what is typically expected from reinforced concrete. An analytical evaluation of the fracture energy shows that such ductility is due to the large fraction of the total strain energy that is consumed in the formation of distributed cracking in concrete. Therefore, if an adequate bond can be provided, the strain-to-failure of the FRP determines the ductility and failure mode of FRP reinforced beams.
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References
1.
Daniali, S., and Paramanantham, N. S. ( 1994). “Concrete columns reinforced with fiber reinforced plastic rebars.” Proc., 3rd Mat. Engrg. Conf., ASCE, New York, 567–574.
2.
Daniel, I. M., and Ishai, O. ( 1994). Engineering mechanics of composite materials, Oxford University Press, New York.
3.
El-bar, E. A., Ibrahim, I. M., and Mosallam, A. S. ( 1994). “Flexural response of FRP reinforced concrete structures.” Proc., 3rd Mat. Engrg. Conf., ASCE, New York, 583–591.
4.
Faza, S. ( 1996). “The next generation in composite rebars for concrete reinforcement.” Proc., 4th Mat. Engrg. Conf., ASCE, New York, 905–913.
5.
Gentry, T. R., and Bank, L. C. ( 1994). “Application of FRP reinforcement in structural precast concrete.” Proc., 3rd Mat. Engrg. Conf., ASCE, New York, 575–582.
6.
Hognestad, E., Hansen, N. M., and McHenry, D. ( 1955). “Concrete stress distribution in ultimate strength design.” ACI J., 52(4), 455–479.
7.
Macgregor, J. G. ( 1996). Reinforced concrete, 3rd Ed., Prentice-Hall, Upper Saddle River, N.J.
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Received: May 15, 2000
Published online: Jun 1, 2001
Published in print: Jun 2001
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