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Strengthening of Reinforced Concrete Beams with Carbon FRP

Published

Author(s)

Dat Duthinh, M A. Starnes

Abstract

Seven concrete beams reinforced internally with steel and externally with carbon fiber-reinforced polymer (FRP) laminate applied after the concrete had cracked were tested under four-point bending. Results show that FRP is very effective for flexural strengthening. As the amount of steel increases, the additional strength provided by the carbon decreases. Compared to a beam reinforced heavily with steel only, the beams reinforced with both steel and carbon have adequate deformation capacity, in spite of their brittle mode of failure. Clamping or wrapping of the ends of the FRP laminate combined with adhesive bonding is effective in anchoring the laminate.
Citation
Journal of Composites for Construction

Keywords

anchorage, beam, carbon fibers, ductility, flexure, FRP (fiber-reinforced polymers), reinforced concrete, repair, strengthening

Citation

Duthinh, D. and Starnes, M. (2001), Strengthening of Reinforced Concrete Beams with Carbon FRP, Journal of Composites for Construction, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860354 (Accessed June 13, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created May 1, 2001, Updated February 19, 2017