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Strength and Ductility of Concrete Beams Reinforced with Carbon Fiber-Reinforced Polymer Plates and Steel

Published

Author(s)

Dat Duthinh, M A. Starnes

Abstract

Seven concrete beams reinforced internally with steel and externally with carbon fiber-reinforced polymers (FRP) 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, 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 laminate enhances the capacity of adhesively bonded FRP anchorage. Design equations for anchorage, allowable stress, ductility, and amount of reinforcement are discussed.
Citation
Journal of Composites for Construction
Volume
8
Issue
No. 1

Keywords

anchorage, beam, building technology, carbon fiber-reinforced polymers, ductility, flexure, FRP, reinforced concrete, strengthening

Citation

Duthinh, D. and Starnes, M. (2004), Strength and Ductility of Concrete Beams Reinforced with Carbon Fiber-Reinforced Polymer Plates and Steel, Journal of Composites for Construction, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860388 (Accessed July 24, 2024)

Issues

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Created January 1, 2004, Updated June 2, 2021