Failure Behavior of Precracked Concrete Beams Retrofitted with FRP
- 1 August 1998
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Composites for Construction
- Vol. 2 (3), 138-144
- https://doi.org/10.1061/(asce)1090-0268(1998)2:3(138)
Abstract
The addition of fiber-reinforced plastic (FRP) laminates bonded to the tension face of concrete girders is becoming an attractive solution to the rehabilitation and retrofit of damaged structural systems. Flexural strength is enhanced with this method but the failure behavior of the system can become more brittle, often involving delamination of the composite and shear failure of the girder. This study first reviews failure modes including delamination with the use of FRP to rehabilitate various concrete structures and discusses methodologies used to characterize the failure processes of the system. Then, failure modes observed in an experimental program involving FRP-laminated laboratory models are reported. Physical models of reinforced concrete beams with variations in shear strengths, bonded laminate lengths, and epoxy types are precracked, then retrofitted with glass and carbon fiber-reinforced plastics and tested in an experimental program. Strengths are shown to increase with the addition of FRPs, ...Keywords
This publication has 11 references indexed in Scilit:
- On the durability of composite rehabilitation schemes for concrete: use of a peel testJournal of Materials Science, 1997
- Strengthening of structures using carbon fibre/epoxy compositesConstruction and Building Materials, 1995
- Reliability of RC Members Strengthened with CFRP LaminatesJournal of Structural Engineering, 1995
- Durability of concrete beams externally reinforced with composite fabricsConstruction and Building Materials, 1995
- Flexural strengthening of concrete beams using externally bonded composite materialsConstruction and Building Materials, 1994
- Assessment of interfacial fracture toughness in concrete compositesCement and Concrete Composites, 1993
- Numerical evaluation of interface fracture parameters using adinaComputers & Structures, 1993
- Carbon Fiber-Reinforced Polymers: Modern Materials in Bridge EngineeringStructural Engineering International, 1992
- RC Beams Strengthened with FRP Plates. II: Analysis and Parametric StudyJournal of Structural Engineering, 1991
- Discussion: “Edge-Bonded Dissimilar Orthogonal Elastic Wedges Under Normal and Shear Loading” (Bogy, D. B., 1968, ASME J. Appl. Mech., 35, pp. 460–466)Journal of Applied Mechanics, 1969