Behaviour of prestressed concrete beams strengthened with externally bonded fibre reinforced polymer laminates

ILLAKKIYA, B and REVATHY, JAYASEELAN and SARANYA, S (2014) Behaviour of prestressed concrete beams strengthened with externally bonded fibre reinforced polymer laminates. In: International Conference on Advances in Civil, Structural, Environmental and Bio-Technology - CSEB 2014, 08-09 March, 2014, Kuala Lumpur, Malaysia.

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Abstract

The paper explores the results of an experimental study concerning the flexural strengthening of prestressed concrete beams using fibre reinforced polymer (FRP) laminates. Five unbonded post-tensioned concrete beams were tested in the laboratory to evaluate the strength enhancement provided by the FRP plates. Four beams were strengthened with different orientations and thicknesses of FRP laminates. Structural behaviour of the prestressed concrete beams were evaluated in terms of strength, stiffness, composite action between FRP laminate and concrete and the associated failure modes were tested under a static gradual loading up tofailure. The test results indicate that the FRP plated unbonded post-tensioned concrete beams considerably increase the strength, stiffness and composite action until failure. The failure of the specimen occurred either by crushing of concrete and/or by FRP rupture.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: deflection, ductility, FRP, strengthening, unbonded, prestressed concrete, post-tensioned beam
Depositing User: Mr. John Steve
Date Deposited: 11 May 2019 08:45
Last Modified: 11 May 2019 08:45
URI: http://publications.theired.org/id/eprint/2201

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