Deterioration of FRP-to-Concrete Bond under Failure Loading

Characteristics of FRP-to-concrete bond are observed to deteriorate under cyclic loads. Deterioration has been observed under load conditions which result in a stress range in the bonded FRP of only 4% of the material capacity. Current design recommendations and “accepted practice” often neglect thi...

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Veröffentlicht in:Advances in structural engineering 2006-12, Vol.9 (6), p.779-789
Hauptverfasser: Harries, Kent A., Aidoo, John, Zorn, Andrew, Quattlebaum, Joshua
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Aidoo, John
Zorn, Andrew
Quattlebaum, Joshua
description Characteristics of FRP-to-concrete bond are observed to deteriorate under cyclic loads. Deterioration has been observed under load conditions which result in a stress range in the bonded FRP of only 4% of the material capacity. Current design recommendations and “accepted practice” often neglect this detrimental effect. The clear effects of bond deterioration under fatigue loading are demonstrated for moderate-scale laboratory specimens and in full-scale specimens recovered from a forty-year old interstate highway bridge. The results suggest additional limit states that must be considered when even relatively small fatigue loads are present.
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subjects Bonding
Cyclic loads
Deterioration
Fatigue (materials)
Fatigue failure
Highway bridges
Limit states
Structural engineering
title Deterioration of FRP-to-Concrete Bond under Failure Loading
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