Critical review of strength and durability of concrete beams externally bonded with FRP

Externally bonded fibre reinforced polymer (FRP) has been proven to be a successful strengthening technique for deteriorated and aged structures. In the last two decades, an extensive number of studies have been dedicated to investigating this strengthening method. Therefore, it is considered to be...

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Bibliographic Details
Published in:Cogent engineering 2018-01, Vol.5 (1), p.1525015
Main Authors: Abid, Sallal R., Al-lami, Karrar
Format: Article
Language:English
Subjects:
Beams (structural)
Bond strength
Bonding strength
Concrete
Coupling agents
fatigue
Fatigue life
Fiber reinforced concretes
Fiber reinforced plastics
Fiber reinforced polymers
flexural strengthening
FRP
Moisture
Repair & maintenance
Shear strength
shear strengthening
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Summary:Externally bonded fibre reinforced polymer (FRP) has been proven to be a successful strengthening technique for deteriorated and aged structures. In the last two decades, an extensive number of studies have been dedicated to investigating this strengthening method. Therefore, it is considered to be extremely time-consuming for researchers to go through most of these studies. The aim of this paper is to provide an extensive review of a considerable number of papers in which a special emphasis is placed on the finding of the most recent papers. The paper focuses on the bond behaviour, testing techniques and models used to assess bonding strength. The deterioration of the FRP due to moisture has been also examined. Finally, flexural, shear and fatigue behaviours of this strengthening technique have been intensively reviewed. It was concluded that silane coupling agents can be used to enhance bond characteristics of poorly treated surfaces under moisture effect. It was also found that FRP can be used to extend the fatigue life of concrete beams. Finally, the review also showed that the Pellegrino and Modena model provides a good prediction of the shear strength of FRP-strengthened concrete beams.
ISSN:2331-1916
2331-1916
DOI:10.1080/23311916.2018.1525015