Flexural behavior of RC beams externally bonded with polyethylene terephthalate (PET) fiber reinforced polymer (FRP) laminates

This paper presents an experimental study on the flexural behavior of reinforced concrete (RC) beams externally strengthened with a unique and sustainable type of fiber reinforced polymer (FRP), named polyethylene terephthalate (PET). Compared to conventional FRPs, PET-FRP is characterized by its la...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Engineering structures 2022-04, Vol.256, p.114036, Article 114036
Hauptverfasser: Hawileh, Rami A., Mhanna, Haya H., Al Rashed, Ahmad, Abdalla, Jamal A., Naser, M.Z.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This paper presents an experimental study on the flexural behavior of reinforced concrete (RC) beams externally strengthened with a unique and sustainable type of fiber reinforced polymer (FRP), named polyethylene terephthalate (PET). Compared to conventional FRPs, PET-FRP is characterized by its large rupture strain and low elastic modulus. The flexural behavior of RC beams strengthened with one and two layers of PET-FRP was compared to that strengthened with one carbon FRP (CFRP) layer and an unstrengthened beam specimen. Test results showed that the specimens strengthened with two PET-FRP layers and one CFRP layer displayed equal and significant strength enhancement of 47% compared to the unstrengthened beam. However, the former exhibited higher ductility than the latter by 33%. Lower strength enhancement was depicted in the specimen strengthened with one PET-FRP layer. Despite that, the ductility of the PET-strengthened beam was substantial, which even outweighed that of the unstrengthened beam by 9%. The results of this study showed that PET-FRP is a promising strengthening material that improves structural performance and provides a sustainable alternative to conventional FRP strengthening systems.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2022.114036