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AuthorYounis, Adel
AuthorEbead, Usama
AuthorSuraneni, Prannoy
AuthorNanni, Antonio
Available date2023-01-29T09:23:42Z
Publication Date2020
Publication NameComposite Structures
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.compstruct.2020.111860
URIhttp://hdl.handle.net/10576/39143
AbstractCombining seawater, recycled coarse aggregate (RCA), and glass fiber reinforced polymer (GFRP) reinforcement in concrete is potentially advantageous from a sustainability perspective. This paper reports on the results of an experimental study on the short-term flexural performance of seawater-mixed recycled-aggregate concrete beams with GFRP bars. Twelve medium-scale reinforced concrete (RC) beams (150x260x2200 mm) were tested under four-point loading. The test variables included the mixing water (seawater/freshwater), aggregate type (conventional/recycled), and reinforcement material (black steel/GFRP). A wide range of flexural properties, including failure mode, cracking behavior, load-carrying capacity, deformation, energy absorption, and ductility were characterized and compared among the beam specimens. The results suggest that the use of seawater and RCA in concrete has insignificant effects on the flexural capacity of RC beams, especially if concrete strength is preserved by adjusting the mixture design. Altering reinforcement material had a strong influence on the flexural capacity and performance of the tested specimens: the GFRP-RC beams exhibited higher load-carrying capacities (on average 25%) but inferior deformational characteristics as compared to their steel-reinforced counterparts. Theoretical predictions were obtained for the flexural capacity, crack width, and deflection of steel- and GFRP-RC beams based on their corresponding design guides, and compared with the experimental results. 2020 Elsevier Ltd
SponsorThis effort was made possible by the NPRP grant # NPRP 9-110-2-052 from the Qatar National Research Fund (a member of Qatar Foundation). The findings achieved herein are solely the responsibility of the authors. Special thanks are due to ATP Construction Composites for providing the GFRP reinforcement used in the current study. The authors would like to thank Readymix Qatar (as a part of LafargeHolcim) for providing the expertise that greatly assisted the authors in this research. Appendix A
Languageen
PublisherElsevier
SubjectFlexural performance
GFRP-reinforced concrete
Recycled-aggregate concrete
Reinforced concrete beams
Seawater-mixed concrete
Sustainable concrete
TitleShort-term flexural performance of seawater-mixed recycled-aggregate GFRP-reinforced concrete beams
TypeArticle
Volume Number236
dc.accessType Abstract Only


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