The Evaluation of Bond-Slip Behaviour of GFRP Bars in Conventional and Sustainable Concrete


Due to the significant increase in the demand for eco-friendly materials, conventional concrete and mildsteel have become less recommended due to the excessive CO2 emission of conventional concreteand corrosion issues of mild steel. Thus, other eco-friendly alternatives have risen to partially replacethese two materials. The first alternative is glass fiber reinforced polymers and the other is high volumefly ash concrete. This study investigates the bond-slip performance of glass fiber bars implanted inconventional and high volume fly ash concrete. The results were then compared to bond-slip resultsyielded from using mild steel. A total of twenty four cylinder specimens were tested in this study. Onelevel of high volume fly ash replacement of cement was used, 70%. Additionally, 13 mm (1/2 in.) and19 mm (3/4 in.) glass fiber and mild steel bars were investigated. The study was conducted followingthe recommendation of RILEM. The results indicated that, regardless the type of concrete, glass fiberhad less bond strength than that resulted from using mild steel.

Meeting Name

9th Biennial Conference on Advanced Composites in Construction 2019, ACIC 2019 (2019: Sep. 3-5, Birmingham, United Kingdom)


Civil, Architectural and Environmental Engineering

Keywords and Phrases

Environmental protection; Fiber reinforced plastics; Fly ash; Glass fibers; Low carbon steel; Steel corrosion; Steel fibers, CO2 emissions; Conventional concrete; Eco-friendly materials; Glass fiber reinforced polymer; High volume fly ash; High volume fly ash concrete; Sustainable concretes; Two-materials, Concretes

Document Type

Article - Conference proceedings

Document Version


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Publication Date

01 Sep 2019

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