Pullout behaviour of GFRP bars with anchor head in geopolymer concrete

Maranan, G.B. and Manalo, A.C. and Karunasena, W. and Benmokrane, B. (2015) Pullout behaviour of GFRP bars with anchor head in geopolymer concrete. Composite Structures, 132. pp. 1113-1121. ISSN 0263-8223

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The geopolymer concrete internally reinforced with fibre-reinforced polymer (FRP) bars is anticipated to offer durable, sustainable, and cost-effective civil infrastructures. In this study, the effect of the anchor head on the pullout behaviour of the sand coated glass-fibre-reinforced polymer (GFRP) bars embedded in the geopolymer concrete was investigated using a direct pullout test. Straight and headed GFRP bars with different nominal diameters Ø (12.7 mm, 15.9 mm, and 19.0 mm) and embedment lengths ld (0Ø+lah, 5Ø+lah, and 10Ø+lah for headed bars, where lah stands for the anchor head length, and 5Ø and 10Ø for straight bars) were considered. The results showed that the provision of anchor head is an efficient method to enhance the anchorage capacity of GFRP bars in geopolymer concrete. The anchor heads improved the anchorage of the sand coated GFRP bars by as much as 49% to 77%. Furthermore, the mechanical bearing resistance provided by the anchor head alone resulted in the development of approximately 45% of the GFRP bars’ nominal tensile strength. A comparison of the experimental results with the published studies showed that a much higher load is required to pullout the GFRP bars in geopolymer concrete than in Ordinary Portland Cement-based concrete.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Accepted version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 09 Oct 2015 04:44
Last Modified: 26 Jul 2016 05:29
Uncontrolled Keywords: geopolymer concrete; glass-fibre-reinforced polymer (GFRP); anchorage; anchor head; pullout behaviour; headed GFRP bar
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Identification Number or DOI: 10.1016/j.compstruct.2015.07.021
URI: http://eprints.usq.edu.au/id/eprint/27592

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