Bond-slip behaviour of GFRP bars into geopolymer concrete

Maranan, Ginghis B. and Manalo, Allan C. and Karunasena, Karu and Benmokrane, Brahim (2014) Bond-slip behaviour of GFRP bars into geopolymer concrete. In: 7th International Conference on FRP Composites in Civil Engineering (CICE 2014), 20-22 Aug 2014, Vancouver, Canada.

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Geopolymer concrete reinforced with glass fibre reinforced polymer (GFRP) bars is a new and emerging technology that is suitable for the construction of corrosion resistant, durable, and highly sustainable civil infrastructures. To encourage its utilisation in the construction industry, a better understanding on its bond mechanism should be gained since it is the critical factor that controls the structural performance of reinforced concrete members. In this study, the bond-slip behaviour of 15.9 mm nominal diameter sand-coated GFRP bars with and without anchor head into geopolymer concrete, with a compressive strength of 33 MPa, was evaluated using direct pullout test. Three embedment lengths (5Ø, 10Ø, and 15Ø) were adopted to assess the interface bond between the GFRP bars and the geopolymer concrete. The results were compared to that of the pullout test of 16 mm diameter deformed steel bars embedded into geopolymer concrete. The results showed that as the embedment length increases, the pullout capacity of bond-slip specimen also increases. In addition, the GFRP bars have comparable bonding capacity to that of the deformed steel bars. Finally, the provision of anchor head increased the pullout capacity of the GFRP bar by as much as 31%.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © CICE 2014. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 27 Mar 2015 01:42
Last Modified: 16 Jun 2017 04:47
Uncontrolled Keywords: geopolymer concrete; GFRP bars; bond mechanism; bond-slip; direct pullout test; anchor head; pullout capacity
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials

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