Ductility enhancement of geopolymer concrete columns using FRP confinement

Lokuge, Weena and Karunasena, Warna (2016) Ductility enhancement of geopolymer concrete columns using FRP confinement. Journal of Composite Materials, 50 (14). pp. 1887-1896. ISSN 0021-9983

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Geopolymer concrete is an environmentally friendly, green construction material. However its use is constrained by its increased brittleness and lack of understanding of its behaviour under multi-axial loadings. Similar to Ordinary Portland Cement concrete (OPC), the ductility of geopolymer concrete columns can be increased by lateral confinement and using Fibre Reinforce Polymers is one option in doing that. This research paper aims at investigating the effect of different confinement on the ductility of geopolymer concrete.
Three different mixes with varying binder (fly ash and slag) and different curing conditions together with different levels of carbon fibre reinforced polymer (CFRP) and glass fibre reinforced polymer (GFRP) confinement were investigated in this research paper. FRP confined normal strength geopolymer concrete shows similar stress-strain behaviour to those for high strength OPC concrete When compared with the same level of confinement, CFRP confined geopolymer concrete marginally outperforms GFRP confined geopolymer concrete in 28 day compressive strength. However ductility levels with GFRP confinement are better than those with CFRP confinement.

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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: 14 Mar 2016 23:58
Last Modified: 13 Dec 2017 00:07
Uncontrolled Keywords: geopolymer concrete, fly ash, slag, stress-strain relationship, ductility, confinement
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1177/0021998315597553
URI: http://eprints.usq.edu.au/id/eprint/28104

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