Flexural response of GFRP-reinforced geopolymer concrete beams
Paper
Paper/Presentation Title | Flexural response of GFRP-reinforced geopolymer concrete beams |
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Presentation Type | Paper |
Authors | Maranan, Ginghis B. (Author), Manalo, Allan C. (Author), Karunasena, Warna (Author), Benmokrane, Brahim (Author) and Mendis, Priyan (Author) |
Editors | Sanjayan, Jay |
Journal or Proceedings Title | Proceedings of the 27th Biennial National Conference of the Concrete Institute of Australia (Concrete 2015) |
ERA Conference ID | 60206 |
Number of Pages | 10 |
Year | 2015 |
Place of Publication | Australia |
ISBN | 9781943847709 |
Web Address (URL) of Paper | http://concrete2015.com.au/ |
Conference/Event | 27th Biennial National Conference of the Concrete Institute of Australia (Concrete 2015) in conjunction with the 69th RILEM Week: Construction Innovations, Research into Practice |
Concrete Institute of Australia - Biennial Conference | |
Event Details | 27th Biennial National Conference of the Concrete Institute of Australia (Concrete 2015) in conjunction with the 69th RILEM Week: Construction Innovations, Research into Practice Parent Biennial Conference of the Concrete Institute of Australia Event Date 30 Aug 2015 to end of 02 Sep 2015 Event Location Melbourne, Australia |
Event Details | Concrete Institute of Australia - Biennial Conference |
Abstract | This study investigated the flexural response of glass fibre reinforced polymer-reinforced geopolymer concrete (GFRP-RGC) beams using a four-point static bending test. Three full-scale beams were cast and reinforced with nearly same amount of longitudinal GFRP reinforcements but of varying diameters at the bottom (4-12.7 mm, 3-15.9 mm, and 2-19.0 mm), two 12.7 mm GFRP bars at the top, and 9.5 mm GFRP stirrups spaced at 100 mm on-centre. The average compressive strength of the geopolymer concrete was 38.2 MPa. Based on the experimental results, all the tested beams showed nearly similar crack pattern, load-deflection response, bending-moment and deflection capacities, and strain readings, suggesting that the flexural response of a GFRP-RGC beam was not significantly influenced by the bar diameter; instead, by the properties of the geopolymer concrete. The 0.3Mu criterion suggested by Bischoff must be adapted in the serviceability design of a GFRP-RGC beam. The flexural capacities of the tested beams were generally higher than the predicted values from ACI 440.1R-06 and CSA S806-12 standards. Furthermore, the GFRP-RGC beams have higher strength compared with their GFRP-reinforced concrete counterparts. Thus, it can be concluded that the GFRP-RGC beams have structural properties that are suitable for civil infrastructure applications. |
Keywords | flexural response; geopolymer concrete; GFRP bars; four-point static bending test; civil infrastructure |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
400505. Construction materials | |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
University of Sherbrooke, Canada | |
University of Melbourne | |
Swinburne University of Technology | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3435/flexural-response-of-gfrp-reinforced-geopolymer-concrete-beams
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