Comparison of the shear behaviour of geopolymer concrete beams with GFRP and steel transverse reinforcements
Paper
Paper/Presentation Title | Comparison of the shear behaviour of geopolymer concrete beams with GFRP and steel transverse reinforcements |
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Presentation Type | Paper |
Authors | Maranan, Ginghis B. (Author), Manalo, Allan C. (Author), Karunasena, Warna M. (Author), Benmokrane, Brahim (Author) and Mendis, Priyan A. (Author) |
Editors | Wu, Zhishen, Wu, Gang and Wang, Xin |
Journal or Proceedings Title | Proceedings, Joint Conference of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & the 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) |
ERA Conference ID | 50929 |
Journal Citation | 1, pp. 169-174 |
Number of Pages | 6 |
Year | 2015 |
Place of Publication | China |
Web Address (URL) of Paper | http://iiuse.seu.edu.cn/frprcs12_apfis2015/ |
Conference/Event | Joint Conference of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & the 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) |
International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures | |
Event Details | Joint Conference of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & the 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) Event Date 14 to end of 16 Dec 2015 Event Location Nanjing, China |
Event Details | International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures FRPRCS |
Abstract | This study presents a comparison of the shear behaviour of geopolymer concrete beams transversely reinforced with glass fiber-reinforced polymer (GFRP) and steel bars. Two full-scale beams with GFRP and steel stirrups spaced at 150 mm on-center were fabricated and tested up to failure using the four-point static bending test. Another beam without web reinforcements was also cast to determine the shear contribution of the geopolymer concrete. All the beams were provided with the same amount of flexural reinforcements. The beams were supported over a 1200 mm clear span with 450 mm shear span on each side. The shear span-to-depth ratio of the beams was 1.8. Based on the test results, the provision of GFRP stirrups almost doubled the shear capacity of the beam without web reinforcements. Comparable load-deflection response, shear strength, deflection capacity, and strain readings were observed between the beams with GFRP and steel stirrups. The two beams yielded similar crack pattern; however, wider cracks were developed in the former beam owing to the lower elastic modulus of GFRP bar compared with steel bar. Furthermore, both beams failed in shear, classified as a diagonal strut compression failure; however, the failure of the beam with GFRP stirrups was induced by the stirrup’s lap splice failure while steel yielding caused the failure of beam with steel stirrups. This had led to a more brittle final failure of the former beam compared with the latter beam. |
Keywords | shear behaviour; GFRP bars; composites; geopolymer concrete; stirrups |
ANZSRC Field of Research 2020 | 400505. Construction materials |
400510. Structural engineering | |
Public Notes | Abstract only published in Proceedings. No evidence of copyright restrictions preventing deposit of Submitted Version. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
University of Sherbrooke, Canada | |
University of Melbourne | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q343x/comparison-of-the-shear-behaviour-of-geopolymer-concrete-beams-with-gfrp-and-steel-transverse-reinforcements
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