Flexural behavior and strengthening of geopolymer concrete beams reinforced with GFRP bars using CRPP sheets

Author(s): Abdalla Elbana, M Talha Junaid, Salah Altoubat
Paper category: Proceedings
Book title: SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time Vol. 1 & 2
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 449-454
Total Pages: 6
Language : English

Abstract: Fiber Reinforced Polymers (FRP) are a relatively new material, and some behavioral aspects are not yet studied, especially pertaining to flexural and serviceability behavior in structural members. On the other hand, researchers have found that Geopolymer concrete has significantly high mechanical properties making it suitable for structural applications. A combination of FRP and Geopolymer should result in a durable, sustainable, and environment-friendly. This paper has two main aims. Firstly, to study the flexural behavior and serviceability of geopolymer concrete beams reinforced with Glass Fiber Reinforced Polymer (GFRP) bars. Secondly, to investigate the applicability of carbon fiber reinforced polymer (CFRP) as a strengthening regime for such systems. A total of six 2.1meter beams were tested under quasi-static four-point flexural tests for this purpose. Two identical beams were tested to failure. The remaining 4 beams were partially damaged and then repaired and strengthened with CFRP sheets using four different strengthening regimes. The CFRP strengthening system restored the capacity of the damaged beams, however, the contribution of GFRP rebars and CFRP sheet in load carrying capacity is not as efficient as in beams with conventional reinforment strengthened with CFRP. This could be attributed to the stress-strain relationship of CFRP and GFRP that is distinctly different from each other.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00