Behavior of concrete confined by carbon fiber reinforced geopolymer adhesive tube under axial load

• Main Authors: Salman, Wissam D., Sachet, Wrood H., Hadi, Noor S., Ali, Hanaa A.
• Format: Conference Proceeding
• Language: English
• Subjects: Axial loads; Axial stress; Carbon fiber reinforced concretes; Carbon fiber reinforced plastics; Carbon fiber reinforcement; Carbon-epoxy composites; Compression loads; Confinement; Epoxy adhesives; Fiber reinforced polymers; Fly ash; Geopolymers; GGBS; Granulation; Slag
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0105598

This paper investigates how concrete behaved when a carbon fiber reinforced geopolymer adhesive tube confined it. The effects of ground granulated blast furnace slag content on the geopolymer adhesive that used to reinforce the carbon fiber tube were investigated. The experimental program included, twenty-four cylinder concrete specimens confined by two layers of carbon fiber tube. Two specimens were confined by carbon fiber reinforced epoxy adhesive (CFREA) tube and twenty -two specimens were confined by carbon fiber reinforced geopolymer adhes ive (CFRGA) tube. Eleven mixes of geopolymer adhesive were prepared with replacement (0% to 100% by increment 10%) of binder by slag. Confinement specimens were tested under compression load. Based on the test results, the optimal geopolymer adhesive was found at the specimens confined by carbon fiber tube reinforced with a fully slag based geopolymer adhes ive, gave a s ig nificant axial stress enhancement ratio and deformation capacity by (2 and 10 times) respectively, which exceeded axial stresses of specimens confined by carbon fiber tube reinforced with fly ash based geopolymer adhesive tube by about (35%), which constituted about (98%) of epoxy adhesive tube. Finally, it is worth noting that it could be considered the geopolymer adhesive as a sustainab le and effective alternat ive to epoxy adhesive in concrete confinement techno logy.