Properties of Fresh and Hardened Glass Fiber Reinforced Fly Ash Based Geopolymer Concrete

Abstract:

This paper evaluates the effects of glass fiber addition on the properties of fresh and hardened fly ash based geopolymer concrete (GPC) activated by 8 M NaOH solution (28.6%) + Na₂SiO₃ (71.4%) with a SiO₂/Na₂O ratio of 2.0. Glass fibers at the dosages of 0.50%, 0.75%, 1.00% and 1.25% by volume of concrete were added to the GPC mix. The properties of fresh and hardened glass fiber reinforced fly ash based GPC in terms of workability, density, compressive and flexural strengths were compared with those of the fly ash based GPC without using glass fiber. The experimental results indicated that inclusion of the glass fibers resulted in decrease of the workability but increase of the density, compressive and flexural strengths of the fly ash based GPC with increased fiber content.

• Periodical: Key Engineering Materials (Volumes 594-595)
• Pages: 629-633
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.594-595.629
• Online since: December 2013
• Authors: Behzad Nematollahi, Jay Sanjayan, Jessie Xia Hui Chai, Tsui Ming Lu
• Keywords: Alkaline Solutions, Compressive Strength, Flexural Strength, Fly Ash Based Geopolymer Concrete, Glass Fiber, Workability

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