High-Volume Fly Ash Concrete for Sustainable Construction

Abstract:

With worldwide production of fly ash approaching 800 million tonnes annually, increasing the amount of fly ash used in concrete will remove more material from the solid waste stream and reduce the amount ending up in landfills. However, most specifications limit the amount of cement replacement with fly ash to less than 25 or 30%. Concrete with fly ash replacement levels of at least 50% – referred to as high-volume fly ash (HVFA) concrete – offers a potential green solution. The following study investigated the structural performance of HVFA concrete compared to conventional portland-cement concrete. Specifically, the research examined both the bond strength of reinforcing steel in HVFA concrete as well as the shear behavior of HVFA reinforced concrete. The results indicate that HVFA concrete performs as well or better than conventional portland-cement concrete.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2976-2981
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2976
• Online since: May 2012
• Authors: Jeffery S. Volz
• Keywords: Bond Strength, CoAl, Concrete, Development Length, Fly Ash (FA), Reinforcing Steel, Shear Strength, Sustainability

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