Theoretical and Experimental Research on Compressive Strength of High Fly-Ash Content Concrete

Abstract:

Introduced the concept of “Cementitious Coefficient” of fly ash, theoretical formula of strength of HFCC at a certain age was found with two variables: actual water-binder ratio and micro-aggregate-binder ratio. Development regularity of compressive strength of HFCC was studied and formula of long-term strength coefficient D28t was settled. Influence of actual water-binder ratio and micro-aggregate-binder ratio on long-term strength of HFCC was analyzed. Experimental results showed that along with the single-factor increase of actual water-binder ratio and micro-aggregate-binder ratio, growth rate of long-term strength of HFCC increased; influence of actual water-binder ratio was deeper than that of micro-aggregate-binder ratio.

• Periodical: Key Engineering Materials (Volume 477)
• Pages: 257-262
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.477.257
• Online since: April 2011
• Authors: Hong Mei Ai, Li Jiu Wang, Jing Wei, Jun Ying Bai, Pu Guang Lu
• Keywords: Actual Water-Binder Ratio, Cementitious Coefficient, Compressive Strength, High Fly-Ash Content Concrete (HFCC), Micro-Aggregate-Binder Ratio

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