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Indexed by:会议论文

Date of Publication:2011-08-01

Included Journals:EI、CPCI-S、Scopus

Volume:477

Page Number:257-262

Key Words:high fly-ash content concrete (HFCC); compressive strength; cementitious coefficient; actual water-binder ratio; micro-aggregate-binder ratio

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 D-28(t) 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.