Release Time:2019-03-11  Hits:

Indexed by: Conference Paper

Date of Publication: 2011-08-01

Included Journals: Scopus、CPCI-S、EI

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.