The analysis on strength and fly ash effect of roller- compacted concrete with high volume fly ash

摘要

In this paper, the strength of roller-compactedconcrete with high volume fly ash (HFRCC) is examined. By usingthe notion of "specific strength," the qualified contribution of flyash effect to construction formation and strength development ofHFRCC is also analyzed. The research results show that: (1) Thestrength at early ages of HFRCC is poor, while the fly ash effect islow or negative. (2) The strength of HFRCC increases rapidlyfollowing its curing age; meanwhile, the fly ash effect graduallyimproves and is more beneficial to raising flexural strength. (3)With increasing proportion of fly ash, its effect on HFRCC at longcuring age becomes more remarkable.