高強度コンクリートにおけるフライアッシュの強度寄与効果
2005 年 70 巻 587 号 p. 1-6
詳細
2005 年 70 巻 587 号 p. 1-6
The influences of fly ash property, mixture proportion and different curing method on strength efficiency of fly ash in high-strength concrete are investigated in this study. The strength efficiency of fly ash, k, is pigeonholed as Portland cement-fly ash mass ratio. Under standard-curing, k increases with time, and bigger specific surface area of fly ash produced-by the same plant, higher the long-term strength efficiency, k under sealed-curing or atmospheric-exposure is lower than underwater-curing. Under atmospheric-exposure from the age of 7 days, k is around 0.8 against under standard-curing at the age of 91 days, 0.5 at the age of 365 days.
