フライアッシュを使用したセメントペーストの水和反応率およびモルタルの強度発現

抄録

The reaction rates of C₃S, C₂S and fly ash were examined by proposed XRD method to investigate the strength developing mechanism of fly ash concrete. The strength development of fly ash mortar was examined by specimens and estimated with the reaction rates of C₃S, C₂S and fly ash by proposed method in this paper. The following observations are made: (1) the larger of surface area of cement, the more of hydration degrees; (2) the pozzolanic reaction degree of fly ash correlates with the calcium hydroxide, is approximately in proportion to the account of calcium hydroxide, and influenced by the liquation of calcium hydroxide; (3) when adding fly ash, the hydration of C₂S appears to be retarded, though it has little apparently effect on the hydration of C₃S.