X線回折/リートベルト法による石炭ガス化スラグの水和反応解析

抄録

For the purpose of evaluating the reactivity of coal gasification slag sand (CGS), a cement paste was prepared by partially replacing alite (C₃S) with CGS, and the reaction rate of C₃S and CGS was evaluated by XRD/Rietveld analysis. As a result, the use of CGS improved the hydration degree of C₃S and the tendency of CH consumption during long-term aging. The CGS hydration degree was calculated by setting the sintering temperature of the hydrated sample to 1000 - 1100 ℃ according to the quality of the CGS, and calculating only the minerals along the crystal product during CGS sintering. It was confirmed that the results of Mid-FTIR also suggested that the use of CGS produced C-S-H with a longer chain length than the hydration product of simple C₃S.