EFFECT OF ALKANOLAMINE ON EARLY HYDRATION REACTION OF FLY ASH CEMENT

Abstract

In this study, it investigated that the effects of three types alkanolamine （TIPA, DEIPA, MDEA） on the early hydration reaction of FA cement, in order to development of FA cement that improved early strength. As a result, loss on ignition and heat of hydration was increase in FA cements with all alkanolamine, and reaction ratio of C₄AF in clinker mineral was greatly increased. However, it was confirmed that the influence of the alkanolamine on the hydration reaction of C₃S and FA was not almost. In addition, the formation of AFm as a hydration product of FA cement with alkanolamine is faster than no addition. Early strength of FA cement is expected to increase, beacuse of cement of hydration reaction in FA cement with three types alkanolamine is increased, and hydration reaction of FA is not inhibited.