Apparent Activation Energy of Cement-based composite with Ground Granulated Blastfurnace Slag using a Calorimeter

초록

The Apparent Activation Energy (Ea) predicts the compressive strength of cement-based composite using maturity method. In the present study, by considering the change of Ea using equivalent age formula, the compressive strength model of Ground Granulated Blast-furnace Slag (GGBFS) mixed paste was calculated through a calorimeter. The experiment of different variable ratio (0-80%) GGBFS paste specimens was carried out at 10 to 30°C and 0.4 to 0.5 water/binder (W/B) . The results revealed that as the GGBFS substitution ratio are increased and W/B ratio decreased, the Ea has increased. The experimental data are corroborated with theoretical results.