The DTA pattern of FA and CaCO3 mix as shown in Fig. 1
shows an endothermic peak at 820 8C owing to the decomposition
of CaCO3. The second peak at 1160 8C is exothermic
peak suggesting the formation of new phase. Firing temperature
range used to synthesis belite clinker is therefore obtained from
the DTA/TG thermograph as shown in Fig. 1.