An analysis was made of how sample's size affects the drying behavior of ultra-low cement high-alumina refractory castables. Mass loss data of different-sized samples, Obtained through thermogravimetric test conducted from room temperature to 800℃, revealed that the sample's thermal and drying profiles as well as the occurrence of explosive spalling were strongly affected by the specimens' dimensions. The implications of these factors in industrial applications were also discussed.

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