To produce heat-resistant concrete working at hight temperature, the aggregates which are heat-resistant, unmelted, un destroyed and heat-stable should be used. Chamotte and waste materials are effective materials as aggregates in heat-resistant concrete. With experimental planning method, the theme has determined the composition of the best mixed aggregates, with consecutive particles (Dmax = 10 and 20 mm) and caculated values a = 0.15 to 0.30 and q = 0.52 to 0.59.