本文研究了以硅微粉和球粘土作为复合胶凝材料,替代部分普通硅酸盐水泥,用来提高耐热混凝土的耐久性和高温稳定性。实验结果表明:加入适量的硅微粉替代普通硅酸盐水泥,可减少用水量29%,1200℃烧后耐压强度提高86%;在此基础上,加入适量球粘土替代水泥,可以达到更好的流动性。 In this paper, silica powder and ball clay as a composite cementitious material to replace part of ordinary portland cement, used to improve heat-resistant concrete durability and high temperature stability. The experimental results show that adding appropriate amount of silica micropowder instead of ordinary portland cement can reduce the water consumption by 29% and increase the compressive strength by 86% after burning at 1200 ℃. On the basis of this, adding appropriate amount of ball clay instead of cement can achieve better results Liquidity