本刊讯水泥—石灰—砂加气混凝土小组近两年来,开展了多项研究工作,现将一九七八年的研究情况简报如下,供参考。(一)合理配方的调整及工艺参数的确定原水泥—石灰—砂加气混凝土基本配方为,水泥:石灰:砂=7:33:60,即钙质材料占总干物料量的40%。配方中不采用外加剂,其中水泥为500号普通硅酸盐水泥,石灰为中速石灰。以上结果主要 In the past two years, the cement-lime-sand aerated concrete group has carried out a number of research work. The current status of the 1978 research report is reported below for reference. (I) Adjustment of rational formula and determination of process parameters The basic formula of cement-lime-sand aerated concrete is: cement: lime:sand=7:33:60, ie, calcareous material accounts for 40% of the total dry matter. No additives are used in the formula, of which cement is No. 500 ordinary portland cement and lime is medium-speed lime. The above result is mainly