摘   要：用石膏部分替代水泥作为胶凝材料，钢渣、矿渣作为掺合料，采用正交试验设计方法，将石膏、水胶比、减水剂在三因素四水平的影响下，对砌块的抗压强度、抗折强度及软化系数进行了极差和方差分析；采用多元线性回归分析方法建立基于抗压强度、抗折强度及软化系数的经验公式，并利用建立的抗压经验公式计算结果与实测值进行了对比。结果表明，石膏是影响复合砌块抗压强度、抗折强度及软化系数的主要因素，水胶比次之，减水剂影响程度最小。通过分析得出最佳水平为：石膏用量60%，水胶比0.4，减水剂1.1%。

Abstract: Gypsum partly replacing cement as cementitious material, steel slag and slag as admixture, design method is applied by orthogonal experiment, compressive strength of block, flexural strength and softening coefficient is analyzed by range and variance under the influence on three factors and four levels of gypsum, water-cement ratio and water reducing agent. Multiple linear regression analysis method is established by based on empirical formula of compressive strength, flexural strength and softening coefficient, and calculation results by using empirical formula is compared with measured values. The results show that, gypsum is the main factors of affecting compressive strength, flexural strength and softening coefficients of gypsum composite block, followed factor is water-cement ratio, the minimum effecting degree is water reducer. By analyzing the optimum level is 60% amount of gypsum, 0.4 amount of water-cement ratio and 1.1% amout is superplasticizer.