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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%。
Using gypsum instead of cement as cementitious material, steel slag and slag as admixture, using orthogonal experimental design method, the gypsum, water-cement ratio, water reducing agent under the influence of three factors and four levels, Strength and flexural strength and softening coefficient were analyzed. The empirical formula based on compressive strength, flexural strength and softening coefficient was established by multivariate linear regression analysis. The calculated results of the compressive strength formula and the measured The value is compared. The results show that gypsum is the main factor that affects the compressive strength, flexural strength and softening coefficient of the composite block, followed by the water-binder ratio, with the least influence of the water reducer. Through analysis, the optimum level is: 60% of gypsum, 0.4 of water and plastic, 1.1% of water reducer.