多种掺合料颗粒群分布与水泥基复合体系强度关系研究

The Relationship Research on Particles Cradation of Admixtures and Strength of Multielement Composite Cement-based Materials

利用磨细钢渣粉替代矿渣,并掺以粉煤灰和硅灰,通过各成份之间合理的颗粒匹配达到固体的最密实状态,以获得高强的水泥基胶凝材料。依据粒度仪测出不同比例混合后混合材的颗粒群分布,通过MATLAB绘制出了满足Dinger-Funk方程紧密堆积状态下的颗粒群分布曲线,利用数值方法分析了混合料的颗粒群分布与DingerFunk方程颗粒群分布的拟合度,并测定了浆体的强度。试验结果表明,混合掺合料的实际颗粒群分布与紧密堆积状态颗粒群分布拟合度较高时,相应浆体的强度较高,可为配制高强的水泥基材料提供参考。

The use of steel slag instead of slag powder in addition to fly ash and silica fume is proposed,the absolute densest solid state is achieved through particle matching between the various components of a mixture to achieve the highest density state.According to particle size distributions measured by granulometer,the actual particle size distribution curves based the Dinger-Funk equation of the closest-packing model with MATLAB are draw,and the fitting degrees of the particle size distribution of composite admixture between the actual situation and Dinger-Funk equation with MATLAB are calculated using the numerical method.The strength of neat paste is measured.The experimental results shows that the strength of neat paste is higher when the degrees of fitting are higher between the two particle size distributions.The numerical analysis method can provide the theoretical principle that can be scientifically applied to the preparation of high-performance cement-based cementitious material.