掺煤矸石的水泥性能与颗粒群分布的关系研究

将不同细度的煤矸石、纯硅酸盐水泥分别按30％和70％的比例混合，测其胶砂流动度、净浆标准稠度用水量和3d、28d胶砂抗压强度。以宏观性能指标为z轴，水泥与煤矸石的中位径D50之差为x轴，水泥与煤矸石混合样的中位径D50为y轴，进行三维区域图分析。给出各项性能指标发展趋势与水泥、煤矸石的相对位置以及混合体系总体细度的相互关系。

Study on the relationship between the properties of coal gangue cement and its particle size

The coal gangue and cement samples that have different fineness were mixed in proportion of 30%and 70%. The mortar strength of coal gangue cement at age of 3d and 28d,mortar fluidity and the water requirement of normal consistency of the coal gangue-cement paste were tested. Origin software was used to make tri-dimension picture, in which macro property was enacted as z axes, the difference between D50 of cement and coal gangue enacted as x axes, D50 of coal gangue-cement mixing sample enacted as y axes. The relationship between the developmental trend of macro property and the difference between D50 of cement and coal gangue and D50 of coal gangue-cement mixing sample. The best particle size distribution matching of cement and coal gangue was given.