摘要：为了研究粒径分布对水泥石结构与性能的影响,通过测定多组粒径分布不同的矿粉在流动度相同情况下的需水量,得到矿粉不同粒径分布所对应的不同的堆积密度,推导了浆体中连续粒径粉体的堆积密度公式。用该公式计算上述不同粒径分布的矿粉浆体的堆积密度及需水量,计算结果与试验值基本吻合。说明该公式可以用来模拟诸如水泥、磨细矿渣、粉煤灰等胶凝材料细颗粒的堆积密度。

关键词：矿粉浆体；需水量；连续粒径分布；颗粒堆积密度

Abstract：In order to explore the effects of particls size distribution on structure and properties of cement paste,based on measuring the water requirements of slag with different size distributions on the same fluidity degree,it was revealed the that different size distributions determine different packing densities,and the formula of packing density with continuous particle size distribution for cement paste was developed.By this formula,the packing density of the different size distributions of slag and its water requirements were calculated and found to be the same with the testing results.The formula could simulate the packing density of the blend materials such as cement,fine-slag,and fly ashes.

Keywords：granulated blast furnace slag paste;water requirements;continuous particle size distribution;packing density of particle