水泥颗粒群粒度分布宽度的表征及其应用研究

A Study on Characterization and Application of Particle Size Distributional Width of Cement Particle Group

用分形理论阐述了将水泥颗粒群粒度分布的分形维数作为定量表征其粒度分布宽度的正确性和可行性,测量了16种水泥颗粒群的粒度重量累积分布,在双对数条件下,水泥颗粒群的粒度重量累积含量与粒径之间呈直线关系,表明水泥颗粒群粒度分布结构具有分形特征,其分形维数可以定量表征水泥颗粒群粒度分布宽度;研究了水泥颗粒群粒度分布宽度与其空隙率的关系,结果表明,随着水泥颗粒群粒度分布宽度的增加,其空隙率减小,二者呈负相关。

The correctness and feasibility of using particle size distribution fractal dimension to characterize the width of particle size of cement particle group was proved by fractal theory. The particle size mass cumulative frequency of 16 kinds of cement particle group was measured. At the log-log condition, the correlation between mass cumulative frequency and particle size of cement particle group was linearly. That is, the particle size distribution was fractal characterization and particle size distributional width of cement particle group could be characterized by fractal dimension. The correlation between the voidage and particle size distributional width of cement particle group had been investigated too. The result shows that the voidage of cement particle group decrease with the increase of the width of particle size of cement particle group. They are negative interrelation.