磨细粉煤灰的活性与其粒度分布特征参数的关系

Relation between the Activity of Ground Fly Ash and the Parameter of Particle Size Distribution

研究了粉煤灰在机械磨细过程中粒度分布的变化规律,分析了磨细灰的粒度分布特征对其活性的影响。结果表明,磨细灰的强度与粉煤灰的特征粒径De、分布宽度Nx之间具有很好的线性关系,其3d、28d抗压强度随着特征粒径变小、分布宽度变大而增大.

The change in particle size distribution of fly ash in grinding process and its influence on the activity of fly ash are presented in this paper. The result showed that there was good linear relation between the 3d, 28d compressive strength of fly ash cement and the position parameter De, the coefficient of span Nx of fly ash. The 3d,28d compressive strength increased with De decreasing, or Nx increasing.