Chemical composition and physical property related to the quality of fly ash were selected as the characteristic indexes of the cluster analysis.

• 选择与粉煤灰品质有关的化学成分和物理性质为模糊聚类分析的特征指标 ；以活性特征为目标 ；通过计算获得了较科学的分类结果 ；并用美国 TC FAB-67标准中灰渣火山灰活性指数测定方法对分类结果进行了验证 .