分选粉煤灰和磨细粉煤灰的比较研究

Comparison and study of separated fly ash and ground fly ash

粉煤灰在大体积混凝土中被广泛的使用，一般来讲，分选粉煤灰生产成本高，利用率低。我们不能单纯的追求产品的局部性能，应该从经济、资源利用率及产品性价比去确定所需的工程产品。本文从分选、磨细粉煤灰的生产、自身特性及掺入粉煤灰后混凝土的性能对比出发，简要介绍了分选、磨细粉煤灰的区别，可供工程建设中确定使用粉煤灰时借鉴参考。

Fly ash is used widely in the mass concrete. Generally, the separated fly ash needs high cost with low using ratio. We should choose the engineering product according to economy, resources using ratio and cost, instead of local function. The paper briefly introduces the difference between separated fly ash and ground fly ash after comparing their production, property, and concrete property mixed with fly ash, which can provide reference for selection of the fly - ash in project construction.