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粉煤灰具有潜在的活性,作为水泥混合材和混凝土掺合料代替熟料和水泥,不仅节约资源和能源、减少CO2排放,还能改善混凝土的性能。近年来人们发现,通过振动粉磨,在机械应力的激发下,当粉煤灰磨细到7μm左右时(超细粉煤灰),作为混合材时表现出了一些非常优异的性能。文章介绍了超细粉煤灰的一些研究进展,主要从近些年来人们对超细粉煤灰的制取,以及超细粉煤灰作为水泥混合材使用时表现出来的优异性能进行介绍,进而探讨该领域的发展前景。
Fly ash has the potential to be used as a cement admixture and concrete admixture instead of clinker and cement, not only saving resources and energy, reducing CO2 emissions, but also improve the performance of concrete. In recent years, it has been found that by vibration grinding, under the excitation of mechanical stress, when the fly ash is ground to about 7 μm (ultrafine fly ash), it shows some very excellent properties as a hybrid material. This paper introduces some research progress of ultrafine fly ash, mainly from the introduction of ultrafine fly ash in the past few years, as well as superfine fly ash used as a cement admixture showed excellent performance, and then Discuss the development prospects in this area.