磨细粉煤灰与分选细粉煤灰的性能对比研究  

Experimental Study of Comparison of Ground Fly Ash Performance with Original Fine Fly Ash'S

作　　者：孙涛[1] 苏达根[1] 初昆明[1] 程伟[1] 唐婵娟[1] 

机构地区：[1]华南理工大学特种功能材料及其制备新技术教育部重点实验室,广州510640

出　　处：《粉煤灰》2006年第3期28-30,共3页Coal Ash China

摘　　要：本文研究了比表面积相近的由分选粗灰粉磨而成的磨细粉煤灰与分选细粉煤灰的颗粒形貌及水泥胶砂性能。研究结果表明,磨细粉煤灰圆珠状颗粒较少,且表面较为粗糙,在相同水胶比的条件下,其水泥胶砂流动度较小;在相同水泥胶砂流动度的条件下,磨细粉煤灰配制的水泥胶砂28d及早期强度较低,但随着龄期的增长,其差距逐步缩小,至60d时,掺磨细粉煤灰的水泥胶砂强度可超过掺分选细粉煤灰的水泥胶砂强度。In this paper, we mainly study the influence of the cement mortar performance caused by the separating fly ash and the size reduction fly ash, besides, we also study the different fly ash＇s figure. The results show that the size reduction fly ash which has lesser orbicular granule and granule surface is unshaped, when the w/c is same it＇ s cement mortar fluidity is lesser. When the fluidity is same, the size reduction fly ash＇ s 28d and early strength is lower, but with the time going, the gap reduce more and more. When the time go on 60d, the size reduction fly ash＇ s cement mortar strength exceed the separating fly ash＇ s cement mortar strength.

关 键 词：粉煤灰 分选 磨细 强度 流动度 

分 类 号：X705[环境科学与工程—环境工程]