【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。更多还原

【Abstract】 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.更多还原