水热条件下化学激发低等级粉煤灰活性的研究

【摘要】 低等级粉煤灰的早期及28d活性。在用本研究方法处理的粉煤灰中加入少量减水剂可制备高品质、高掺量、低成本水泥混合材,其掺量为40%、50%、60%时,可分别配制52.5、42.5、32.5级粉煤灰水泥,并能增加水泥石的致密度,降低孔径和孔隙率。更多还原

【Abstract】 We adopted calcium lime and phosphatic gypsum as the main chemical excitant.The mixture is heated and ground mechanically after soaked with water.It can raise the early and28d activity of low level fly ash obviously.By using of this treatment to fly ash the cement can be produced at low cost with high performance and loadage.The52.5, 42.5, 32.5fly ash cement can be produced when the loadage is40%, 50%, 60%respectively.Also it can raise the density meanwhile the di mension and rate of pore is decreased.Key wods:low level fly ash;chemical excitation;mechanical grind更多还原