本文对比了分选粉煤灰与磨细粉煤灰应用于混凝土中所产生的性能差异,试验结果表明:与分选粉煤灰相比,磨细粉煤灰的细度较细,活性指数较高,但烧失量、需水量比较高;在磨细粉煤灰混凝土中应用时含气量、坍落度和坍落度经时损失等工作性能明显弱于分选粉煤灰,但力学性能(7d、28d抗压强度)要优于分选粉煤灰。 In this paper, the performance differences between the classification of fly ash and ground fly ash in concrete are compared. The experimental results show that the fineness of ground fly ash is smaller than the classification of fly ash, the activity index But the loss on ignition and the water requirement are relatively high. The performance of the fly ash concrete used with gas content, slump and slump loss over time is obviously weaker than that of the sorted fly ash, but the mechanics Performance (7d, 28d compressive strength) is better than the separation of fly ash.