不同掺量粉煤灰对水泥性能的影响

研究了不同掺量粉煤灰对水泥性能的影响。结果表明,随着粉煤灰掺量的增大,水泥的凝结时间延长,3d和7d抗压强度有不同程度的降低;熟料矿物的水化速率提高,但水泥-粉煤灰体系的水化速率降低,硬化水泥浆体中大孔数量减少、微孔数量增加。

Effect of the Different Blending Amount of Fly -ash on the Performance of Cement

Here is a research on the effect of the different blen di ng amount of fly-ash on the performance of cement. Its result indicates that, with the increase of the blending amount of fly-ash, the set-time of cement is p rolonged, the compression strength of 3 d and 4 d, more or less, reduced, and th e rate of hydration of mineral clinker improved. But the hydration rate of cemen t fly-ash system is reduced, the number of the large pores in the hardened cemen t paste decreased, and that of the micropores increased.