磨细粉煤灰在水泥浆体中的活性分析

Activity analysis of ground fly ash in cement paste

试验对不同粉磨时间得到的磨细粉煤灰进行性能表征,并对成型掺有磨细粉煤灰水泥浆试块进行力学性能测试和活性分析,研究不同粉磨时间的磨细粉煤灰对水泥浆体强度的影响规律。研究结果表明:随着粉磨时间的增加粉煤灰的比表面积增大粒径减小,火山灰活性增强从而增加了其在水泥浆体中的反应程度,使粉煤灰水泥浆体表现出更高的强度。

The performance of ground fly ash obtained from different grinding time was characterized,and the mechanical properties and activity of cement paste with ground fly ash were tested and analyzed,and the effect of ground fly ash with different grinding time on the strength of cement paste was studied.The results show that with the increase of grinding time,the specific surface area of fly ash increases,the particle size decreases,the pozzolanic activity increases and the reaction degree in the cement paste increases,which makes the fly ash cement paste show higher strength.