赤泥对粉煤灰激发作用的试验研究

Study on the activation of fly ash by using red mud

试验研究了赤泥对粉煤灰一水泥胶砂力学性能的影响。结果表明赤泥能有效激发粉煤灰的活性 ,使掺粉煤灰水泥砂浆的强度大幅度提高。赤泥最佳掺量为 3%～ 5 % ,与不掺赤泥的粉煤灰一水泥胶砂空白对比组相比 ,各龄期抗压、抗折强度增加了 2 0 %～ 40 % ,且后期强度增长更为明显 ,掺 40 %粉煤灰水泥胶砂强度在 2

This paper presents an experimental study on the effect of red mud on the strength of fly ash cement motars, red mud was added to cement mortars with 40% fly ash replacement,Significant increase of compressive strength and flexural strength (about 20%～40%) compared to the cement mortars was observed at early age.However,the strength in creasing at the later age was more remarkable than that of the early age.The proper content of red mud was 3%～5%.