镁渣-粉煤灰-水泥复合胶凝材料的初步研究

The preliminary study on the composite binding material made from Magnesium slag-fly ashcement

以粉煤灰、镁渣等工业固体废弃物为原料,辅以适量的激发剂,制备成镁渣-粉煤灰-水泥复合胶凝材料,研究了镁渣的比表面积,镁渣/粉煤灰掺比对复合胶凝体系的凝结时间和力学性能的影响。研究表明,胶凝材料的强度随着镁渣的细度、镁渣比表面积的增大而增加,少量水泥能够有效地激发出钢渣-粉煤灰体系潜在的活性,单掺水泥的钢渣-粉煤灰体系最优配比为：钢渣/粉煤灰=5∶5,水泥掺量为15%,石膏为10%。

The composite binding materials can be made from magnesium slag, fly ash and cement by adding the proper amount of activator. The effects of different content and fineness of fly ash and magnesium slag on the strength of composite binding materials were studied. The results show that thepotential activity of matrix of composite binding materials was improved with the incorporation ofa spot of cement. The influence of fineness of magnesium slag can contribute notably to thestrength of magnesium slag-fly ash-cement composite binding materials. The magnesium slag isfiner, the strength is higher. The optimum mix ratio of composite binding materials was magne sium slag/fly ash=6:4. Cement content was 15% and plaster was 10%.