粉煤灰-矿粉-水泥胶凝体系优化设计的试验研究

Experimental study on optimum design of fly ash-slag-cement cementitious system

为优化粉煤灰-矿粉-水泥胶凝体系并探讨粉煤灰和矿粉在混凝土中的作用机理,实验研究了在混凝土中水泥用量不变情况下,掺入不同比例的粉煤灰、矿粉的强度与和易性,并对比添加激发剂试验结果,发现粉煤灰-矿粉质量比按1∶1∽11.5双掺替代70％水泥并添加5％的硫酸钠激发剂得到的水泥胶凝体系性能最好.

This paper studied the optimum design of fly ash-slag-cement cementitious system and discussed the mechanism of fly ash and slag in concrete. The experiment studied the strength and workability of concrete mixed with different proportion of fly ash and slag when the cement dosage results, it turned out that the concrete mixed with large amount anhydrous sodium sulphate could get the best performance. remain unchanged. Comparing the activator test of fly ash-slag by proportion of 1：1 to 1：1.5 and 5% anhydrous sodium sulphate could get the best performance.