根据粉煤灰激活原理,采用不同的措施对其进行激活,以结合料7 d和28 d抗压强度为评价指标对不同的方法进行比较。研究表明:粉煤灰的活性是影响结合料强度的主要因素,活性低导致强度降低;复合激活的效果比单一激活要好,推荐采用复合激活提高低活性粉煤灰的活性;碳酸钠能显著提高粉煤灰的活性,采用NC外掺剂复合激活低活性粉煤灰是一种有效的方法。 According to the activation principle of fly ash, different measures were used to activate it. Comparing different methods with the compressive strength of 7 d and 28 d as the evaluation index. The results showed that the activity of fly ash was the main factor affecting the strength of the binder, the activity was low, which led to the decrease of strength. The composite activation was better than the single activation, and the composite activation was recommended to improve the activity of low activity fly ash. Fly ash activity, the use of NC admixture complex activation of low activity fly ash is an effective method.