【摘要】 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。更多还原

【Abstract】 To improve the activity of fly ash and make it to reach the standard of road performances is great significant to the rational use of fly ash.In this paper,different chemical activations of fly ash are studied which are evaluated with the 7 d and 28 d unconfined compressive strengths of fly ash binder based on the principle of chemical activation method.The results show that: the activity of fly ash is the main factor to affect the strength of various types of fly ash binder and the low activity of fly ash reduced material strength;Compound activation is better than a single activation,which are recommended to used for improving the activity of fly ash with low activity;The addition of NC additive significantly increases the activity of fly ash,and use of NC additive for improving the activity of fly ash with low activity is an economic and effective method.更多还原