摘要
本文分析了外加剂在粉煤灰免烧砖生产中所起的作用。试验结果表明：采用复合外加剂能有效地提高粉煤灰免烧砖的强度，能使粉煤灰砖28天后的抗压强度达到15MPa。复合外加剂中应包含激发剂、早强剂和减水剂。复合外加剂对粉煤灰后增强的机理也在文中作了探讨。
This article analyses the runction of admixture on producing non-fired bricks of fly ash.The experimental results show tbat the compound admixture can effectively improve the strength of fly ash bricks and bring the compressive strength of fly ash bricks to 15 MPa after 28 days. The compound achirture should contain activator, accelerator and water-reducer. The strengthening mechanism of ad mixture on fly ash bricks was discussed in this paper
