摘要
Abstract
In the article,ultra-fine composite admixtures were prepared using fly ash and mineral powder,and the mineral composition,chemical composition,microstructure,and particle size distribution of the raw materials were studied.The effects of mixed grinding,first grinding the fly ash and then mixing with mineral powder on the ultra-fine composite admixtures were compared.Research has found that when the ratio of fly ash raw ash to mineral powder is 48∶52,when the two are mixed and ground for 20 minutes,the highest activity index of the ultra-fine composite admixture after 28 days can reach 108.7％,which is better than the method of first grinding fly ash raw ash for 15 minutes before mixing with mineral powder.关键词
粉煤灰/矿粉/超细复合掺合料/球磨Key words
Fly ash/Mineral powder/Superfine composite admixture/Ball-milling分类
建筑与水利
