有机无机助磨剂对低品质粉煤灰的活性研究  

Research on the Activity of the Low-quality Fly Ash with Organic and Inorganic Grinding Aids

作　　者：张斌斌[1] 刘凯[1] 费爱艳 李东旭[1] 

机构地区：[1]南京工业大学材料科学与工程学院材料化学工程国家重点实验室,南京210009

出　　处：《材料导报》2013年第4期126-128,138,共4页Materials Reports

基　　金：国家重点基础研究发展计划(973)项目(2009CB623104)

摘　　要：研究了有机、无机的5种助磨剂对低品质粉煤灰的比表面积、颗粒分布及其物理性能的影响,探讨了其作用机理,运用现代测试分析方法对结果进行了分析。结果表明,单一助磨剂提高了粉煤灰的比表面积,优化了粉煤灰的颗粒分布,提高了水泥的3d、28d的力学强度,促进了水泥水化,粉煤灰掺量为30%时其活性指数可达到0.82,可实现粉煤灰的最大利用。Five kinds of grinding aids, including organic and inorganic, on the specific surface area, the particle size distribution and the physical properties of low-quality fly ash were studied, and the action mechanism was ex- plored. Results were analyzed by modern testing methods. The results show that a single grinding aids can improve the surface area of the fly ash, optimize the fly ash particle size distribution, enhance the 3 d and 28 d compressive strength, and promote cement hydration,with a 30% low-quality its activity can still reach 0. 82, achieving maximum utilization of fly ash.

关 键 词：粉煤灰 助磨剂 颗粒分布 活性激发 

分 类 号：TQ172.4[化学工程—水泥工业]