石碴、电厂生物质燃料余灰复掺对水泥基材料性能影响的研究  

Research of Crushed Sand Mixed with Biomass Fuels Wastes on Effecting Properties of Cement—based Materials

作　　者：李清海[1] 王菲菲[1] 李清原[1] 周胜男[1] 

机构地区：[1]中国建筑材料科学研究总院绿色建筑材料国家重点试验室,北京100024

出　　处：《混凝土与水泥制品》2014年第6期10-12,共3页China Concrete and Cement Products

基　　金：国家科技支撑计划项目(2013BAJ10B03)

摘　　要：对石碴等质量取代40%河砂、电厂生物质燃料余灰取代部分水泥,通过压制成型的方法制备水泥基材料进行了研究,探索了在石碴掺量固定的前提下,同时掺加电厂生物质燃料余灰对水泥基材料强度、吸水率、抗冻融性能的影响规律。研究结果表明,在石碴取代40%天然河砂的前提下,水泥基材料的强度随水泥被电厂生物质燃料余灰取代量的逐渐增加而先增加后降低,吸水率则呈逐渐增大的变化趋势;在抗冻融性方面,一定掺量范围内,石碴、电厂生物质燃料余灰复掺制备的水泥基材料满足GB/T 50082-2009中D25抗冻等级指标要求,并对其机理进行了分析。According to the search of the crushed sand instead of 40%natural river sand and biomass fuels wastes in-stead of cement to prepare cement-based material by using the method of pressure molding, under the premise of fixed dosage of crushed sand, at the same time adding biomass fuels wastes, the effects on strength, water absorption and freez-ing-thaw cycle resistance of the cement-based material are explored. The results show that the strength of the cement-based material is first increases then decreases with the increase of the biomass fuels wastes dosage on the premise of crushed sand replacing 40% of the natural river sand, and the water absorption shows a trend of increase gradually changes. In a certain dosage range, the freezing-thaw cycle resistance of crushed sand and biomass fuels wastes cement-based materials can meet D25 frost resisting class indication in GB/T 50082-2009. Meanwhile, its mechanism is analyzed.

关 键 词：石碴 电厂生物质燃料余灰 水泥基材料 压制成型 强度 吸水率 抗冻融性 

分 类 号：TQ172.7[化学工程—水泥工业]