粉煤灰粒度组成对烧结空心制品泥料可塑性的影响  

Effect of fly ash particle size distribution on plasticity of mixed pug for sintered porous product

作　　者：杨源[1] 袁广亮[1] 薛群虎[1] 

机构地区：[1]西安建筑科技大学,省部共建西部建筑科技重点实验室培育基地,陕西西安710055

出　　处：《新型建筑材料》2008年第2期26-28,共3页New Building Materials

基　　金：国家科技支撑计划资助项目(子课题编号2006BAF02A29-C)

摘　　要：粉煤灰的颗粒组成、粒度分布是影响高掺量粉煤灰烧结空心制品坯料成型工艺的重要参数。对3个电厂粉煤灰的颗粒组成、粒度分布进行了研究,结果表明,混合泥料的可塑性与粉煤灰平均粒径的大小无关,受其中粗颗粒含量影响较大,而与粉煤灰中DM与D50差值有关,且与细颗粒(5～2μm)和黏粒(<5μm)含量的大小密切相关,DM与D50差值愈小,细颗粒、黏粒含量愈大,混合泥料的可塑性越好。Fly ash grain composition,particle size distrihutinn are the important process parameters that effect the molding of body stock of high content fly ash sintered porous product. Study is made on grain composition, size distribution of fly ash from three power plants. The result shows that the plasticity of mixed pug has no relation to average particle size of fly ash and the coutent of medial and coarse particles has great effect on it, it has relationship with difference value between DM and D50, and it has close relationship with content of fine grain （5～2μm） and sticky particle（〈5 μm）,the smaller the difference value between DM and D50,the higher the content of fine grain and sticky particles and the better the plasticity of mixed pug.

关 键 词：粉煤灰 颗粒组成 粒度分布 烧结空心制品 

分 类 号：TU522.19[建筑科学—建筑技术科学]