机械粉磨对煤矸石-水泥体系颗粒群特征及力学性能的影响  

Effect of mechanical grinding on particle size distribution and strength of coal gangue-cement system

作　　者：顾炳伟[1] 王培铭[1] 熊少波[1] 

机构地区：[1]同济大学材料科学与工程学院

出　　处：《东南大学学报（自然科学版）》2005年第A01期167-171,共5页Journal of Southeast University：Natural Science Edition

摘　　要：采用了煤矸石单独粉磨后取代水泥、煤矸石与水泥混合后共同粉磨(先混后磨)、煤矸石与水泥分别单独粉磨后混合(先磨后混)(三者均按w(煤矸石):w(水泥)=30:70的比例)3种不同的机械粉磨方式研究粉磨对煤矸石-水泥体系的颗粒群特征以及力学性能的影响.研究结果表明:煤矸石单独粉磨掺入体系与煤矸石和水泥“先混后磨”,不同粉磨时间的混合体系的颗粒群具有相似的级配组合特征;煤矸石与水泥“先磨后混”形成的颗粒群特征不同于“先混后磨”;对于相同的粉磨时间,煤矸石与水泥“先混后磨”的粉磨制度优于“先磨后混”;不同的煤矸石-水泥体系的颗粒群特征对于体系的力学性能产生不同的影响.To study the effect of mechanical grinding on particle size distribution and strength of coal gangue-cement system different mechanical grinding schemes were adopted including： coal gangue ground independently to replace cement, coal gangue and cement mixed first then ground and coal gangue and cement ground independently then mixed （ the ratio between coal gangue and cement keeps 30 to 70）. The results show that for the first two schemes the mixed system possess similar particle size distribution after different time of grinding. The particle size distribution of the system from the last scheme is different. With same grinding time, the mixed-ground scheme is superior to the groundg-mixed one. Different particle size distribution in coal gangue-cement system lays different influence on the strength of coal gangue-cement system.

关 键 词：煤矸石 机械粉磨 颗粒群特征 力学性能 

分 类 号：TU522[建筑科学—建筑技术科学]