用细粒铁尾矿制备细骨料混凝土的试验研究  

Test Research on Preparation of Fine Aggregate Concrete with Fine Iron Tailings

作　　者：郑永超[1] 倪文[1] 张旭芳[1] 王海霞[1] 杨菁华[1] 

机构地区：[1]北京科技大学

出　　处：《金属矿山》2009年第12期151-153,共3页Metal Mine

基　　金："十一五"国家科技支撑计划项目(编号:2006BAC21B03)。

摘　　要：将某-0.074 mm占74.5%的细粒铁尾矿按0.045 mm分级,通过热活化处理改善-0.045 mm尾矿的反应活性,并将其制备成复合胶凝材料,然后与+0.045 mm尾矿制备成细骨料混凝土。制品尾矿掺量达到70%,28 d抗压强度达到99 MPa。By classifying fine iron tailings with-0.074 mm of 74.5% to be-0.045 mm,the thermal activation is adopted to improve the reaction activity of-0.045mm iron tailings which are prepared to be the compound Cementitious Materials.This material is mixed with ＋0.045 mm tailings to make fine aggregate concrete.There are 70% of tailings in preparation and the compression strength of up to 99 MPa at 28 d.

关 键 词：细粒铁尾矿 分级 热活化 细骨料混凝土 抗压强度 

分 类 号：TU522.19[建筑科学—建筑技术科学] TU528.042