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金属矿山 ›› 2009, Vol. 39 ›› Issue (12): 151-153.

• 综合利用 • 上一篇    下一篇

用细粒铁尾矿制备细骨料混凝土的试验研究

郑永超,倪文,张旭芳,王海霞,杨菁华   

  1. 北京科技大学
  • 出版日期:2009-12-15 发布日期:2011-04-24
  • 基金资助:

    “十一五”国家科技支撑计划项目(编号:2006BAC21B03)。

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

Zheng Yongchao,Ni Wen,Zhang Xufang,Wang Haixia,Yang Jinghua     

  1. University of Science and Technology Beijing
  • Online:2009-12-15 Published:2011-04-24

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。  

关键词: 细粒铁尾矿, 分级, 热活化, 细骨料混凝土, 抗压强度

Abstract: 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.

Key words: Fine iron tailing, Classification, Thermal Activation, Fine aggregate concrete, Pressure resistance intensity