Influence of chemical mechanical coupling effect on iron ore tailings cementitious activity

被引：0
|
作者：
Piao C. [1 ]
Wang D. [1 ]
Zhang L. [2 ]
Wang C. [1 ]
Liu H. [1 ]
机构：
[1] School of Chemistry and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing
[2] Department of Civil Engineering, Tsinghua University, Beijing
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2016年 / 24卷 / 06期
关键词：
Activation mechanism; Activity index; Chemical mechanical coupling effect; Volcano activity;
D O I：
10.16058/j.issn.1005-0930.2016.06.003
中图分类号：
学科分类号：
摘要：
By using CaSO4·2H2O as activating agent, grinding 2.0 h, the iron ore tailing has volcano activity. When its content was 0.5%, activity index and flexural strength ratio of 7 d and 28 d were raised to maximum, therefore the cementitious activity of iron ore tailing was greatly stimulated. Meanwhile, the activation mechanism was studied by infrared spectroscopy and micro heat method, and the result indicated that under the coupling action of chemical and mechanical, the disordered materials of iron ore tailings powder was increased, and the secondary hydration phase of cement aluminum was promoted by adding the iron ore tailings powder, then the cementitious activity was significantly improved. © 2016, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
引用
收藏
页码：1100 / 1109
页数：9
相关论文
共 17 条
  • [1] Li J., Ding Y., Lu W., The disposal of iron tailings and its advancement of utilization as resource, Fly Ash Comprehensive Utilization, 6, pp. 52-56, (2012)
  • [2] Huang Y., Utilization status and outlook of China's iron ore tailings, Resoures and Industries, 15, 3, pp. 40-44, (2013)
  • [3] Dong F., Study on comprehensive utilization of iron tailings, Mining Research and Development, 33, 1, pp. 59-61, (2013)
  • [4] Zhang S., Xue S., Liu X., Et al., Current situation and comprehensive utilization of iron ore tailing resource, Journal of Mining Science, 42, 4, pp. 403-408, (2006)
  • [5] Huang X.Y., Ranade R., Ni W., Et al., Development of green engineered cementitious composites using iron ore tailings as aggregates, Construction and Building Materials, 44, pp. 757-764, (2013)
  • [6] Yang N., Making full use of resources and development of new cementitious materials, Journal of Building Materials, 1, 1, pp. 19-25, (1998)
  • [7] Ryou J., Improvement on reactivity of cementitious waste materials by mechano-chemical activation, Materials Letters, 58, pp. 903-906, (2004)
  • [8] Wu Q., Zhang S., Zhou Y., The research and development of mechanochemistry in inorganic materials preparation, Materials Science and Engineering, 19, 1, pp. 137-142, (2001)
  • [9] Yang N., Zeng Y., Research topics of chemical activating cementitious materials (Part one)-The necessity and feasibility of the research and development of chemical activating cementitious material(I), Development Guide of Building Materials, 1, pp. 44-47, (2006)
  • [10] Yang N., Zeng Y., Research topics of chemical activating cementitious materials (Part two)-The necessity and feasibility of the research and development of chemical activating cementitious material(II), Development Guide of Building Materials, 2, pp. 42-46, (2006)
12