Utilization of Molybdenum Tailings in Concrete Manufacturing: A Review

被引：32
作者：
Gao, Shan [1 ,2 ]
Cui, Xiaowei [3 ]
Zhang, Sumei [4 ]
机构：
[1] Xijing Univ, Shaanxi Key Lab Safety & Durabil Concrete Struct, Xian 710123, Peoples R China
[2] Chongqing Univ, Postdoctoral Stn Civil Engn, Chongqing 400000, Peoples R China
[3] Shangluo Univ, Shaanxi Key Lab Comprehens Utilizat Tailings Reso, Shangluo 726000, Peoples R China
[4] Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China
来源：
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 01期
基金：
中国国家自然科学基金;
关键词：
molybdenum tailings; cement; mechanical properties; fine aggregates; concrete; GLASS-CERAMICS;
D O I：
10.3390/app10010138
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Dealing with mineral tailings is one of the most important topics for solving the environmental problems in the mining industry. Among the techniques converting stacked molybdenum tailings to reusable cleaner products, one of the most effective ones is to use molybdenum tailings in concrete productions. The physical properties including density, microscopic structure and finesse module, and chemical composition of molybdenum tailings are similar with those of natural sand. The radionuclide assessment of molybdenum tailing meets the requirements for using as structural materials. Therefore, Molybdenum tailing is suitable to be used as the replacement of cement and fine aggregates in mortar and concrete. Based on the results of strength and duration performance comparison, the usage of molybdenum tailing as a replacement of natural sand is a more feasible way than that of ground super-fine molybdenum tailings in cement binder. It is feasible to use molybdenum tailings as fine aggregate in the preparation of structural concrete. When the amount of ground super-fine molybdenum tailings replacing cement is less than 10%, it is beneficial to improve the freeze-thaw and carbonization resistance of the concrete.
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页数：9
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