Experimental research on the utilization of gold mine tailings in magnesium potassium phosphate cement
文献类型：期刊论文
| 作者 | Zhu, Yanjiao; Wang, Zhen; Li, Zhifeng; Yu, Haibin |
| 刊名 | JOURNAL OF BUILDING ENGINEERING
 |
| 出版日期 | 2022 |
| 卷号 | 45 |
| 关键词 | FLY-ASH WATER STABILITY PERFORMANCE RESISTANCE STRENGTH REPAIR |
| 英文摘要 | Gold mine tailings (GT) are fine-grained ore processing wastes with a high variety of minerals and metals. Storing large amounts of GT in impoundments results in a waste of resources and in several cases environmental pollution. Magnesium potassium phosphate cement (MKPC) is green-sustainable cement made by magnesia (MgO, M) and KH2PO4, which can be used to effectively immobilize radioactive and hazardous wastes elements through mineralization and microencapsulation. This paper aimed at the utilization of GT in MKPC.GT was incorporated into MKPC through two different pathways, either partially replacing M or the binder (both M and KH2PO4). The influences of GT on MKPC were evaluated through workability, compressive strength, and microstructure. It was found that the partial replacement of M by GT can result in better workability, denser microstructure and higher late-stage compressive strength. The incorporation of GT generates new types of hydrates in the structure. The compressive strength was improved by a factor of 114.94% when an additional 10% M was replaced by GT; when the displacement of GT was 30%, it yielded a compressive strength approaching the basic group. Therefore, the partial replacement of M with GT was suitable to incorporate GT into MKPC in order to achieve the utilization of GT, reduce the cost and improve the mechanical properties of MKPC. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21247]  |
| 专题 | 2021专题_期刊论文 2022专题_期刊论文 |
| 作者单位 | 1.Li, ZF (corresponding author), Jiangxi Univ Sci & Technol, Sch Mat Sci & Engn, Ganzhou 341000, Peoples R China. 2.Yu, HB (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhu, Yanjiao,Wang, Zhen,Li, Zhifeng,et al. Experimental research on the utilization of gold mine tailings in magnesium potassium phosphate cement[J]. JOURNAL OF BUILDING ENGINEERING,2022,45. |
| APA | Zhu, Yanjiao,Wang, Zhen,Li, Zhifeng,&Yu, Haibin.(2022).Experimental research on the utilization of gold mine tailings in magnesium potassium phosphate cement.JOURNAL OF BUILDING ENGINEERING,45. |
| MLA | Zhu, Yanjiao,et al."Experimental research on the utilization of gold mine tailings in magnesium potassium phosphate cement".JOURNAL OF BUILDING ENGINEERING 45(2022). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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