The extensive global exploitation of mineral resources has resulted in significant accumulation of tailings sand, creating substantial environmental and land-use challenges. Currently, the utilization of tailings sand as concrete materials has emerged as a promising solution to this issue. Take the example of iron, gold and molybdenum tailings sands, which are the main sources of solid waste in Shaanxi, China. This paper comprehensively examines the basic physical and chemical properties of iron, gold, and molybdenum tailings sand and discusses their effects on the workability, mechanical behavior, and durability of concrete. Meanwhile, the effects of them on concrete hydration and microstructure are analyzed in a microscopic overview. The scope of their applications is discussed, and relevant recommendations are made for their shortcomings. The aim is to provide new ideas for the utilization of tailings sand solid waste and construction sand substitutes.
Yuhao Jiao, Jianping Tan, Wei Li, Puxin Yang, Wenyuan Ren — College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China
Chen Chen — Xi'an Engineering Investigation & Design Research Institute of China National Nonferrous Metals Industry Co. Ltd., Shaanxi 710001, China
PDF Viewer
Preview is limited to the first 3 pages. Sign in to access the full PDF.
