Research progress and application of iron tailings as UHPC aggregate

With the advancement of environmental protection and sustainable development of resources, the comprehensive utilization of iron tailings has gradually become a research hotspot. As a kind of solid waste, the application of iron tailings in ultra-high-performance concrete (UHPC) shows great potential. This paper systematically reviews the application status of iron tailings in UHPC, including the modification methods of material properties, the research conclusions and research progress of durability and mechanical properties, and the application cases in practical engineering. By summarizing the research results at home and abroad, the existing technical challenges are put forward, and the future research direction is prospected, which provides a scientific basis for the efficient utilization of iron tailings.