铁尾矿在沥青路面中的资源化利用研究进展与展望

Advances and Prospects on the Resource Recovery of Iron Tailings in Asphalt Pavement

铁尾矿的大量堆积,不仅浪费了宝贵的土地资源,还造成了严重的环境污染,与此同时,沥青路面建设需消耗大量天然资源,铁尾矿在沥青路面中的资源化利用可有效缓解这一矛盾。本文概述了不同地区的铁尾矿的物理化学特性及环境安全性,总结归纳了铁尾矿在沥青面层的路用性能、界面黏附性能以及微波加热自愈合性能方面的研究进展及难点,分析提炼了铁尾矿作为路面基层集料及补充胶凝材料的研究现状及关键技术,详细阐述了基于水化反应和聚合反应制备的铁尾矿基胶凝材料的活化工艺及反应机理,最后指出了铁尾矿在沥青路面应用中存在的问题及未来应深入研究的方向。

The massive accumulation of iron tailings not only wastes valuable land resources,but also causes serious environmental pollution.At the same time,the construction of asphalt pavement requires a large amount of natural resources.The resource utilization of iron tailings in asphalt pavement can effectively alleviate this contradiction.This article provides an overview of the physical and chemical properties and environmental safety of iron tailings in different regions.It summarizes the research progress and difficulties in the road performance,interface adhesion performance,and microwave heating self-healing performance of iron tailings in asphalt pavement layers.It analyzes and extracts the research status and key technologies of iron tailings as aggregate and supplementary cementitious materials for pavement base layers.It elaborates in detail on the activation process and reaction mechanism of preparing iron tailings based cementitious materials based on hydration and polymerization reactions.Finally,it points out the problems existing in the application of iron tailings in asphalt pavement and the directions that should be further studied in the future.