钢渣粉在水泥基材料中应用研究综述

目前,钢渣废弃物堆存造成了严重的环境污染和资源浪费,钢渣资源化利用迫在眉睫。将钢渣粉应用于水泥基材料中,不仅可以提高固废资源利用率,还可以减少天然资源的消耗,替代水泥降低CO₂的排放。本文介绍了钢渣的物理化学特性、胶凝性能和活性激发方式,综述了钢渣粉在混凝土复合胶凝材料、全固废胶凝材料、充填胶结材料、干混砂浆四个领域的资源化利用现状。从凝结时间、和易性、力学性能、耐久性和体积稳定性等方面分析了钢渣粉对水泥基材料性能的影响。掺入适量的钢渣粉,可有效改善水泥基材料的性能,特别是在调控拌合物和易性与提升耐久性方面有显著优势。最后,提出了将钢渣粉应用在水泥基材料中存在的问题和未来的研究发展方向。

Review on Application of Steel Slag Powder in Cement-Based Materials

At present, the stacking of steel slag has caused serious environmental pollution and resource waste, so the utilization of steel slag resources is imminent. Using steel slag powder in cement-based materials can not only improve the utilization rate of solid waste resources, but also reduce the consumption of natural resources and reduce CO₂ emission by acting as a substitute for cement. The physical and chemical properties, cementitious properties and active excitation modes of steel slag were introduced. The resource utilization of steel slag powder in concrete composite cementitious materials, solid waste cementitious materials, filling cementitious materials and dry mixed mortar was reviewed. The effect of steel slag powder on the properties of cement-based material was analyzed from the aspects of setting time, workability, mechanical properties, durability and volume stability. Adding proper amount of steel slag powder effectively improves the properties of cement-based materials, especially in regulating the workability of mixes and enhancing the durability. Finally, the existing problems of the application of steel slag powder in cement-based materials and the future research direction were proposed.