钢渣在沥青混合料中的理化性能及工程性能研究

Physical and Chemical Properties and Engineering Properties of Steel Slag in Asphalt Mixture

摘要: 为了探究钢渣是否可以作为集料在路面中得到更加广泛的应用，本研究从钢渣的外观、化学组成及性质还有力学性能出发，逐渐深入的研究了钢渣的各项性质。首先，通过扫描电子显微镜探究了钢渣表面的纹理结构，进而通过针片状含量测试明确了粗钢渣的形状特性。随后通过X射线荧光光谱试验以及X射线衍射试验确定了钢渣的元素构成以及化合物构成。并且研究了钢渣的高温稳定性，最后，研究了钢渣的抗压性能以及耐磨性。研究结果表明，钢渣在干燥常温下具有稳定的化学性质，并且抗压耐磨性也与优质天然集料相差无几。本研究为钢渣在工程中的应用奠定了理论及试验基础。

Abstract: In order to explore the potential wider application of steel slag as aggregate in road pavement, this study starts with the examination of steel slag’s appearance, chemical composition, properties, and mechanical performance. Gradually, a thorough investigation of various properties of steel slag was conducted. Firstly, the texture structure of the steel slag surface was explored by scanning electron microscopy, and then the shape characteristics of the crude steel slag were clarified by the needle flake content test. Subsequently, the element composition and compound composition of the steel slag were determined by X-ray fluorescence spectroscopy and X-ray diffraction tests, and the high-temperature stability of the steel slag was studied. Finally, the compressive properties and wear resistance of steel slag were studied. The research results show that the steel slag has stable chemical properties at the normal temperature, and the compressive wear resistance is almost the same as that of high-quality natural aggregates. This study lays a theoretical and experimental basis for the application of steel slag in engineering.