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掺钢渣SMA-13沥青混合料抗滑功能特性提升及机理研究
Study on the Improvement and Mechanism of Anti-sliding Functional Characteristics of Steel Slag SMA-13 Asphalt Mixture
【摘要】 文中分别采取2.36 mm以上钢渣集料、4.75 mm以上钢渣集料以及9.5 mm以上钢渣集料替换玄武岩集料,揭示其抗滑性能的提升机理.结果表明:钢渣集料赋予了钢渣沥青混合料更高的纹理特征,提高了钢渣沥青混合料的抗滑性能.其2.36 mm以上替换玄武岩集料的钢渣沥青混合料体现出最佳的粗糙度和抗滑性能,构造深度和摩擦力系数最高提升9.71%与47.5%.考虑到2.36 mm以上替换和4.75 mm以上替换性能提升无明显差异,建议将钢渣集料的最佳掺量定义为4.75 mm以上钢渣集料替换玄武岩集料.
【Abstract】 Steel slag aggregate over 2.36 mm, steel slag aggregate over 4.75 mm and steel slag aggregate over 9.5 mm were used to replace basalt aggregate, respectively, and the mechanism of improving its anti-sliding performance was revealed. The results show that the steel slag aggregate endows the steel slag asphalt mixture with higher texture characteristics and improves the skid resistance of the steel slag asphalt mixture. The steel slag asphalt mixture with a thickness of more than 2.36 mm instead of basalt aggregate shows the best roughness and anti-sliding performance, and the structural depth and friction coefficient increase by 9.71% and 47.5% at the highest. Considering that there is no obvious difference in performance improvement between replacement of 2.36 mm or more and replacement of 4.75 mm or more, it is suggested that the optimum content of steel slag aggregate should be defined as replacement of basalt aggregate with steel slag aggregate of 4.75 mm or more.
【Key words】 steel slag; basalt; asphalt mixture; anti-slip functional properties;
- 【文献出处】 武汉理工大学学报(交通科学与工程版) ,Journal of Wuhan University of Technology(Transportation Science & Engineering) , 编辑部邮箱 ,2024年06期
- 【分类号】U414
- 【下载频次】24