钢渣沥青混合料的抗滑性能试验与微观分析

Anti-skid Performance Test and Microscopic Analysis of Steel Slag Asphalt Mixture

摘要:

现有钢渣沥青混合料抗滑性能研究主要集中于室内试验和宏观力学性能分析，鲜有研究者开展试验路测试，从微观角度探究抗滑性能提升机制。为解决这些问题，设计了钢渣沥青混合料，并设置了使用玄武岩集料的对照组沥青混合料。然后，铺筑了试验路并开展了路面横向力系数、构造深度和摆值测试。随后，对钢渣沥青混合料路面和玄武岩沥青混合料路面的抗滑性能试验数据进行了分析。接着，对钢渣和玄武岩集料进行了扫描电镜试验，从微观角度对钢渣提升沥青混合料抗滑性能的机制进行了解释。得出结论：钢渣沥青混合料路面的抗滑性能优于玄武岩沥青混合料路面；相较于玄武岩集料，钢渣集料表面可吸收的沥青更多，集料-沥青之间的黏附性能更强。

Abstract:

The current research on the anti-skid performance of steel slag asphalt mixture mainly focuses on laboratory test and macroscopic mechanical performance analysis. Few researchers have conducted the test road tests to explore the mechanism of anti-skid performance improvement from a microscopic perspective. To address these issues, the steel slag asphalt mixture is designed, and a control group asphalt mixture using basalt aggregate is set up. Then, a test road is paved, and the side-way force coefficient (SFC) test, the texture depth test, the pendulum value test are conducted on the road. Subsequently, the anti-skid performance test data of steel slag asphalt mixture pavement and basalt asphalt mixture pavement are analyzed. Finally, the canning electron microscopy tests are conducted on steel slag and basalt aggregates to explain the mechanism by which steel slag enhances the skid resistance of asphalt mixtures from a microscopic perspective. The conclusion shows that the anti-skid performance of steel slag asphalt mixture pavement is better than that of basalt asphalt mixture pavement. Compared with basalt aggregates, the surface of steel slag aggregates can absorb more asphalt, and the adhesion between aggregates and asphalt is stronger.