ABSTRACT

This study describes the findings of an experimental work conducted on asphalt mixtures incorporated with copper slag (CS) and reclaimed asphalt pavement (RAP). CS and RAP are considered waste materials and these waste materials create enormous environmental issues. Their use in the highway construction sector will resolve the landfill problems associated with them. In this study, nine types of asphalt mixtures were prepared with different proportions of CS (0–15%) and RAP (0–30%). These mixes were tested for frictional characteristics under various conditions. The incorporation of CS improved Marshall stability and skid resistance of asphalt pavements. Mix 3 (0%RAP, 15%CS) showed the maximum skid resistance in dry conditions. The increase in skid resistance may be attributed to the high angularity, density, and friction angle of CS particles. However, the incorporation of RAP decreased skid resistance. The CS-RAP mixes also contribute to green technology as waste materials reduce the need for virgin aggregates in the road construction sector. The statistical analysis performed showed that the results are highly significant except in icy conditions where results obtained are insignificant.

摘要

本研究描述了对掺入铜渣 (CS) 和再生沥青路面 (RAP) 的沥青混合物进行的实验工作的结果。CS 和 RAP 被认为是废料，这些废料产生了巨大的环境问题。它们在高速公路建设部门的使用将解决与之相关的垃圾填埋问题。在这项研究中，制备了 9 种不同比例的 CS（0-15%）和 RAP（0-30%）的沥青混合料。对这些混合物在各种条件下的摩擦特性进行了测试。CS的加入提高了沥青路面的马歇尔稳定性和防滑性。混合 3（0%RAP，15%CS）在干燥条件下表现出最大的防滑性。防滑性的增加可能归因于 CS 颗粒的高棱角、密度和摩擦角。然而，RAP 的加入降低了防滑性。CS-RAP 混合物还有助于绿色技术，因为废料减少了道路建设部门对原始骨料的需求。进行的统计分析表明，结果非常显着，除非在结冰条件下获得的结果微不足道。