The application of reclaimed asphalt pavement has been widely encouraged due to its significant economic and environmental benefits. However, it is necessary to add rejuvenators to ensure its performance. Currently, bio-oil-based regenerants have attracted attention owing to their advantages of renewability and cost savings. The purpose of this paper is to study the use of recycled vegetable oil waste (R-oil) and recycled polyethylene particles for the regeneration and modification of aged asphalt. Physical, rheological, and chemical tests were used to figure out their influence on the pavement performance of aged asphalt. According to the physical test indices (penetration, softening point, and ductility), the performance of the rejuvenated asphalt was better than that of virgin asphalt. The workability and low-temperature performance of the rejuvenated asphalt were basically the same as those of virgin asphalt, and its fatigue and high-temperature performance were better. Infrared spectroscopy showed that R-oil diluted the high-polarity sulfoxide base of aged asphalt. Gel permeation chromatography showed that its molecular weight dispersion was better than that of aged asphalt. Therefore, R-oil and polyethylene can improve the pavement performance and chemical properties of aged asphalt.

再生沥青路面由于其显着的经济和环境效益而受到广泛的鼓励。但是，有必要添加嫩肤剂以确保其性能。目前，基于生物油的再生剂由于具有可再生性和节省成本的优点而受到关注。本文的目的是研究利用再生植物油废料（R-oil）和再生聚乙烯颗粒再生和改性老化沥青。物理，流变和化学测试被用来找出它们对老化沥青路面性能的影响。根据物理测试指标（渗透率，软化点和延展性），再生沥青的性能要优于原始沥青。再生沥青的可加工性和低温性能与原始沥青基本相同，疲劳性和高温性能更好。红外光谱显示，R油稀释了老化沥青的高极性亚砜基。凝胶渗透色谱法表明其分子量分散性优于老化的沥青。因此，R油和聚乙烯可以改善老化沥青的路面性能和化学性能。