The service life of road pavement reduces as it ages and loses its properties due to the exposure to varying traffic loads and climatic conditions. This study explores the potential rejuvenation of the aged asphalt properties to enable it to be reused in pavement by adding hybrid rejuvenator (WEO-MLT). The WEO-MLT is composed of waste engine oil and maltene (MLT). Four types of binders, namely virgin asphalt, aged asphalt, 40% aged asphalt and rejuvenated asphalt, were prepared and evaluated via rheological and chemical tests [e.g. storage stability, asphaltene-to-MLT ratio, dynamic shear rheometer, bending beam rheometer, Fourier transform infrared (FTIR), thermogravimetric analysis and stripping resistance tests]. The results revealed that the WEO-MLT markedly enhanced the properties of aged asphalt at low and high temperatures. In contrast, the outcomes of FTIR suggested that the ageing properties of asphalt were not improved significantly by WEO-MLT due to the presence of a carboxyl group in its composition. TGA indicated that the initial decomposition for rejuvenated asphalt was approximately close to virgin asphalt. The stripping resistance test divulged the comparable performance of the rejuvenated asphalt to that of virgin asphalt. Therefore, WEO-MLT can be potentially used in the rejuvenation of the aged asphalt, paving the way to sustainable and eco-friendly asphalt production.

路面的使用寿命随着老化而缩短，并由于暴露于变化的交通负荷和气候条件而失去其特性。这项研究探索了老化沥青特性的潜在复兴，使其能够通过添加混合再生剂（WEO-MLT）在路面中重复使用。WEO-MLT由废机油和麦芽酮（MLT）组成。制备了四种类型的粘合剂，分别为原始沥青，老化沥青，40％老化沥青和再生沥青（通过储藏稳定性，沥青质与MLT的比值，动态剪切流变仪，弯曲梁流变仪，傅立叶测试）进行评估。红外变换（FTIR），热重分析和抗剥离性测试]。结果表明，WEO-MLT在低温和高温下均显着提高了老化沥青的性能。相反，FTIR的结果表明，由于在其组成中存在羧基，WEO-MLT并未显着改善沥青的老化性能。TGA表明，再生沥青的初始分解接近原始沥青。耐剥离性测试揭示了再生沥青与原始沥青的可比性能。因此，WEO-MLT可以潜在地用于老化沥青的修复，为可持续和环保的沥青生产铺平道路。耐剥离性测试揭示了再生沥青与原始沥青的可比性能。因此，WEO-MLT可以潜在地用于老化沥青的修复，为可持续和环保的沥青生产铺平道路。耐剥离性测试揭示了再生沥青与原始沥青的可比性能。因此，WEO-MLT可以潜在地用于老化沥青的修复，为可持续和环保的沥青生产铺平道路。