Abstract This study investigated the relationship between chemical and physical or rheological properties of asphalt binders during aging. Two types of base asphalt binders and their SBS modified asphalt binders were chosen. Results show that carbonyl index (IC=O) or sulfoxide index (IS=O) for base asphalt binders has the higher correlation coefficient square (R2) with rheological properties than physical properties, while 0.5(IC=O+butadiene index (IC=C)) for SBS modified asphalt binders with viscosity shows the highest R2 compared with other physical and rheological indicators. Moreover, IC=O and 0.5(IC=O+IC=C) as chemical indicators are recommended to evaluate aging of base and SBS modified asphalt binders, respectively.

中文翻译：

---

老化过程中沥青结合料的化学和物理或流变特性之间的关系

摘要 本研究调查了老化过程中沥青结合料的化学和物理或流变特性之间的关系。选择了两种类型的基础沥青结合料和它们的 SBS 改性沥青结合料。结果表明，基础沥青结合料的羰基指数（IC=O）或亚砜指数（IS=O）与流变性能的相关系数平方（R2）高于物理性能，而0.5（IC=O+丁二烯指数（IC= C)) 与其他物理和流变指标相比，具有粘度的 SBS 改性沥青结合料显示出最高的 R2。此外，推荐使用 IC=O 和 0.5(IC=O+IC=C) 作为化学指标来分别评价基料和 SBS 改性沥青结合料的老化。