Lignin is a natural polymer and the second-most abundant material in the plant kingdom containing antioxidant properties. Research using lignin asphalt binder modifications aims to improve asphalt mixture properties, enhance aging resistance, reduce rutting, and extend fatigue lifespan. This research aims to study PG 64–22 binders with two lignin modifications, Pinus and Eucalyptus, in differing amounts. Rheological properties were studied and Fourier-transform infrared spectroscopy analysis tests for discovering chemical composition were performed. The results indicate the viability of modification by incorporating lignin into asphalt binders based on factors such as fatigue lifespan, rutting resistance, and a delayed short-term aging process.

木质素是一种天然聚合物，是植物界中含量第二丰富的含有抗​​氧化特性的材料。使用木质素沥青粘合剂改性的研究旨在改善沥青混合料性能、增强抗老化性、减少车辙并延长疲劳寿命。本研究旨在研究具有不同量的两种木质素修饰（松树和桉树）的PG 64-22 粘合剂。研究了流变特性，并进行了用于发现化学成分的傅立叶变换红外光谱分析测试。结果表明，基于疲劳寿命、抗车辙性和延迟的短期老化过程等因素，通过将木质素掺入沥青粘合剂中进行改性的可行性。