Due to its abundance, used cooking oil (UCO) can be used as a bio-rejuvenator for bitumen in roads that contain high contents of recycled asphalt pavement material to reduce costs and environmental impacts. In this study, the potential of UCO and novel epoxidized cooking oil (EPCO) was assessed to rejuvenate aged bitumen and provide long-term rejuvenation efficiency compared to plant-based commercial rejuvenators (Rej. A and Rej. B). The immediate cracking resistance of UCO and EPCO was found to be comparable to Rej. A and Rej. B whereas the long-term cracking resistance of EPCO and Rej. B was superior to that of Rej. A and UCO. The epoxide groups present in EPCO helped disperse the asphaltene clusters by creating bridges between the molecules and prevent their agglomeration, which slowed down ageing. The chemical modification of UCO enhanced its long-term rejuvenation performance, hence making EPCO a promising low-cost bio-alternative for bitumen rejuvenation.

中文翻译：

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对精炼废食用油进行低成本化学改性以生产持久的生物沥青路面

由于其储量丰富，废食用油 (UCO) 可用作含有高含量再生沥青路面材料的道路中沥青的生物再生剂，以降低成本和环境影响。在这项研究中，与基于植物的商业再生剂（Rej. A 和 Rej. B）相比，评估了 UCO 和新型环氧化食用油 (EPCO) 再生老化沥青并提供长期再生效率的潜力。发现 UCO 和 EPCO 的即时抗裂性与 Rej 相当。A 和 Rej. B 而 EPCO 和 Rej 的长期抗裂性。B 优于 Rej。A和UCO。EPCO 中的环氧基团通过在分子之间建立桥梁来帮助分散沥青质簇，并防止其团聚，从而减缓老化。UCO 的化学改性增强了其长期再生性能，因此使 EPCO 成为沥青再生的一种有前途的低成本生物替代品。