废机油再生沥青物理性能研究

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【中图分类号】：U414 【文献标志码】：A 【文章编号】：1008-3197（2025）02-62-04

【DOI编码】：10.3969/j.issn.1008-3197.2025.02.014

Study on Physical Properties of Waste Engine Oil Recycled Asphalt

WUHuamin

（Xingtai Road and Bridge Construction Group Co. Ltd.，Xingtai O540oo，China）

【Abstract】：Inorder to explore the improvement and recovery laws of the physical properties of aged asphalt byusing waste engine oil，this paper prepares agedasphalt in the laboratory，studies the influence of wasteengine oil content on the physical performance indicators of regenerated asphalt such as penetration，softening point， ductility，andBrinell viscosity，and determines the optimal amountof wasteengine oil.Itis thencombined with epoxy soybean oil to enhance the ductility recovery efect，analyze the regeneration mechanismof waste oil from aged asphalt through infrared spectroscopy experiments.The results show that the softening point and Brinellviscosityof recycled asphalt decrease with the increase of waste engineoil content，whilethe penetrationand ductility increase with the increase of waste engine oil content.Epoxy soybean oil can improve the ductility of aged asphalt，and the addition of 10% waste engine oil+ 5% epoxy soybean oil can improve the physical properties of recycled asphalt.

【Key words】：aged asphalt；waste engine oil； recycled asphalt；epoxy soybean oil

随着我国高等级道路通车里程的不断增加，交通基础设施逐渐从大规模建设向建养并重的方向发展，早期建设的沥青路面需要得到养护或维修，据统计，我国每年因沥青路面养护维修而产生的废旧沥青混合料（RAP）高达25亿t。（剩余4149字）