市政技术2024，Vol.42Issue(3)：157-163,7.DOI:10.19922/j.1009-7767.2024.03.157
废轮胎热解油(TPO)冷再生沥青混合料路用性能及机理研究
Research on Road Performance and Mechanism of Waste Tire Pyrolysis Oil(TPO)Cold Recycled Asphalt Mixtures
摘要
Abstract
Waste tire pyrolysis oil(TPO)is a by-product during the pyrolysis of waste tire.The chemical composition of TPO is similar to that of aromatic hydrocarbon oils of commonly asphalt regeneration agents,which make TPO to be a regeneration agent for reclaimed asphalt pavement(RAP)and restore some of the properties of RAP.Fourier transform infrared spectroscopy was used to study the chemical structure of recycled asphalt to investigate the regen-eration mechanism of TPO cold recycled asphalt mixture.Marshall's design method was adopted to determine the cold recycled asphalt mixture material components.The effects of TPO dosage,preactivation time and epoxy resin dosage on pavement performance of the recycled asphalt mixture were studied.The research results show that TPO ean soften aged asphalt,reduce its viscosity,rebalance the chemical composition of aged asphalt on the RAP surface and restore the technical properties of aged asphalt.However,regenerated only with TPO,the mechanical perfor-mance of the recycled asphalt mixture is not high.The addition of low-dose epoxy resin plays a role of structural re-inforcement within the asphalt mixture,which greatly improves the performance of TPO recycled asphalt mixture.关键词
废轮胎热解油/再生沥青混合料/环氧树脂/再生机理/性能恢复Key words
waste tire pyrolysis oil(TPO)/recycled asphalt mixture/epoxy resin/regeneration mechanism/perfor-mance recovery分类
交通工程引用本文复制引用
谢源珍,李元元,韩素兰,高仰明,周少云,范燚..废轮胎热解油(TPO)冷再生沥青混合料路用性能及机理研究[J].市政技术,2024,42(3):157-163,7.基金项目
湖北省大学生创新创业训练计划项目(S202210490050) （S202210490050）
