改性沥青老化机理及再生剂的研究  

Research on Aging Mechanism of Modified Asphalt and Recycling Agent

作　　者：徐静[1,2] 洪锦祥[1,2] 赵永利[3] 刘加平[1,2] 刘至飞[1,2] 

机构地区：[1]高性能土木工程材料国家重点实验室江苏省建筑科学研究院有限公司,南京210008 [2]江苏博特新材料有限公司,南京210008 [3]东南大学交通学院,南京210096

出　　处：《石油沥青》2011年第3期19-23,共5页Petroleum Asphalt

基　　金：西部交通减少科技项目-改性沥青及SMA路面性能恢复及再利用技术研究

摘　　要：基于改性沥青的老化机理基础上,试配了相应的再生剂,并进行系统的试验研究。研究认为,在改性沥青的老化过程中,基质沥青发生了挥发、氧化、聚合等物理化学反应,改性剂发生了氧化、裂解等反应,并最终导致改性沥青的路用性能大大降低。对再生剂的性能研究表明,以轻质油和重质油为主要成分的再生剂已不能满足改性沥青再生的要求,而添加交联组分、改性组分和渗透组分的新型再生剂,不仅与沥青的相容性好,而且大大提高了再生沥青的高、低温性能。Aging mechanism of modified asphalt was studied, recychng agent was made and studied by experiment. Results showed that on the process of modified asphalt aging, volatilization, oxidization, polymer- ization change occurred to asphalt, and oxidization and schizolysis change occurred to modifier, and there physical and chemical reactions made the decrease of pavement performance of modified asphalt remarkably. The study on properties of recycling agent showed that, these recycling agents which comprised clean oil and heavy oil couldn＇ t suffice requirement of modified asphalt regeneration. But the new type recycling agent , which comprised heavy oil, cross linker, modifier and osmotic agent, had great compatibility with asphalt, and raised the high and low temperature performance of regenerated asphalt.

关 键 词：改性沥青 老化机理 再生剂 再生沥青混合料 

分 类 号：U414[交通运输工程—道路与铁道工程]