合成材料老化与应用2024，Vol.53Issue(6)：59-61,108,4.
不同老化程度对道路石油沥青性能影响
The Impact of Different Aging Levels on the Performance of Road Petroleum Asphalt
王鑫砚 1樊亮 2韩善剑 3祁聪 4唐新德 1李永振2
作者信息
- 1. 山东交通学院交通土建工程学院,山东济南 250357
- 2. 山东省交通科学研究院,山东济南 250102
- 3. 海南省交通投资控股有限公司,海南海口 570203
- 4. 京博(海南)新材料有限公司,海南儋州 571700
- 折叠
摘要
Abstract
To explore the performance changes of asphalt at different aging stages and its adhesion performance with aggregates,petroleum asphalts of grade 50,70 and 90 were utilized,and basalt,diabase,and diorite aggregates with varying acid-base properties were selected to conduct test.The short-term and long-term aging processes of asphalt were simulated using a Rotating Thin Film Oven(RTFOT)and a Pressure Aging Vessel(PAV).Changes in asphalt viscosity,the stability of its colloidal structure,and the dynamics of adhesion work and stripping work were investigated.The experimental results show that as aging progresses,the viscosity of all asphalts increases,with higher-grade asphalts showing more significant aging sensitivity.The colloidal stability index indicates an increase in the instability of the aged asphalt's colloidal structure.In terms of adhesion work,grade 50 asphalt shows a decrease with deeper aging,while grade 70 and 90 asphalts exhibit a trend of decreasing and then slightly increasing adhesion work after short-term and long-term aging.Stripping work analysis shows that as aging deepens,the stripping work of grade 70 and 90 asphalts decreases,while that of grade 50 asphalt increases.Moreover,viscosity does not directly reflect the adhesiveness of asphalt.关键词
老化/黏度老化指数/胶体稳定指数/黏附性Key words
aging/viscosity aging index/colloidal stability index/adhesiveness分类
交通工程引用本文复制引用
王鑫砚,樊亮,韩善剑,祁聪,唐新德,李永振..不同老化程度对道路石油沥青性能影响[J].合成材料老化与应用,2024,53(6):59-61,108,4.
