Photo-oxidation on the Performance of Modified Asphalt
In terms of asphalt, evaporation, oxidation, decomposition, polymerization and other physical chemical changes will happen at high temperatures and the role of oxygen. The main factors that induce asphalt aging and degradation of asphalt pavement performance are sun light and oxygen. This paper selected three kinds of modified asphalt used Sasobit, SBS, and rubber powder respectively, to analyze the evolution rule of modified asphalt road performance under the action of optical oxygen aging effect, through asphalt routine tests, SHRP dynamic shear and bending tests, infrared spectroscopy and other research tools. The results show that: different modified bitumen has different capacities of anti-photo-oxidation; after aging, the lightweight components of asphalt decrease and asphaltenes increase; asphalt viscosity is increased, temperature sensitivity is reduced, high temperature stability is enhanced, low temperature crack resistance is reduced, the anti-rutting ability is enhanced, the anti-deformation ability is diminished. The results provide evidence for the selection of high-grade asphalt pavement on high-radiation areas.
Modified Asphalt Photo-oxidation Performance Infrared Spectroscopy
Weirong Huang Xiaohong Guo Bangyin Liu
School of Civil Engineering & Architecture, Chongqing Jiaotong University, China, 400074 School of Management, Chongqing Jiaotong University, China, 400074 Chongqing Cheng Bang Science and Technology Development Co.Ltd, China,400060
国际会议
The 1st International Conference on Sustainable Construction & Risk Management(首届可持续建设与风险管理国际会议)
重庆
英文
776-781
2010-06-12（万方平台首次上网日期，不代表论文的发表时间）