摘要
对沥青进行了不同温度和紫外光强度条件下的光热耦合老化,研究了光热耦合作用对沥青老化性能的影响。结果表明,热和紫外光对沥青具有耦合老化作用,但温度较低(40℃)时,光热耦合作用对沥青性能的影响不明显,而随着温度的升高,光热耦合作用对沥青性能的影响显著增大。在光热耦合过程中,紫外光强度对沥青软化点的影响较大,而对沥青黏度的影响较小。
The photo - thermal coupled aging was conducted on bitumen at different temperatures and ultraviolet （UV） intensities.Effects of the photo - thermal coupling on aging properties of the bitumen were investigated. Results indicated that the heat and UV light exhibited coupled aging effect on the bitumen.The photo - thermal coupled aging of bitumen was not obvious at low temperature（40℃）,while the photo - thermal coupled effect was significandy increased with the rise of temperature.During the photo - thermal coupled aging processes,the softening point of bitumen was obviously influenced by the UV light whereas the viscosity was little affected with the rise of UV intensity.
出处
《石油沥青》
2012年第6期1-4,共4页
Petroleum Asphalt
基金
交通运输部交通应用基础研究项目(2011-319-811-420)
中央高校基本科研业务费专项资金资助项目(2011-YB-04)
关键词
沥青
光热耦合
老化性能
bitumen
photo - thermal coupling
aging property
