东南大学学报（英文版）2008，Vol.24Issue(4)：503-507,5.
适应西藏高原环境的沥青抗紫外线老化试验研究
Anti-ultraviolet aging tests of asphalts adapting to environment in Tibetan Plateau of China
廖公云 1黄晓明 1巴桑顿珠2
作者信息
- 1. 东南大学交通学院,南京,210096
- 2. 西宁市交通局,西宁,810000
- 折叠
摘要
Abstract
Ultraviolet (UV) aging is one of the main factors which cause premature damage of asphalt pavements in the Tibetan Plateau, China. According to the measured levels of UV radiation, aging tests of styrene-butadiene rubber (SBR) asphalts with different contents of three anti-UV-aging agents including nano-TiO2, CeO2 and carbon black are performed. Common indices, which include retained penetration after thin film oven tests (TFOT) and softening point, and strategic highway research program (SHRP) indices of aged asphalts are evaluated. Infrared absorption spectral analysis is performed on asphalt specimens with 0. 8% carbon black which have been aged for differentaging times (500, 1000 and 1 500 h). By grey incidence analysis, the optimal contents of anti-UV-aging agents are determined. The results show that TiO2 and CeO2 are not only good UV absorbing or shielding agents, but also strong oxidants. Carbon black is a good anti-UV-aging agent, and its optimal content is about 0. 8% of asphalt weight. UV aging of asphalt mainly occurs in the early stages of aging. The longer the aging time, the more severe the aging of asphalt.关键词
紫外线老化/抗老化剂/炭黑/红外光谱分析/灰色关联分析Key words
ultraviolet (UV) aging/agent/carbon black/infrared absorption spectral analysis/grey incidence analysis分类
交通工程引用本文复制引用
廖公云,黄晓明,巴桑顿珠..适应西藏高原环境的沥青抗紫外线老化试验研究[J].东南大学学报（英文版）,2008,24(4):503-507,5.
