新疆地区常用沥青短期老化低温性能的评价

Short-Term Aging Effect on Cryogenic Property of Common Asphalt in Xinjiang

以新疆地区4种常用沥青为例,应用BBR试验仪器,通过对RTFOT试验前后沥青低温性能指标的对比分析,得出4种沥青短期老化前后低温性能的排序,及改性沥青对短期老化的敏感性大于基质沥青,且短期老化对沥青松弛性能的影响大于对沥青劲度的影响。

Taking four kinds of common asphalt in Xinjiang area as examples, the BBR test instrument was used to conduct a study. Low temperature performance of the asphalt before and after short-term aging can be sorted out through the comparison and analysis of the low temperature performance indicators before and after RTFOT experiment. Meanwhile, it can be found that the sensitivity of the modified asphalt on short-term aging is greater than the base asphalt and short-term aging effect on the property of asphalt relaxation is greater than the effect on asphalt stiffness.