摘要
为了研究荒漠地区两种常用沥青流变性能,采用DSR、BBR的试验方法分别对RTFOT短期老化前后沥青的流变参数进行对比分析,得出短期老化前后沥青性能排序。结果表明:高温下RTFOT前后沥青流变性能顺序为橡胶改性沥青>SBS改性沥青;低温下沥青RTFOT前流变性能顺序为SBS改性沥青>橡胶改性沥青,而沥青RTFOT后低温流变性能顺序为橡胶改性沥青>SBS改性沥青。研究表明在荒漠地区橡胶改性沥青的流变性能优于SBS改性沥青,短期老化提升了沥青抵抗流动变形的能力。
In order to study the theological properties of two kinds of asphalt used in desert area, the DSR and BBR test methods are used to compare and analyze the rheological parameters of asphalt before and after the short-term aging of RTFOT and obtain the asphalt performance sort before and after the short-term aging. Results show that, under high temperature, the asphalt rheological properties order before and after RTFOT is rubber modified asphalt SBS modified asphalt, under low temperature, the asphalt rheological properties order before and after RTFOT is SBS modified asphalt rubber modified asphalt, the rheological property order of asphalt at low temperature after RTFOT is rubber modified asphalt SBS modified asphalt. Research shows that rheological property of rubber modified asphalt is better than that of SBS modified asphalt in desert region, and short-term aging improves the ability of asphalt to resist flow deformation.
出处
《价值工程》
2016年第19期152-154,共3页
Value Engineering
