摘要
本文通过低温弯曲蠕变试验(BBR试验),比较基质沥青、SBS改性沥青和多聚磷酸(PPA)/SBS复合改性沥青低温弯曲蠕变性能。得到不同温度下三种沥青的蠕变劲度S和蠕变速率m,分别从温度和改性剂两个方面研究三者的低温开裂性能,结果表明PPA/SBS复合改性沥青的低温性能较其他两种沥青强。又从PPA和SBS两种改性剂的改性机理入手,进一步分析PPA/SBS复合改性沥青的低温抗开裂性能。
In this article,through the low temperature bending creep test,the comparison of matrix asphalt,poly phosphoric acid（PPA）/SBS composite modified asphalt and SBS modified asphalt bending creep properties at low temperature.In order to get stiffness modulus S and creep rate m of the three kinds of asphalt under different temperature creep,temperature and the modifier was used to research of cold cracking performance.The results showed that PPA/SBS composite modified asphalt low temperature compared with other two kinds of asphalt is better.And from PPA and SBS modification mechanism of two kinds of modifier,further analysis of PPA/SBS composite modified asphalt cracking resistance at low temperature.
出处
《内蒙古工业大学学报（自然科学版）》
2016年第1期41-45,共5页
Journal of Inner Mongolia University of Technology：Natural Science Edition
基金
内蒙古工业大学校级科研项目(X2001413)
