摘要
为探究多聚磷酸(PPA)掺量对多聚磷酸改性沥青性能的影响,通过制备不同PPA掺量的多聚磷酸改性沥青及宏观技术手段研究PPA掺量对多聚磷酸改性沥青性能的影响,采用微观红外光谱技术揭示了多聚磷酸改性沥青的改性机理.结果表明:随着PPA掺量的增加,多聚磷酸改性沥青针入度和10℃延度显著降低,而软化点和黏度明显增大,且多聚磷酸与基质沥青之间发生了明显的化学反应,生成了新的物质.
In order to explore the effect of the content of PPA on the performance of polyphosphate modified asphalt,polyphosphate modified asphalt with different content of PPA was prepared to study the effect of the content of PPA on the performance of polyphosphate modified asphalt by means of macro technology,and reveal the modification mechanism of polyphosphate modified asphalt by micro infrared spectroscopy.The results show that with the increase of the content of polyphosphate,the penetration and 10℃ductility of polyphosphate modified asphalt decrease significantly,while the softening point and viscosity increase significantly and there is a significant chemical reaction between polyphosphate and matrix asphalt,resulting in new substances.
作者
窦谦培
师阳
DOU Qian-pei;SHI Yang(College of Highway,Chang'an University,Xi'an 710021,China;Key Laboratory of Highway Engineering in Special Area of Ministry of Education,Chang'an University,Xi'an 710021,China)
出处
《兰州工业学院学报》
2020年第3期24-27,共4页
Journal of Lanzhou Institute of Technology
基金
长江学者和创新团队发展计划滚动资助(IRT_15R29)。
关键词
PPA
多聚磷酸改性沥青
宏观性能
红外光谱
微观性能
PPA
polyphosphate modified asphalt
macro performance
infrared spectrum
micro performance
