老化后橡胶沥青混合料高温性能研究

   1,弥海晨2,张  2

1.陕西省交通建设集团公司,陕西 西安 710075

2. 西安公路研究院,陕西 西安 710065

  要:通过橡胶沥青混合料、复合橡胶沥青混合料和SBS改性沥青混合料对比试验,研究了三种混合料的耐老化性能以及老化后的高温性能。结果表明:橡胶沥青混合料的耐老化性能和老化后的高温性能优于复合橡胶沥青混合料和SBS改性沥青混合料。该研究结论可以解释实体工程中橡胶沥青混合料路面在长期使用过程中高温性能并不比SBS改性沥青混合料路面差的工程现象。

关键词:橡胶沥青;复合橡胶沥青;SBS改性沥青;沥青混合料;老化性能;高温性能

中图分类号:U414       文献标识码:A

 

Study on high temperature properties of rubber asphalt mixture after aging

LEI Jia1MI Hai-chen2ZHANG Juan2

1.Shaanxi Provincial Communication ConstructionXi'an 710075,China

2. Xi'an Highway Research InstituteXi'an 710065,China

AbstractThrough contrast test of rubber asphalt mixture, compound rubber asphalt mixture and SBS modified asphalt mixture, aging properties and high temperature performance of three types mixtures were studied. The results showed that the aging property of rubber asphalt mixture and the high temperature performance after aging were better than that of compound rubber asphalt mixture and SBS modified asphalt mixture. The conclusion of this study could explain the reasons that why the high temperature performance of rubber asphalt mixture pavement in the long term operation is no more than that of SBS modified asphalt mixture.

Key words rubber asphaltcompound rubber asphaltSBS modified asphaltasphalt mixtureaging propertyhigh temperature performance