摘要
为了准确合理地评价沥青的抗老化性能,通过基质沥青和SBS改性沥青老化前后的三大指标试验和粘度试验对沥青的抗老化指标进行分析.结果表明,不同老化阶段,各种沥青表现的抗老化性能不同.软化点升高率不能用来评价SBS改性沥青的抗老化性能但可以用来评价基质沥青.残留针入度比、残留延度、老化前后的粘度比及老化指数均可以用来评价基质沥青和SBS改性沥青的抗老化性能.
In order to accurately evaluate the performance of aging resistance of asphalt,the changes of penetration,ductility,softening point and viscosity of base asphalt and SBS modified asphalt at different aging times were analyzed.Experiment results indicate that the performance of aging resistance of several asphalts vary at different aging times.The percentage of the increase of softening point between the original and the aged can not evaluate the performance of aging resistance of SBS modified asphalt,but can evaluate that of base asphalt.The changes of penetration,ductility,viscosity and the aging index can evaluate the performance of aging resistance of base asphalt and SBS modified asphalt.
出处
《河北工业大学学报》
CAS
北大核心
2013年第2期80-83,共4页
Journal of Hebei University of Technology
基金
高等学校博士学科点专项科研基金(20101317120007)
特殊地区公路工程教育部重点实验室开放基金(CHD2011SY003)
河北省自然科学基金(E2012202161)
关键词
基质沥青
SBS改性沥青
抗老化性能
评价指标
base asphalt
SBS modified asphalt
the performance of aging resistance
evaluate index
