摘要
为了评价对SBS改性沥青技术性质的影响,分别进行了基质沥青和SBS改性沥青不同热氧老化时间后针入度、软化点、延度和粘度试验,分析了其技术性质变化随热氧老化时间变化规律。结果表明:经热氧老化后,SBS改性沥青针入度衰减幅度比基质沥青的要小,而SBS改性沥青5℃延度衰减幅度明显大于基质沥青,SBS改性沥青软化点有减小趋势,4种沥青粘度均呈增大趋势。
In order to evaluate the influence of thermal oxidative aging on the Technical properties of SBS modified asphalt, using softening point, ductility and viscosity test with the matrix asphalt and SBS modified asphalt that after different thermal oxidative aging time to analyses its technical properties＂ change with the thermal oxidative aging time. The results show that after thermal oxidative, SBS modified asphalt＇s penetration attenuation amplitude is smaller than the matrix asphalt, the SBS modified asphalt＇s ductility＇s（5℃） attenu- ation of the extension is bigger than the matrix asphalt SBS modified asphalt＇s softening point has a decreasing trend, four kinds of as- phalt＇s viscosity all showed a trend of increase.
出处
《黑龙江科技信息》
2014年第5期199-200,共2页
Heilongjiang Science and Technology Information
关键词
道路工程
沥青
SBS改性沥青
热氧老化
技术性质
road engineering
asphah
SBS modified asphalt
thermal oxidizing aging
properties
