一种温拌剂对SBS改性沥青性能影响研究

研究了一种自制温拌剂对SBS改性沥青的物理性能和燃烧性能的影响,并通过动态剪切流变仪(DSR)温度扫描试验分析自制温拌剂对SBS改性沥青流变性能的影响。针入度、延度、软化点试验结果表明:自制温拌剂的加入能使沥青的稠度增加,能降低沥青的温度敏感性,提高沥青的高温性能;极限氧指数试验结果表明:温拌剂的加入能提高SBS改性沥青的阻燃性能;温度扫描试验结果表明:与SBS改性沥青相比,掺加6%温拌剂的SBS沥青有更大的复合模量、车辙因子、疲劳因子,更小的相位角,这说明温拌剂的加入提高了SBS改性沥青的车辙性能和疲劳性能。

Research on the Influence of a Kind of Warm Mix Asphalt Additive on SBS Asphalt Properties

The influence of a kind of warm mix asphalt additive on flame retardancy property and physical properties of SBS modified asphalt were studied.The effects of the warm mix asphalt additive on rheological properties of SBS modified asphalt were also studied using dynamic shear rheometer（DSR） test.The variation of the softening point,penetration,ductility of asphalt binder indicated that the addition of warm mix asphalt additive can reduce the temperature sensitivity and improve the high temperature stability of SBS asphalt binder.The results of limit oxygen index showed that the flame retardancy property of SBS asphalt binder was improved when the warm mix asphalt additive had been added.Furthermore,the results of temperature sweeps by DSR on SBS asphalt and that modified by 6% warm mix asphalt additive revealed that the rutting resistance and fatigue property of SBS asphalt were also improved when the warm mix asphalt additive had been added.