与基质沥青相比,SBS改性沥青的低温性能更加复杂,因此,选用更合适的评价指标是必要的。采用测力延度试验,本文分析了不同SBS改性沥青在不同温度,不同改性剂掺量下的性能变化特点。选用柔量D/FZ,应力差值比(F1-FZ)/(F0-FZ)和能量比W2/W1作为评价指标并加以阐述,以更有效地评价SBS改性沥青的低温性能。 Compared with the matrix asphalt, SBS modified asphalt more low-temperature performance, therefore, the selection of more appropriate evaluation index is necessary. With the test of force and ductility, this paper analyzes the characteristics of different SBS modified asphalt at different temperatures and different modifiers. The compliance D / FZ, F1-FZ / (F0-FZ) and energy ratio W2 / W1 were chosen as evaluation indexes to describe the low temperature performance of SBS modified asphalt more effectively.