SBS剂量对改性沥青性质的影响

Effect of different dosage SBS on properties of modified asphalt

应用BBR和DSR流变仪,测定了同一种SBS以不同剂量对相同的沥青进行改性后样品的流变性质。通过对流变性质与SBS剂量之间关系的分析研究,发现改性沥青的高、低温性质随着SBS剂量的增大而改善,而这些均与改性沥青的亚微观结构有关。结果表明,改性沥青宏观性质的不同在很大程度上是由其亚微观结构所决定。

This paper measured the rheological date of modified asphalt by BBR and DSR rheologic instrument. The same asphalt was modified by the same SBS with different dosage. The relationship of rheological date and SBS dosage with modified asphalt was studied. It was pointed that the properties of modified asphalt at high and low temperature are improved by the content of modifier increasing. The results indicate that the properties of modified asphalt are affected by its sub-microstructure to a great extent. 2 tabs, 8 refs.