不同再生剂对老化SBS改性沥青性能影响分析

Analysis on the Influence of Different Regenerants on Performance of Aged SBS Modified Asphalt

摘要:

采用3种不同厂家生产的再生剂，进行再生SBS改性沥青的综合性能（包括传统的力学性能以及流变性能）评价，从而选择更适合SBS改性沥青的再生剂，并进行后续的用量计算。试验结果表明：无论何种再生剂，均对SBS改性沥青老化后的中、低温性能有促进作用，但是延度、弹性恢复、黏韧性、韧性等指标，不能恢复到原样SBS改性沥青的程度。综合比较，加入A型再生剂，所有性能均优于其他2种再生剂，因此最终选择A型再生剂作为试验所用再生剂。

Abstract:

Three different manufacturers of regenerants are used to evaluate the comprehensive performances (including traditional mechanical and rheological properties) of regenerated SBS modified asphalt so as to select the more suitable regenerant for SBS modified asphalt, and calculate the subsequent dosage. The experimental results indicate that no matter what kind of regenerant is used, it all promotes the medium and low-temperature performances of SBS modified asphalt after aging, but the indicators such as ductility, elastic recovery, viscosity and toughness cannot be restored to the level of the original SBS modified asphalt. After comprehensive comparison, the addition of Type A regenerant will make all performances more superior to the other two regenerants. Therefore, Type A regenerant is ultimately chosen as the regenerant for the experiment.