SBS改性沥青性能探究

SBS modified asphalt

论文以30#、50#低标号沥青作为基质沥青,采用SBS对基质沥青进行改性,SBS改性实验结果表明:当SBS掺量为0-6%时,随着SBS掺量的增加,30#与50#改性沥青的针入度逐渐降低,软化点逐渐升高,即改性沥青的高温性能提高,改性沥青的抗老化性能以及高温延度得到明显改善;但SBS对改性沥青的低温性能影响较小。

30# and 50# low grade asphalt are used as the base asphalt to be modified with SBS in this paper. The results of the experiment show that when the SBS dosage is within 0-6%,with SBS's content increasing,the penetration gradually declines while the softening point increases,which means that the high temperature properties of the modified asphalt are improved. The anti-aging performance of modified asphalt and the high temperature ductility are improved significantly as well. However,the SBS modified asphalt does not show good performance in low temperature.