SBS掺量对改性沥青技术指标的影响

通过对韩国SK沥青和壳牌沥青，分别掺入T161B和4303星型改性剂以及YH1301-1和1320-115线性改性剂，制备出SBS改性沥青，深入的分析了改性沥青各项性能随SBS掺量的变化规律。结果表明：改性剂掺量为4．4％的时候，改性沥青各项性能达到了最优，而且SBS改性剂掺量超过了4．8％的时候，其低温延度就会下降。

Effect of SBS dosage on the technical performance for modified asphalt

The excellent performance of SBS modified asphalt deriving from the SBS modifier,therefore the SBS dosage of modified asphalt directly determine its performance.The test of SK90# asphalt and Shell90# asphalt,respectively incorporated SBS modifier of YH1301-1,4303,T161B and 1320-115 prepare SBS modified asphalt.By the in-depth analysis and exploration the performance of modified asphalt with SBS dosage variation,the results show that when modifier content is 4.4%,its performance to optimize; when SBS modifier dosage more than 4.8%,its low-temperature will to drop ductility.