聚合物SBS的种类对中海AH-70重交通道路沥青性能的影响

研究了不同种类聚合物SBS在相同制备工艺条件下对中海AH-70重交通道路沥青性能的影响。结果表明:不同牌号的SBS对沥青的改性效果存在差异,SBS(1301-1H)能够显著提高沥青的高温路用性能;SBS(796)对沥青低温路用性能的改善效果最优;SBS(501)改善沥青感温性的效果最佳;通过研究高温储存稳定性和荧光显微结构可知SBS(796)与沥青的相容性最好。在实验考察范围内,SBS(501)与SBS(796)复配时能制备各项指标均满足JTG F40—2004技术要求的I-D改性沥青。

INFLUENCE OF ADDING SBS ON PERFORMANCE OF ZHONGHAI NO.70 HEAVY DUTY ROAD ASPHALT

The effects of SBS types on the properties of Zhonghai 7# heavy duty road asphalt were investigated after the SBS modified asphalts were prepared under the same conditions. The results indicate that the modification effect on Zhonghai asphalt depends on the kinds of SBSs. The SBS (1301-1H) can improve the pavement performance of Zhonghai asphalt at high temperature, while the effect of SBS (796) on the low temperature property of Zhonghai asphalt is the best. The SBS（501）is the best in improving the ability to resist temperature sensitivity of asphalt. The compatibility between SBS (796) and Zhonghai asphalt is the best, proved by the test of storage stability at high temperature and fluorescence image analysis. Within the scope of the experimental investigation, the I-D modified asphalt can be obtained using the compound of SBS (501) and SBS (796), all the indexes of the asphalt product can meet the JTG F40-2004 technical requirements.