不同品牌SBS改性沥青低温性能多指标评价研究

Research on Multi-index Evaluation of Low Temperature Performance of SBS Modified Asphalt for Different Brands

采用延度指标评价不同品牌SBS改性沥青的低温性能,其测试结果相差不大,文中基于测力延度试验测试了七种品牌SBS改性沥青,提取了实验数据,将其归为位移类、斜率类、力学类及面积类四类16个指标,对七种品牌SBS改性沥青进行了低温性能评价并建立了多指标评价体系。结果表明:SBS改性沥青低温性能多指标评价体系适用于不同品牌的SBS改性沥青评价.

Generally,ductility index was used to evaluate the low temperature performance of SBS modified asphalt of different brands,and the test results are similar.In this paper,seven brands of SBS modified asphalt were tested based on the force ductility test,and the experimental data were extracted and classified into four categories,i.e.,displacement category,slope category,mechanics category and area category,with 16 indexes.The low temperature performance of seven brands of SBS modified asphalt was evaluated and a multi-index evaluation system was established.The results show that the multi-index evaluation system of low-temperature performance of SBS modified asphalt is suitable for different brands of SBS modified asphalt.