温拌SBS改性沥青混合料试验性能研究

Study on Test Performance of Warm SBS Modified Asphalt Mixture

为研究温拌SBS改性沥青混合料的降温效果,采用Superpave提出的旋转压实仪(SGC)成型试件,根据温拌SBS改性沥青混合料的压实特性和体积特性分析了添加温拌剂后SBS沥青混合料的降温效果,确定了温拌SBS改性沥青混合料合适的压实温度;通过车辙试验、冻融劈裂试验、低温弯曲试验研究了温拌SBS改性沥青混合料的主要试验性能,试验结果表明温拌SBS改性沥青混合料具有良好的路用性能,均符合现行规范要求。

In order to research cooling effect of the warm SBS modified asphalt mixture, this paper uses superpave gyratory compactor （SGC） molded specimen. According to the warm SBS modified asphalt mixture compaction characteristics and volume characteristics, cooling effect of Warm Mix Additives has been analyzed, while suitable compaction temperature of Warm SBS modified asphalt mixture has been determined; by rutting test, freeze-thaw splitting test, and bending test at low temperature, this paper studies the main test performance of the Warm SBS modified asphalt mixture, and test results show that the warm SBS modified asphalt mixture has excellent pavement performance which accord with requirements of specification.