SBS物理和化学改性沥青混合料路用性能研究

对SBS改性沥青混合料进行了一系列室内试验研究,包括高温车辙试验、APA车辙试验、低温弯曲试验、残留稳定度和冻融劈裂试验等.研究结果表明,SBS化学改性沥青混合料的高温稳定性、低温抗裂性和水稳定性均比SBS物理改性沥青混合料好.SBS化学改性沥青混合料具有良好的路用性能,是一种值得推广的沥青路面材料.

Road performance of SBS asphalt mixtures by physical and chemical modification

A series of laboratory tests were performed on SBS modified asphalt mixtures, including the rutting test at high temperature, APA rutting test, bending test at low temperature, and residual stability and freeze-thaw split test. The results show that the SBS asphalt mixture by chemical modification is superior to that by physical modification in stability at high temperature, crack resistance at low temperature, and water stability. Therefore, the SBS asphalt mixture by chemical modification is of good road performance, and worth popularizeing for road pavement.