活化胶粉类高粘弹改性沥青超薄罩面应用技术研究

为探究活化胶粉类高粘弹改性沥青混合料在超薄罩面中的适用性，采用车辙试验、小梁弯曲试验、浸水马歇尔试验、冻融劈裂试验等对比高粘弹改性沥青和SBS改性沥青混合料的高温性能、低温性能和水稳定性能，并依托G30线嘉峪关段铺筑试验段。结果表明，相较于SBS改性沥青混合料，高粘弹改性沥青混合料的高温性能提升约70%，水稳定性能提升约20%，低温性能提升约10%，可显著改善路面的服役状况。

Research on application technology of activated rubber powder modified high viscoelastic asphalt ultra-thin cover

In order to investigate the applicability of activated rubber powder high viscoelastic modified asphalt mixture in ultra-thin cover, this paper adopts rutting test, beam bending test, immersed Marshall test, freeze-thaw splitting test to compare the high-temperature performance, low-temperature performance and water stability of the high viscoelastic modified asphalt mixture and SBS modified asphalt mixture. And an ultra-thin cover test section is paved at Jiayuguan section of G30 Expressway. The results show that compared to SBS modified asphalt mixture, high viscoelastic modified asphalt mixture has a high temperature performance improvement of about 70%, water stability performance improvement of about 20%, and low temperature performance improvement of about 10%, which can significantly improve the service condition of the pavement.