快速公交BRT专用车道养护沥青混合料的应用研究

市政道路工程中,快速公交BRT站台车道停车点较为固定,车辆刹车、启动频繁,容易在车道上造成剪切推移、车辙、坑洞等病害。因此,破损后养护材料的选择极为重要。试验及实际应用表明,添加抗车辙剂的改性SBS玛蹄脂SMA-16沥青混合料的高温稳定性、低温抗裂性和水稳定性较SBS改性SMA-13性能显著提高,更能满足BRT专用车道定点停车位铺装的薄弱点道路维养要求。

Study on Application of Asphalt Mixture in Curing of Dedicated Lane of Bus Rapid Transit(BRT)

In the municipal road engineering,the platform lane parking stops of bus rapid transit(BRT)are relatively fixed.The brake and start are frequent.In result,the diseases of shear shift,rut and pothole are easily caused.Therefore,it is very important to select the curing materials after damaged.The experiment and practical application show that the high-temperature stability,low-temperature crack resistance and water stability of the modified SBS mastic SMA-16 asphalt mixture with anti-rutting agent are more obviously improved than SBS modified SMA-13 performance,and are more suitable for the requirements of weak road maintenance of fixed-point parking stop pavement for the dedicated lane of BRT.