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本文通过对山区隧道路段路面进行“白改黑”设计,设计方案采用将原水泥混凝土路面按照水泥混凝土路面维修处治方案局部维修后,再整体加铺4cm SMA-13沥青玛蹄脂碎石混合料(改性沥青)+6cm AC-20C中粒式沥青混凝土(改性沥青),保证极重载交通量下公路路面的日常运行,为隧道路段“白改黑”路面维修与施工质量控制提供指导依据。
In this paper, the design of the “white to black” pavement of mountain tunnel section is designed. The original cement concrete pavement is repaired locally according to the cement concrete pavement maintenance treatment program, and then the 4 cm SMA-13 asphalt mastic gravel Mixture (modified bitumen) + 6cm AC-20C mid-grain asphalt concrete (modified bitumen), to ensure the daily operation of road surface under heavy traffic load, for the road section “white to black ” pavement maintenance and construction Quality control to provide guidance.