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调查发现,山区长陡坡路段车辙、水损害等病害尤为严重,影响道路服务水平。通过对大粒径透水性沥青混合料的试验,提出在混合料中用高模量改性沥青、掺加纤维等措施,可以有效延缓车辙、裂缝等病害的发生,结构组合中与密级配混凝土、钻孔排水工艺相结合,可提高该结构层的耐久性和功能性。路用状况表明,该结构减缓了病害的发生,提高了道路服务水平。
The survey found that the rutting and water damage of the steep slopes in the mountainous areas are particularly serious, affecting the service level of the roads. Through the experiment of large-size water-permeable asphalt mixture, it is proposed that using high-modulus modified asphalt and admixing fiber in the mixture can effectively delay the occurrence of rutting and cracking and other diseases. In the structure combination with dense graded concrete , Drilling drainage process combined to improve the durability and functionality of the structural layer. Road use shows that the structure slows down the occurrence of diseases and improves the level of road service.