基于Novachip超薄磨耗层的高速公路沥青路面养护技术应用研究

Research on Maintenance Technology of Expressway Asphalt Pavement Based on Novachip Ultra-thin Wear Layer

为了探究Novachip超薄磨耗层在高速公路沥青路面养护中的应用,在对Novachip超薄磨耗层对旧路面修复机理介绍的基础上,介绍了Novachip超薄磨耗层在GS高速某标段养护中的应用,并通过现场测试对应用效果进行了评价。研究成果表明:Novachip超薄磨耗层技术主要应用粘结能力强且破乳速度快的改性乳化沥青和单一粒径的沥青混合料;改性乳化沥青一方面紧紧地与既有道路面层粘接在一起,另一方面通过渗透作用上升到单一粒径的集料中,固化后使得道路面层和开级配沥青混合料结合成整体并在道路表面形成保护层;实测数据表明,Novachip超薄磨耗层不仅阻断了原有道路面层与外界直接接触,且有效提高路面降噪能力和抗滑等性能,也降低了道路遭受水害的可能性。

In order to explore the application of Novachip ultra-thin wear layer in the maintenance of asphalt pavement of expressway. On the basis of introducing the mechanism of repairing old pavement with Novachip super-thin abrasive layer,this paper introduces the application of Novachip super-thin abrasive layer in the maintenance of a certain section of GS High Speed Way,and evaluates the application effect through field test.The research results show that:Novachip Ultra-thin Abrasive Layer Technology mainly uses modified emulsified asphalt with strong bonding ability and fast demulsification speed and single particle size asphalt mixture.On the one hand,the modified emulsified asphalt is tightly bonded with the existing road surface layer,on the other hand,it rises to the single particle size aggregate through infiltration. After solidification,the road surface layer and open graded asphalt mixture are combined into a whole and form a protective layer on the road surface.The measured data show that the Novachip ultra-thin wear layer not only blocks the direct contact between the original road surface and the outside world,but also effectively improves the noise reduction and anti-skid performance of the road surface,and also reduces the possibility of road suffering from water hazards.