不同应用场景的泡沫沥青就地冷再生路面结构研究

Study on the Structure of Foam Asphalt in Situ Cold Recycled Pavement in Different Application Scenarios

根据实际材料、结构参数,采用无机层疲劳开裂、沥青层永久变形等力学-经验法预估模型,文中对所拟定结构组合方案的抗车辙、抗疲劳等路用性能进行预估,通过对原面层整体就地冷再生,提出了典型的泡沫沥青就地冷再生路面结构。结果表明,五种交通等级下的无机层疲劳开裂和沥青层永久变形的性能预估,均可以满足规范设计的需求。

According to the actual materials and structural parameters, mechanical empirical prediction models such as fatigue cracking of inorganic layer and permanent deformation of asphalt layer are used to predict the rutting resistance, fatigue resistance and other road performance of the proposed structural combination scheme. Through the overall in-situ cold regeneration of the original surface course, a typical foam asphalt in-situ cold regeneration pavement structure is proposed. The results show that the performance prediction of fatigue cracking of inorganic layer and permanent deformation of asphalt layer under five traffic levels can meet the requirements of code design.