Application of Mid-surface Layer in Asphalt Pavement Tunnel Paving Based on Foam Warm Mix Technology

Abstract

With the deepening of the national green transportation policy, the constructi on of environmental protection and energy-saving highway has become the focus of th e industry. Based on the problem of flue gas emission from asphalt pavement tunnel pa vement, the mechanical foaming warm mixing technology is introduced. The foaming characteristics of modified asphalt, the performance of foam warm mix mixture, and th e evaluation of energy consumption and emission reduction of foam warm mix mixtur e are studied and analyzed. The results show that the energy consumption of foam asph alt production is significantly reduced, which has positive demonstration significance f or energy saving and emission reduction in highway construction.