Performances Evaluation of Flame-Retardant Special Maintenance Agent for Tunnel Asphalt Concrete Pavement

A new flame-retardant special maintenance agent for tunnel asphalt concrete pavement is studied.Firstly,the function of the maintenance agent on anti-ageing property of asphalt and flame-retardant property is evaluated,and then the permeability and anti-slip performence of tunnel asphalt concrete pavement with the maintenance agent are focused on.The result shows that the flame-retardant agent can effectively improve the anti-ageing property of asphalt and improve the impermeability of tunnel asphalt concrete pavementalmost without reducing the sliding resistance.