Research On The Surface Material Of Asphalt Pavement In Tunnel

In the past cement concrete paving was mostly adopted in tunnel.Now asphalt pavement has been put to use more and more on highway,bridge and tunnel because of many merits such as seamless,low-noise,good planeness,droving steadily,riding comfortable and maintain easily. To direct at the feature of surrouding of paving in tunnel and at performance requirement of pavement,two kind of asphalt mixtures(flame retardant and modified asphalt mixture and high viscosity modified asphlt mixture) used in tunnel are studied and analysed by experiment.Two kinds of new material(anit-sliding material on thin pavement and waterproof cohesional layer)used in tunnel are developed. The thesis intend to study and improve some performance of asphalt pavement,and at the same time make advantage of asphalt pavement bringed into play ,more over meet the requirement of safety,comfort and durability of tunnel.At last three kinds of paving come into being through inspecting and verifying engineering data and one kind of material named waterproof cohesional layer:the flame retardant and modified asphaltSMA,the low-noise and drainable asphalt pavement, anit-sliding layerl on thin pavement and waterproof cohesional layer.the result shown that the advantage of asphalt pavement applied to tunnel can bring into play fully,more over,according to the particular requirement of tunnel paving,we can design new pavement whose functions are perfect.The methods used in the thesis are mostly experiment and analysis. Applicable conclusions are arrived at through analyzing experiment data practical engineering.