Study On The Tire Road Noise Characteristics Of Intermittent Graded Asphalt Mixture

As the development of national economy and road transport, residents along the road suffer more and more serious traffic noise hazards. Take for the light transport as an example, traffic noise is the main form the Tire/Road noise at the conditions of high speeds. So, to solve the traffic noise, finding the main factors of the Tire/Road noise must be done. But the domestic research in this area is relatively less.This study is mainly based on the previous studies at homeland and abroad, Take the SMA asphalt mixture as the main object of this study, and also take OGFC, AC asphalt mixtures as the secondary study, Raised eight material properties of different parameters on the Tire/Road noise such as the maximum size mixture, key sieve passing rate, asphalt mixture specimen thickness, void fraction, aggregate ratio, asphalt mixture powder ratio, powder types, and different types of asphalt mixture additives. Based on the Helmholtz resonance model and damping model, further analyzes the structure depth and the damping ratio on the Tire/Road noise and make the tire/road noise prediction model.The results show that the eight different features of material parameters on the Tire/Road noise are different. The nature is that the parameters of these materials is changing the road surface depth and damping ratio. Therefore, when designing the mixtures and construction, select the appropriate key such as the maximum size, sieve passing rate, void fraction aggregate ratio, asphalt mixture powder ratio and different types of asphalt mixture additives can effectively alleviate the Environmental stress caused by road traffic noise.