An Introduction to Tire/Pavement Noise of Asphalt Pavement
نویسنده
چکیده
1.0 Introduction ..........................................................................................................................................................2 2.0 Relevant Topics in Sound and Acoustics ............................................................................................................... 2.1 Sound......................................................................................................................................................... 2.2 Noise.......................................................................................................................................................... 3.0 Noise Metrics ......................................................................................................................................................... 3.1 The Decibel Scale...................................................................................................................................... 3.2 Frequency .................................................................................................................................................. 3.3 Weighting Scales ....................................................................................................................................... 3.4 Perception of Noise ................................................................................................................................... 4.0 Tire/Pavement Noise Generation............................................................................................................................ 4.1 Source Generation Mechanisms ................................................................................................................ 4.2Sound Enhancement Mechanisms.............................................................................................................. 4.3 Summary ................................................................................................................................................... 5.0 Reduced Noise Pavement Principles ...................................................................................................................... 5.1 Porous Pavement ...................................................................................................................................... 5.2 Gap-graded Thin Overlays with Small Aggregate .................................................................................... 5.3 Texturing for Reduced Noise .................................................................................................................... 5.4 Poro-elastic Pavements.............................................................................................................................. 6.0 Tire/ Pavement Noise Measurement....................................................................................................................... 6.1 Statistical Passby (SPB) ............................................................................................................................ 6.2 Controlled Passby (CPB)........................................................................................................................... 6.3 Time-averaged Traffic Noise .................................................................................................................... 6.4 Close Proximity Methods (CPX)............................................................................................................... 6.5 Close Proximity Intensity (CPI) ................................................................................................................ 6.6 Pavement Absorption ................................................................................................................................ 6.7 Laboratory Based Measurements .............................................................................................................. 7.0 US Traffic Noise Policy ......................................................................................................................................... 7.1 FHWA Policy and Regulations ................................................................................................................. 7.2 Quiet Pavement Pilot Programs................................................................................................................. 8.0 Conclusions ............................................................................................................................................................ 9.0 References ..............................................................................................................................................................
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