Home » Caltrans Thin Lift Study: Effects of Asphalt Pavements on Wayside Noise by United States Department of Transportati
Caltrans Thin Lift Study: Effects of Asphalt Pavements on Wayside Noise United States Department of Transportati

Caltrans Thin Lift Study: Effects of Asphalt Pavements on Wayside Noise

United States Department of Transportati

Published December 15th 2013
ISBN : 9781494427504
Paperback
272 pages
Enter the sum

 About the Book 

The Volpe Center Acoustics Facility, in support of the California Department of Transportation, participated in a long-term study to assess several types of pavement for the purpose of noise abatement. On a 6.4-km (4-mi) stretch of a 2-lane highwayMoreThe Volpe Center Acoustics Facility, in support of the California Department of Transportation, participated in a long-term study to assess several types of pavement for the purpose of noise abatement. On a 6.4-km (4-mi) stretch of a 2-lane highway in Southern California, several asphalt pavement overlays were examined. Acoustical, meteorological, and traffic data were collected in each pavement overlay section, where microphones were deployed at multiple distances and heights. Single vehicle pass-by events were recorded primarily for 3 vehicle types: automobiles, medium trucks, and heavy trucks. Data were analyzed to determine the noise benefit of each pavement as compared to the reference dense-graded asphalt pavement- this includes a modified Statistical Pass-By Index as well as average LAFmx values for each vehicle type. In addition, 1/3-octave band data were examined. Results from the study indicate that applying a quieter pavement overlay can reduce wayside-measured sound levels.