Article ID Journal Published Year Pages File Type
7152448 Applied Acoustics 2016 9 Pages PDF
Abstract
Significant differences in measured averaged noise levels, up to 1.7 dB, between test sections of open-graded wearing courses that were the same in principle, located on the same road but in different lanes were found when performing CPX measurements. At the same time the test sections of a dense pavement differed by max. 0.5 dB only. The calculated A-weighted sound pressure level variability index Scpx, considered to be an indication of pavement homogeneity, reached the value of 1.69 dB over a 500 m long test section of the porous pavement while the Scpx values for dense pavements were much below 0.5 dB.
Related Topics
Physical Sciences and Engineering Engineering Mechanical Engineering
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