Traffic noise at two-layer porous asphalt: Oester Soegade: year no 7

Traffic noise has been measured at an urban road with 3 kinds of two-layer porous asphalt in Copenhagen (the Oester Soegade experiment). Porous asphalt permeability has also been measured regularly. The measurements are part of the clogging project of the Danish Road Institute noise abatement program. Measurements have been repeated every year and this technical note presents the results obtained when the pavements were 7 years old. The noise level at the reference section has not increased as much as one should expect. Often an increase of 1-2 decibels is experienced during the first three years or so. The reason may be that the content of bituminous binder in the reference asphalt concrete turned out to be larger and the surface smoother than intended. Had the traffic noise level at the reference surface increased more than actually measured this would have resulted in larger noise reduction just as the use of a reference pavement with a larger maximum aggregate size would have lead to larger noise reduction.


  • English

Media Info

  • Pagination: 46p
  • Serial:
    • Issue Number: 46

Subject/Index Terms

Filing Info

  • Accession Number: 01386545
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 8791177979
  • Files: ATRI
  • Created Date: Aug 22 2012 9:28PM