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Thursday, July 11 • 10:00 - 10:20

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In Switzerland, low-noise pavements have established themselves in many places as an effective noise abatement measure at the source: Since 2010, nearly 1000 low-noise pavements were constructed, many of them in urban areas. Thanks to the research efforts of recent years and many practical experiences, the asphalt mixtures have been improved with regard to their noise-reducing effect and durability. This article highlights the most important steps in development and optimization of low-noise pavements, provides data on the achieved long-term noise reductions and answers questions about their successful practical implementation. With the mixtures available today, permanent noise reductions of up to 4 dB can be achieved. In the first years after installation, the effect is significantly greater. On the basis of today's findings, it can be assumed that high traffic loads (especially with heavy traffic) and increased ingress of dirt only slightly increase the risk of above-average loss of efficiency. Due to the significant reduction in noise emissions and the resulting lower masking of annoying impulse noise, elements such as structural markings, manhole covers, concrete carriageway elements or even joints to conventional pavements can lead to annoying noise level changes. These, however, can be largely prevented by the best practice solutions presented in this study. Thanks to the various research projects and the practical experience of recent years, many questions about the use of low-noise pavements have been addressed. In summary, nothing stands in the way of a large-scale application of low-noise pavements as an effective and long-term noise abatement measure at the source.


Erik Bühlmann

Dipl. phil. Nat. Geograph, Grolimund + Partner AG - environmental engineering


Thursday July 11, 2019 10:00 - 10:20 EDT
Westmount 1
  T04 Environ. & commun. noise, SS03 Action plans in urban areas