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Conference_programme: 25.2 - Tyre / road noise



Lecture: Tyre/road noise spectrum analysis of ageing low noise pavements

Author(s): Andriejauskas Tadas, Vaitkus Audrius, Čygas Donatas

Summary:
Traffic noise is an increasing problem which attracts more and more attention of road authorities, road engineers and planners, municipalities and societies. Various research studies and experiences showed that low noise pavements are an effective and efficient traffic noise mitigation solution. However, low noise pavements’ acoustical durability is not perpetual – noise reduction effect decrease over the pavement lifetime due to traffic and climate impacts. Paper presents research study which main objective was to compare acoustical ageing processes of traditional and low noise asphalt mixtures. Research included analysis of measured tyre/road noise levels (CPX) and spectrum changes for different asphalt pavements in the first 2 years of new road operation. Acoustical ageing trends and behaviour for different asphalt mixtures were determined and linked with the impacts of different influencing factors (traffic loads, volumes, texture changes, porosity changes). Paper concludes with initial results and conclusions of a longer-term study when analysing low noise asphalt mixtures’ acoustical and structural ageing and gives recommendation for low noise asphalt mixture development, construction and maintenance

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Corresponding author

Name: Mr Tadas Andriejauskas

e-mail: tadas.andriejauskas@vgtu.lt

Country: Lithuania