Long Term Monitoring Of Acoustic Performances Of Rubberized Surfaces

Description

Long Term Monitoring Of Acoustic Performances Of Rubberized Surfaces

Antonino Moro, Luca Teti, Francesco Bianco, Gaetano Licitra

ABSTRACT: The use of road surfaces with low noise emission characteristics is one of the actions mostly applied all over the world to decrease the number of people annoyed by road traffic noise. In Italy, the rubberized technologies have been introduced quite recently and some experimental installations have been acoustically studied in the last years. In particular, some experimental surfaces have been laid on extra-urban roads, exposed to the wear due to the actual traffic flow and climatic conditions. In order to verify the effectiveness of the noise mitigation action, the road pavements have been surveyed for some years by means the CPX method. Several rubberized road surfaces have been analyzed in terms of spatial homogeneity, spectral composition and performance durability of their noise emission reduction, comparing them to coeval road surfaces used as reference. Different regression models were proposed and applied to estimate the acoustic aging of analyzed pavements.
The obtained results provide important information about the noise characterization of rubberized road surfaces for practitioners and researchers.

KEYWORDS: rubberized surfaces, CPX, noise mitigation action, long term monitoring