ID 36_14 “Acoustical characterization of low-noise prototype asphalt concretes for electric vehicles”
13 Dec , 2021 - Papers
Paper submitted to EURONOISE 2021 “Acoustical characterization of low-noise prototype asphalt concretes for electric vehicles”
Julien Cesbron, Simon Bianchetti, Marie-Agnès Pallas, Filippo G. Praticò, Rosario Fedele, Gianfranco Pellicano, Antonino Moro, Francesco Bianco.
Abstract: The paper deals with the acoustical characterization of low-noise asphalt concretes developed for noise reduction in urban areas within the LIFE E-VIA project (LIFE18 ENV/IT/000201). With the perspective of an increasing number of electric vehicles (EVs) in urban area, the asphalt concrete mixes have been optimized considering Life Cycle Cost with respect to actual best practices. Two very thin asphalt concretes (VTAC) of 6 mm maximum aggregate size have been implemented on a reference test track in France. Both are based on the same formulation, but one mix contains 1.9% crumb rubber by weight. The noise performance of these prototype test sections has been evaluated by means of close-proximity (CPX) tests and controlled pass-by (CPB) noise measurements for two EV models. CPX results have shown a noise reduction of about 3 dB(A) by comparison with a reference dense asphalt concrete 0/10, while an average pass-by noise reduction of about 4 dB(A) has been observed for the sample of EVs tested.
Keywords: electric vehicles noise, tyre/road noise, low-noise asphalt concrete, life cycle analysis.