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Development and validation of a new asphalt mixture to reduce tyre-road contact noise in interurban areas

Abstract: Road transport is one of the most important sources of noise emissions having a serious impact on human health. Thus, the objective of this study is to develop an innovative asphalt mixture that decreases noise from tyre and pavement interaction on highways with average speeds of about 80 km/h. To achieve this, a series of mechanical and functional tests were conducted both in the laboratory and at the Gustave Eiffel University Accelerated Pavement Testing (APT) facility. The new experimental mixture achieves a balance between high void content and low macro-texture (wavelengths of 5-50 mm), which improves noise reduction while maintaining good mechanical performance. This is achieved thanks to its two-layer structure, with a top layer of reduced maximum aggregate size (4 mm) and a thickness suitable for optimum sound absorption. Various mechanical tests, including the particle loss test and the water sensitivity test, along with functional evaluations focusing on texture, flow resistivity and sound absorption properties, were performed. Measurements on the APT were taken at three different stages of the pavement service lifetime during the testing phase. The outcome was the pro duction of an asphalt mixture that reduced noise up to 6.8 dB in comparison to an asphalt concrete road.

 Authorship: Miera-Dominguez H., Lastra-González P., Indacoechea-Vega I., Castro-Fresno D., van Loon R., van Blokland G., Muresan B., Blanc J.,

 Fuente: Construction and Building Materials, 2024, 453, 139025

 Publisher: Elsevier Ltd

 Publication date: 29/11/2024

 No. of pages: 14

 Publication type: Article

 DOI: 10.1016/j.conbuildmat.2024.139025

 ISSN: 0950-0618,1879-0526

 Spanish project: PRE2020-093516

 European project: info:eu-repo/grantAgreement/EC/H2020/ 860441/eu/ Noise and Emissions Monitoring and radical mitigation/NEMO/

 Publication Url: https://doi.org/10.1016/j.conbuildmat.2024.139025

Authorship

VAN LOON, RONALD

VAN BLOCKLAND, GIJSJAN

MURESAN, BOGDAN

BLANC, JULIETTE