Asphalt Pavement Acoustic Performance Model

Abstract

Low-noise pavements are used as an effective method of traffic noise mitigation. Low-noise pavements reduce the noise that arises due to interactions between tires and road surfaces (tire/road) via the implementation of three main components: low pavement roughness, negative pavement texture, and a high pavement air-void content. The tire/road noise reduction capabilities of the wearing layer vary depending on the aggregate type, gradation, bitumen and air-void content, and density. Consequently, the demand for an accurate tire/road noise prediction model has arisen from the design of asphalt mixtures. This paper deals with how asphalt mixture components of the wearing layer influence tire/pavement noise reduction and presents a model for tire/road noise level prediction based on the asphalt mixture composition. The paper demonstrates that the noise reduction level of low-noise asphalt pavements is dependent on the composition of the asphalt mixture. Asphalt wearing layer mixture composition parameters were tested in the laboratory from cores taken from 18 road sections, where acoustic properties were measured using a close-proximity (CPX) method. The proposed linear model is based on the bitumen amount, the air-void content of the mixture and aggregate shape and involves materials that comply with the general requirements for high-quality asphalt mixtures. The model allows for the prediction of the tire/road noise level at the asphalt mixture design stage using asphalt mixture components and volumetric properties. The proposed model is the first stage in the building of a complex model with a much wider range of low-noise asphalts components, pavement profile depth and CPX-value relationships.

Sustainable Mobility: A Review of Possible Actions and Policies

“…The impacts of noise on human health have been the focus of attention for many years; some reviews can be found in [109][110][111][112][113][114][115][116]. Infrastructures and mitigation methods were studied, among others, in [117][118][119][120][121][122][123][124][125][126][127][128]. Finally, the reduction of noise produced by engines has been studied in [129][130][131][132][133][134][135][136][137].…”

Pass-by Characterization of Noise Emitted by Different Categories of Seagoing Ships in Ports

“…After the publication of European Noise Directive 2002/49/EC (END) [21], sustainability has grown towards the noise sources required by END: road and railway traffic [22][23][24], airports [25,26], and wind turbines [27,28]. For these type of noise sources, the scientific community has put a lot of effort into developing innovative and environmentally-friendly mitigations, such as low-noise pavements [29,30], live and integrated monitoring systems [31,32], sustainable metamaterial absorber [33,34], and sonic crystal noise barriers made of recycled materials [35].…”

Stabilization of a p-u Sensor Mounted on a Vehicle for Measuring the Acoustic Impedance of Road Surfaces

“…The knowledge of noise generation mechanisms is vital for improving mitigation actions [27] applied to the two main actors in the phenomenon: Tires have been optimized [28], and mostly, low noise pavements have recently spread, some of which have even been developed with recycled materials [29,30]. Since tire/road noise depends on structural parameters of road surfaces [31], the European Union has recently prescribed acoustic tests of newly laid surfaces [32] by means of the Close Proximity Index (CPX) method [33] during the first three months from laying date.…”