Mixture Design Optimization of Low-Noise Pavements

Losa, Massimo; Leandri, Pietro; Licitra, Gaetano

doi:10.3141/2372-04

Cited by 34 publications

(13 citation statements)

References 4 publications

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“…An extended literature review of several researcher outcomes [17][18][19][20][21][22] allowed for the determination of correlations between the air-void content and noise level (see Figure 1) and mean profile depth (see Figure 2). Based on other researcher's measurements, it can be seen that a low-noise-level (below 100 dB) asphalt mixture can contain 2.3%-28.5% air-voids; however, all asphalt layers with an air-void content of more than 8% assures less than 98.5 dB noise (see Figure 1).…”

Section: Background Of Pavement Acoustical Performancementioning

confidence: 99%

Asphalt Pavement Acoustic Performance Model

et al. 2019

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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.

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Section: Background Of Pavement Acoustical Performancementioning

confidence: 99%

Asphalt Pavement Acoustic Performance Model

et al. 2019

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“…A multi-year acoustical monitoring was carried out by means of SPB and CPX methods and results are shown in this paper, and the availability of the experimental road surfaces are a good opportunity to perform further side researches on collected data (for example, see [7][8][9][10][11][12]), including analysis on vibrations whose elaborations are still ongoing.…”

Section: Objectivementioning

confidence: 99%

“…All installations are about 200 m long and placed on extra-urban roads not in densely urbanized areas. For more details on composition, volumetric characteristics, aggregate grading and fractal dimensions of the mixtures see [11]. It is necessary to underline that the experimental surfaces have been laid in contexts which present different local surrounding conditions (lane width, roadside ground, guard-rail, slope, exposure to sun, traffic density and typology etc.).…”

Section: Experimental Surfacesmentioning

confidence: 99%

Performance Assessment of Low-Noise Road Surfaces in the Leopoldo Project: Comparison and Validation of Different Measurement Methods

et al. 2015

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In almost all urban contexts and in many extra-urban conurbations, where road traffic is the main noise pollution source, the use of barriers is not allowed. In these cases, low-noise road surfaces are the most used mitigation action together with traffic flow reduction. Selecting the optimal surface is only the first problem that the public administration has to face. In the second place, it has to consider the issue of assessing the efficacy of the mitigation action. The purpose of the LEOPOLDO project was to improve the knowledge in the design and the characterization of low-noise road surfaces, producing guidelines helpful to the public administrations. Several experimental road surfaces were tested. Moreover, several measurement methods were implemented aiming to select those that are suitable for a correct assessment of the pavement performances laid as mitigation planning. In this paper, the experience gained in the LEOPOLDO project will be described, focusing on both the measurement methods adopted to assess the performance

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“…Airborne noise is related to the compression of the air trapped within the tread of the rolling tire [4]. Studies regarding optimal road texture and mixture design for noise abatement are widely available [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Low-Frequency Road Noise of Electric Vehicles Based on Measured Road Surface Morphology

Cheng

Huang

2019

WEVJ

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In this paper, the noise vibration harshness (NVH) road surface morphology of a test site is scanned to establish a data processing system for the road surface, which can be used to transform the road surface morphology into the road surface excitation required for the road noise simulation analysis. The road surface morphology of the test site is used as the excitation input of the simulation analysis. The results obtained from the simulation analysis are equivalent to the experimental results. Using the actual scanning road surface morphology to simulate the excitation of a vehicle, the noise, as well as the vibration response of the vehicle under the actual road excitation of NVH in the early stage of vehicle development, can be accurately predicted. In the physical prototype stage, the rectification of vehicle road noise and the optimization to provide the needed excitation for the simulation analysis can be done, which will reduce the labor costs of the relevant experiment. Therefore, this method of road noise research has important engineering significance.

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Mixture Design Optimization of Low-Noise Pavements

Cited by 34 publications

References 4 publications

Asphalt Pavement Acoustic Performance Model

Asphalt Pavement Acoustic Performance Model

Performance Assessment of Low-Noise Road Surfaces in the Leopoldo Project: Comparison and Validation of Different Measurement Methods

Low-Frequency Road Noise of Electric Vehicles Based on Measured Road Surface Morphology

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