The Impact of Thin Asphalt Layers as a Road Traffic Noise Intervention in an Urban Environment

Barros, Ablenya Grangeiro de; Kampen, Jarl K.; Vuye, Cedric

doi:10.3390/su132212561

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…To capture enough information on the vehicle approaching and driving away from the microphone to comprise a noise sample for each vehicle passage, a time window of 4 s was chosen around that moment for cropping the long audio files. The audio files and timestamps recorded in this measurement campaign can be retrieved from an open-source online data repository 10 .…”

Section: B Recordings and Calculationsmentioning

confidence: 99%

Predicting vehicle category using psychoacoustic indicators from road traffic pass-by noise

Barros

Geluykens

Pereira

et al. 2023

The Journal of the Acoustical Society of America

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A set of road traffic pass-by noises containing more than 2000 vehicles was recorded following the Statistical Pass-By (SPB) methodology (ISO 11819-1:2022). Besides the acoustic descriptors, psychoacoustic indicators (loudness, sharpness, roughness, fluctuation strength) were retrieved for each pass-by of the three vehicle categories defined in the standard (passenger cars, dual-axles and multi-axles heavy vehicles). A fourth vehicle category, comprised of delivery vans, was also investigated. All psychoacoustic indicators significantly differed among vehicle categories, meaning that not only intensity descriptors but also temporal and spectral features of pass-by noise distinguish those classes. With enough instances and a balanced dataset across groups, a machine-learning classification algorithm was trained with 70% of the dataset to predict vehicle categories using the psychoacoustic indicators. Classification accuracy on the test set reached 72.5%. Accuracy losses were primarily caused by 25% of the actual passenger cars being misclassified as vans and vice-versa. Pooling these two categories increased accuracy to 82%. With more descriptors from road traffic pass-by noise than uniquely its maximum noise level, limiting definitions of vehicle categories may be overcome. As a result, measurements such as the SPB can become broader and vehicle fleets worldwide more consistently represented in terms of noise perception.

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Section: B Recordings and Calculationsmentioning

confidence: 99%

Predicting vehicle category using psychoacoustic indicators from road traffic pass-by noise

Barros

Geluykens

Pereira

et al. 2023

The Journal of the Acoustical Society of America

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“…Increasing the sound absorption coefficient of asphalt surface coatings is an important noise reduction strategy. In the research of Barros et al [10], it was shown that a reduction of 2.8 dB in noise exposure utilizing porous asphalt type was determined in the daytime and nighttime measurements. Bozkurt [5] explained that road pavements are an important parameter in reducing environmental noise and mentioned that material-based research improving acoustic properties is a very wide research subject.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Asphalt Pavement to Improve Environmental Noise and Water Sustainability

Bozkurt

Karakaş

2022

Sustainability

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Controlling environmental noise and reducing excessive noise is necessary to protect human health and provide auditory comfort. People are frequently exposed to traffic noise in their daily life and traffic noise is a considerable problem on the city scale. This study investigates the sound absorption coefficient in asphalt pavements so as to reduce traffic and environmental noise. The important parameters affecting the sound absorption coefficient in asphalt pavement, such as the use of porous asphalt pavements, clogging pores, the mixture content change, the thickness change, and getting wet, were identified. It is stated that the sound absorption coefficient in the asphalt layer can be increased with the use of a porous asphalt layer, and by changing the thickness and mixture content. In addition, with the effects of global warming, water supply problems are observable in cities. In this context, the use of rainwater is of vital importance. Permeability of the asphalt layer and storage of rainwater in the lower layer are recommended. The accumulation of rainwater with the aid of drainage in porous asphalt pavements has been investigated and the use of rainwater within the scope of recycling is explored. Within the scope of the research, the construction of porous asphalt pavements is suggested in a system that can store water, reuse rainwater with a new system proposal, and reduce environmental noise by increasing sound absorption performance. Accordingly, it will be possible to reduce the environmental noise level and to use rainwater within the scope of recycling. According to varying thicknesses, porous asphalt pavements were modeled using the finite element method, and the Von Mises stress and vertical deformation results of different thicknesses were compared.

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“…Gilani ve Mir'in [21] araştırmasında, aşırı trafik gürültüsünün uyku kalitesini azalttığı anlaşılmaktadır. Barros ve diğerleri [22] trafik gürültüsüne uzun süre maruz kalmanın kardiyovasküler hastalıklara, bilişsel işlev bozukluklarına ve uyku bozukluğu gibi sağlık sorunlarına neden olabileceğini açıklamışlardır.…”

Section: Introductionunclassified

Farklı Kalınlıktaki Modifiye Asfalt Yol Kaplamalarının Gerilme-Deformasyon ve Ses Yutma Performans Özelliklerinin İncelenmesi

Karakaş

Bozkurt

2022

DÜMF MD

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Özet Bitümlü sıcak karışım asfalt (BSK) ile hazırlanana asfalt kaplama, yük ve yolcu trafiğinde tercih edilmektedir ve esnek üst yapı tiplerinden biri olarak sıklıkla kullanılmaktadır. Bu doğrultuda, yol kaplamalarında en çok kullanılan karışım tiplerinden biri olan BSK kaplamanın performans özellikleri çok büyük önem arz etmektedir. Yolun hizmet ömrü boyunca göstermesi beklenen performansı sağlaması gerekmektedir. BSK; yüksek karışım tasarımı, konforlu, güvenli ve bozulmaya karşı dirençli olmalıdır. Ayrıca yol imalatında kullanılan hammaddelerin kısıtlı olması da göz önünde tutulduğunda, asfalt yolların çevresel koşullara (iklim, trafik yoğunluğu, vs..) karşı daha uzun süreli hizmet verebilmesi için asfalt yol karışım içeriğinde katkı malzemelerinin kullanmasına ihtiyaç duyulmuştur. Katkı maddeleri arasında Stiren Bütadien Stiren (SBS) polimerleri yaygın olarak kullanılmaktadır. Bu çalışmada, farklı kalınlıklarda BSK ile hazırlanan SBS modifiyeli asfalt beton kaplamaların değişik kalınlıklarda gerilme ve deformasyon davranışı sonlu elemanlar metodu uygulanarak numerik analiz yöntemi ile sayısal analizi karşılaştırmalı olarak incelenmiştir. Bu araştırmada, kalınlık artışının ses yutma katsayısına olan etkisi ve deformasyona olan etkisi araştırılmıştır. Asfalt kaplamalardaki kalınlık artışının, düşük frekanslardaki ses yutma performansını arttırabileceği anlaşılmıştır. Kalınlık artışının deformasyon oranını ciddi düzeyde azaltabildiği numerik analiz sonucunda tespit edilmiştir.

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The Impact of Thin Asphalt Layers as a Road Traffic Noise Intervention in an Urban Environment

Cited by 6 publications

References 37 publications

Predicting vehicle category using psychoacoustic indicators from road traffic pass-by noise

Predicting vehicle category using psychoacoustic indicators from road traffic pass-by noise

Investigation of Asphalt Pavement to Improve Environmental Noise and Water Sustainability

Farklı Kalınlıktaki Modifiye Asfalt Yol Kaplamalarının Gerilme-Deformasyon ve Ses Yutma Performans Özelliklerinin İncelenmesi

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