Porous road pavements: Acoustical characterization and propagation effects

Bérengier, Michel; Stinson, Michael R.; Daigle, Gilles A.; Hamet, J. F.

doi:10.1121/1.417998

Cited by 109 publications

(61 citation statements)

References 11 publications

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“…Porous surface has been introduced to reduce the tyre noise. A dense road surface reflects the sound energy, while a porous road surface absorbs the sound energy [5][6][7]. Ferguson also states that a porous surface absorb sound energy and allow some of the air around the tires to be pressed into the voids, wipe out air pressure before any noise is generated.…”

Section: Introductionmentioning

confidence: 99%

Sound absorption and morphology characteristic of porous concrete paving blocks

Halim

Nor

Ramadhansyah

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this study, sound absorption and morphology characteristic of Porous Concrete Paving Blocks (PCPB) at different sizes of coarse aggregate were presented. Three different sizes of coarse aggregate were used; passing 10 mm retained 5 mm (as Control), passing 8 mm retained 5 mm (8 -5) and passing 10 mm retained 8 mm (10 -8). The sound absorption test was conducted through the impedance tube at different frequency. It was found that the size of coarse aggregate affects the level of absorption of the specimens. It also shows that PCPB 10 -8 resulted in high sound absorption compared to the other blocks. On the other hand, microstructure morphology of PCPB shows a clearer version of existing micro-cracks and voids inside the specimens which affecting the results of sound absorption.

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Section: Introductionmentioning

confidence: 99%

Sound absorption and morphology characteristic of porous concrete paving blocks

Halim

Nor

Ramadhansyah

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The reader is referred to papers by Hamet, Attenborough, Berengier, Storeheier and von Meier in [INTROC 90, 1990] for further information. A more recent paper on the subject, specialized on propagation effects, appears as [Berengier et al, 1997].…”

Section: Acoustical Reduction Propertiesmentioning

confidence: 99%

Low noise road surfaces. A state-of-the-art review.

Sandberg

1999

J. Acoust. Soc. Jpn. (E), J Acoust Soc Jpn E

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This article summarizes present knowledge concerning the design and performance of low noise road surfaces. As a background, noise generation mechanisms and mechanisms causing noise reduction by surface design are explained, as well as the currently best measurement procedures. Guidelines on how to design a surface for low noise characteristics are given, for example texture optimization. Low noise surfaces include types like surface dressings with very small chippings, exposed aggregate cement concrete and thin bituminous surfaces ; also machine-ground cement concrete is mentioned. However, the type with the greatest potential for noise reduction is porous surfaces, both with bituminous and cement binders. It is shown that for these, the product of voids content and thickness is a good descriptor of noise reduction. Thicknesses of 40-50 mm and voids contents of 20 % are the minimum required in order to obtain a reasonable noise reduction, but there is no point in going to extreme thicknesses, say beyond 100 mm. It seems that the best traffic noise reduction attainable with such surfaces is around 8 dB(A) in new condition, using small chippings in the top layer. A surface named Twinlay has been especially optimized to have a long acoustical lifetime for urban applications at speeds around 50 km/h, otherwise clogging of porosities by dirt is a serious problem in urban areas. In most cases, regular cleaning operations are required. In applications where speeds are 90-130 km/h, there is a significant self-cleaning of porous surfaces and the acoustic lifetime can be acceptable even without cleaning. The article reviews the experience with low noise surfaces in various countries and also presents some futuristic designs, like an acoustical multi-resonator pavement and pavements made mainly of rubber particles, the latter having a potential of 10 dB(A) of noise reduction. There is no doubt that road surfaces will be used frequently to reduce traffic noise and can give substantial effects. One shall, however, observe that this may mean serious economic trade-offs and some other problems, as well as the long-term noise reduction efficiency still is poor for most designs.

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“…-The third model uses a phenomenological approach. This model [2] doesn't take into account the influence of pore shape factors since the thermal dissipation is important only for highly porous materials, with a small airflow resistance. It uses three parameters to characterize the material: flow resistivity, porosity and tortuosity.…”

Section: Acoustical Modelsmentioning

confidence: 99%

“…It's a four parameter model that is: airflow resistivity, porosity, tortuosity and a pore shape factor. -The second model [2] is a generalized model for materials where the pore diameter varies greatly and where the viscous and thermal functions must be treated separately by two pore shape factors. -The third model uses a phenomenological approach.…”

Section: Acoustical Modelsmentioning

confidence: 99%

Acoustical Performance of Concreted Wood Fiber Materials

Lumei

Arghir

Tot

2012

Proc Appl Math and Mech

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In this paper, an inverse acoustical characterization for determination of porosity, flow resistivity, tortuosity and other parameters of a concreted wood material was proposed. Sound absorption measurements for a concreted wood fiber material were made in an impedance tube. Four acoustical models from literature were briefly described. Each model was fitted to the experimental data in order to compute their unknown parameters. Using a least-square method, the experimental data (sound absorption coefficient) was used to optimize the acoustical models by best-fitting the unknown parameters. The results of this paper show that the presented technique leads to reliable estimates of the physical parameters of the material.

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Porous road pavements: Acoustical characterization and propagation effects

Cited by 109 publications

References 11 publications

Sound absorption and morphology characteristic of porous concrete paving blocks

Sound absorption and morphology characteristic of porous concrete paving blocks

Low noise road surfaces. A state-of-the-art review.

Acoustical Performance of Concreted Wood Fiber Materials

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