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Input Parameters for the Prediction of Acoustical Properties of Open Porous Asphalt

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The use of open porous asphalt (OPA) as a quiet road surface demands the prediction of acoustical properties of the road surface prior to construction. Here, a contribution for such a prediction is made. In order to characterise the OPA as a porous material, the porosity, the tortuosity and the flow resistivity are identified as the most important input parameters. Models are proposed to predict each of these parameters from the relevant technological parameters of the road material. The influence of grain size distribution and shape as well as asphalt mixture parameters are of primarily concern. The prediction from the proposed model relations are compared to measured results from a large pool of porous asphalt samples.
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Document Type: Research Article

Publication date: January 1, 2006

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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