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Acoustical estimation of parameters of porous road pavement

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Abstract

In the simplest case, porous road pavement of a known thickness is described by such parameters as porosity, tortuosity, and flow resistance. The problem of estimating these parameters is investigated in this paper. An acoustic signal reflected by the pavement is used for this. It is shown that this problem can be solved by an experiment conducted in the time domain (i.e., the pulse response of the media is recorded). The incident sound wave is thrown at a grazing angle to the surface between the pavement and the air to improve penetration into the porous medium. The procedure of computing of the pulse response using the Morse-Ingard model is described in detail.

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Correspondence to A. V. Shanin.

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Original Russian Text © V.Yu. Valyaev, A.V. Shanin, 2012, published in Akusticheskii Zhurnal, 2012, Vol. 58, No. 6, pp. 776–784.

The article was translated by the authors.

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Valyaev, V.Y., Shanin, A.V. Acoustical estimation of parameters of porous road pavement. Acoust. Phys. 58, 731–739 (2012). https://doi.org/10.1134/S1063771012060140

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  • DOI: https://doi.org/10.1134/S1063771012060140

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