Acoustic modeling of perforated concrete using the dual porosity theory |
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Authors: | J Carbajo TV Esquerdo-Lloret J Ramis AV Nadal-Gisbert FD Denia |
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Institution: | 1. University of Alicante, Department of Physics, System Engineering and Signal Theory, 03080 Alicante, Spain;2. Universitat Politècnica de València, Instituto de Diseño para la Fabricación y Producción Automatizada, 46022 Valencia, Spain;3. Universitat Politècnica de València, Instituto de Tecnología de Materiales, 46022 Valencia, Spain;4. Universitat Politècnica de València, Centro de Investigación en Ingeniería Mecánica, 46022 Valencia, Spain |
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Abstract: | Perforated concrete shows nowadays a high potential for many construction and building engineering applications. This work is devoted to the analysis of the acoustic properties of perforated concrete made from arlite lightweight aggregates. Concrete produced from these materials is an environmentally friendly alternative to traditional materials and offers a higher durability, excellent strength-to-weight ratio and low cost. In particular, it is shown that the acoustic behavior of perforated concrete can be modeled using a dual porosity approach based on the knowledge of the non-acoustic properties of the matrix granular material and geometrical data. To this end, various non-perforated and perforated samples were prepared and characterized in an experimental test facility, their acoustic properties being determined through the transfer function impedance tube method. Experimental and estimated results related to the acoustic properties of a number of prepared specimens are presented, showing a good agreement. Results suggest that this approach is suitable for practical design of such materials as part of noise control systems. |
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Keywords: | Perforated concrete Sustainable materials Acoustic properties Double porosity |
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