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Sound Insulation Prediction of Single and Double CLT Panels
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-8451-4804
2019 (English)In: Proceedings of the ICA 2019 And EAA Euroregio: 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019 / [ed] Martin Ochmann; Michael Vorländer; Janina Fels, Deutsche Gesellschaft für Akustik e.V. (DEGA) , 2019, p. 242-248Conference paper, Published paper (Other academic)
Abstract [en]

Cross laminated timber (CLT) as building material has rapidly gained in popularity in recent years, and thereby also the demand of engineering tools to predict the sound insulation through CLT walls. The sound reduction through walls of single and double panels is predicted and the results are compared with those found in the literature as well as with a series of measurements conducted in a test mock-up of two rooms. Various configurations are considered where the plate thickness, addition of plaster boards and cavity distance (in case of a double panel) are altered. The prediction of single panel walls is based upon an established model (by Sharp) for homogenous materials, based upon theory and empirical data. For optimized application to CLT constructions specifically, the model is modified to some extent. The double panel walls are analytically modelled under the presumptions of no mechanical connection between the two panels and a cavity filled with mineral wool. The model make use of the results from the developed model for individual panels. The accuracy of the predicted sound insulation is estimated to be within a couple of dB’s concerning the weighted sound reduction indexes from 100 and 50 Hz.

Place, publisher, year, edition, pages
Deutsche Gesellschaft für Akustik e.V. (DEGA) , 2019. p. 242-248
Series
International Congress on Acoustics, ISSN 2226-7808, E-ISSN 2415-1599
Keywords [en]
Sound insulation, Cross Laminated Timber, Modelling
National Category
Fluid Mechanics
Research subject
Engineering Acoustics
Identifiers
URN: urn:nbn:se:ltu:diva-86072DOI: 10.18154/RWTH-CONV-239103Scopus ID: 2-s2.0-85099331620OAI: oai:DiVA.org:ltu-86072DiVA, id: diva2:1574198
Conference
23rd International Congress on Acoustics (ICA 2019) integrating 4th EAA Euroregio, Aachen, Germany, September 9-13, 2019
Funder
Luleå University of Technology
Note

ISBN för värdpublikation: 978-3-939296-15-7

Available from: 2021-06-28 Created: 2021-06-28 Last updated: 2025-02-09Bibliographically approved

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Ljunggren, Fredrik

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