Acoustic absorption of hemp-lime construction

Oliver Kinnane, Aidan Reilly, John Grimes, Sara Pavia, Rosanne Walker

Research output: Contribution to journalArticle

35 Citations (Scopus)
860 Downloads (Pure)

Abstract

Hemp-lime concrete is a sustainable alternative to standard wall construction materials. It boasts excellent hygrothermal properties in part deriving from its porous structure. This paper investigates the acoustic properties of hemp-lime concrete, using binders developed from hydrated lime and pozzolans as well as hydraulic and cementicious binders. To assess the acoustic absorption of hemp-lime walls, as they are commonly finished in practical construction, wall sections are rendered and the resulting impact on absorption is evaluated. Hemp-concretes with lime-pozzolan binders display superior acoustic properties relative to more hydraulic binders. These are diminished when rendered, as the open surface porosity is affected, however hemp-lime construction offers the potential to meet standard and guideline targets for spaces requiring acoustic treatment.
Original languageEnglish
Pages (from-to)674-682
JournalConstruction and Building Materials
Volume122
Early online date09 Jul 2016
DOIs
Publication statusPublished - 30 Sep 2016

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