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dc.contributor.authorLombardo, Sen
dc.contributor.authorOrr, Johnen
dc.contributor.authorColey, DAen
dc.contributor.authorWood, MJen
dc.date.accessioned2018-01-16T15:27:12Z
dc.date.available2018-01-16T15:27:12Z
dc.date.issued2017-07-01en
dc.identifier.issn0143-6244
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/270645
dc.description.abstractThis paper investigates the novel possibility of utilising the structural concrete floor slab as a means of providing additional mid to low frequency sound absorption through the addition of cavities on the ceiling side, formed using flexible formwork, acting as Helmholtz resonators. Mid to low frequency sound absorption in rooms is typically achieved through the use of perforated plasterboard or a suspended tile-in-grid system. Such an approach can separate the room from the thermal mass of the ceiling above, leading to higher peak temperatures or increased cooling load. Suspended ceilings can also increase the embodied energy of the building and limit the potential for stack effect ventilation by reducing room height. In this work, frequency dependent absorption coefficients of perforated concrete samples were measured using an impedance tube test. The results were found to agree with a theoretical analysis, suggesting that it would be relatively easy to predict the performance of perforations of other depths and diameters including those targeted at absorbing higher frequencies.
dc.publisherSAGE Publications Inc.
dc.titleA new route to exposed thermal mass: Sound-absorbing poured concreteen
dc.typeArticle
prism.endingPage420
prism.issueIdentifier4en
prism.publicationDate2017en
prism.publicationNameBuilding Services Engineering Research and Technologyen
prism.startingPage408
prism.volume38en
dc.identifier.doi10.17863/CAM.17578
dcterms.dateAccepted2017-02-18en
rioxxterms.versionofrecord10.1177/0143624417698833en
rioxxterms.versionAM*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-07-01en
dc.contributor.orcidOrr, John [0000-0003-2687-6353]
dc.identifier.eissn1477-0849
rioxxterms.typeJournal Article/Reviewen
rioxxterms.freetoread.startdate2018-03-09


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