Paper andcardboard,madewithrecovered fibers obtainedbyrecycling,areanattractive,sustainable material. Recoveredpaperandcardboardaremainlyusedforpackagingpurposes,evenif,inrecentyears, variousresearchesfocusedonthepossibilitytodevelopnewproductsandproposedalternativeappli- cations. This paperpresentsnewdesignsofacousticabsorbersmadeofpartiallyrecycledcardboard,inorder to reducetheenvironmentalimpactofthematerialsusuallyusedfortheacousticcorrectiononindoor environments.Someofthesenewdesignedabsorbersareporousandmakeuseofthevisco-thermal absorption effectsintheporespace.OtherabsorbersarebasedontheHelmholtzresonatorprinciple. Computer modelingsoftwarewasusedtopredicttheperformanceoftheabsorbers;inparticular, different optionsofcardboard-basedpanelsandpaperboardtubeswereinvestigatedtoidentifythe solutions withthebestacousticperformance.Areal-sizeprototypeofasandwichpanelwasthenex- perimentally characterizedinlaboratory.Theabsorptioncoefficient spectrumoftheprototypewas measured accordingtotheprocedureindicatedintheISO354standard.Theresultsshowthatthe measured acousticabsorptioncoefficient ofthematerialmadeusingcardboardwashigherthantheone of traditionalgypsumabsorbers,givinginparticularanincreaseoftheacousticabsorptionatmidand high frequenciesintheorderof40%. A LifeCycleAssessmentanalysiswasalsoperformedtoevaluatetheenvironmentaladvantagesof these materials.Theenvironmentalimpactsoftheproductionofthecardboard-basedpanelwere compared withtheimpactsofconventionalacousticmaterials.Theanalysishighlightedapotentialre- duction ofbothenergydemandandgreenhousegasemissionsduringtheproductionprocessofthe cardboard-basedacousticmaterials. The estimatedCEDandGWPvaluesresult10%and34%respectivelylowerthantheimpactsofa conventionalgypsumboard.
Secchi, S., Asdrubali, F., Cellai, G., Nannipieri, E., Rotili, A., Vannucchi, I. (2016). Experimental and environmental analysis of new sound-absorbing and insulating elements in recycled cardboard. JOURNAL OF BUILDING ENGINEERING, 5, 1-12 [10.1016/j.jobe.2015.10.005].
Experimental and environmental analysis of new sound-absorbing and insulating elements in recycled cardboard
ASDRUBALI, Francesco;
2016-01-01
Abstract
Paper andcardboard,madewithrecovered fibers obtainedbyrecycling,areanattractive,sustainable material. Recoveredpaperandcardboardaremainlyusedforpackagingpurposes,evenif,inrecentyears, variousresearchesfocusedonthepossibilitytodevelopnewproductsandproposedalternativeappli- cations. This paperpresentsnewdesignsofacousticabsorbersmadeofpartiallyrecycledcardboard,inorder to reducetheenvironmentalimpactofthematerialsusuallyusedfortheacousticcorrectiononindoor environments.Someofthesenewdesignedabsorbersareporousandmakeuseofthevisco-thermal absorption effectsintheporespace.OtherabsorbersarebasedontheHelmholtzresonatorprinciple. Computer modelingsoftwarewasusedtopredicttheperformanceoftheabsorbers;inparticular, different optionsofcardboard-basedpanelsandpaperboardtubeswereinvestigatedtoidentifythe solutions withthebestacousticperformance.Areal-sizeprototypeofasandwichpanelwasthenex- perimentally characterizedinlaboratory.Theabsorptioncoefficient spectrumoftheprototypewas measured accordingtotheprocedureindicatedintheISO354standard.Theresultsshowthatthe measured acousticabsorptioncoefficient ofthematerialmadeusingcardboardwashigherthantheone of traditionalgypsumabsorbers,givinginparticularanincreaseoftheacousticabsorptionatmidand high frequenciesintheorderof40%. A LifeCycleAssessmentanalysiswasalsoperformedtoevaluatetheenvironmentaladvantagesof these materials.Theenvironmentalimpactsoftheproductionofthecardboard-basedpanelwere compared withtheimpactsofconventionalacousticmaterials.Theanalysishighlightedapotentialre- duction ofbothenergydemandandgreenhousegasemissionsduringtheproductionprocessofthe cardboard-basedacousticmaterials. The estimatedCEDandGWPvaluesresult10%and34%respectivelylowerthantheimpactsofa conventionalgypsumboard.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
