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MOISTURE AND FLEXURAL BEHAVIOUR OF HEMP MAT FOAM STRUCTURAL INSULATED PANEL SPECIMENS

journal of Green Building 2014年第2期9卷 87-101页

作者： kris j.dick.farhoud delij.ni Andy Yuen Department of Biosystems Engineering Faculty of EngineeringUniversity of ManitobaWinnipegManitobaCanada

The use of structural insulated panels(SIPs)for wall and roof assemblies in residential and commercial buildings is a well-known construction *** typically use a combination of either expanded polystyrene foam(EPS)or polyurethane foam(PUR)as the core *** covering or skin is predominantly oriented strand board(OSB).The OSB is either bonded to the foam with adhesive in the case of EPS,while polyurethane is used to provide adhesion with PUR *** paper presents the results of research that investigated the use of industrial hemp mat used as a skin for soy-based polyurethane foam panels.A series of tests were conducted to investigate moisture resistance and flexural behaviour on hemp mat foam *** absorption behaviour was evaluated on three specimen types:uncoated,earth plaster and tung oil treated hemp *** absorption coefficient Aw was determined for all *** tung oil treated specimens exhibited a water absorption coefficient that was 5.3%of that for untreated hemp mat panel *** tests were conducted on dry specimens with earth-plastered hemp mat,tung oil coated hemp mat,OSB and,untreated hemp mat *** oil provided resistance to tension failure and increased capacity to withstand considerable deformation without tensile failure in flexural *** with pure foam specimens,untreated hemp mat improved flexural performance by 16.3%.

关键词： industrial hemp moisture absorption flexural behaviour structural insulated panels

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POWER CONSUMPTION COMPARISON OF FIVE BUILDING ENVELOPES IN THE NORTHERN PRAIRIE CLIMATE OF MAniTOBA

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journal of Green Building 2014年第4期9卷 147-160页

作者： kris j.dick Hossein Safavian Grant Rayner Director-The Alternative Village Department of Biosystems EngineeringFaculty of EngineeringUniversity of ManitobaRm E1-344 EITC75 Chancellors CircleWinnipegManitobaCanada Department of Biosystems Engineering Faculty of EngineeringUniversity of Manitoba

The energy efficiency of a building depends on building envelope *** results presented in this paper are the first of a long-term building envelope research project at the Alternative Village at the University of Manitoba in Winnipeg,Manitoba,*** test buildings were constructed using the following systems:two wood frames with fiberglass batt insulation and dense pack cellulose,one polyurethane structural insulated panels(PUR SIP),and two with the Stay in place PVC concrete form building system using 102mm and 204mm of concrete externally insulated with 102mm of expanded polystyrene *** of the buildings had a common foundation and roof system with a footprint of 23.8 *** door tests were conducted to determine air *** structure was heated with an electrical resistance heater and maintained at a constant internal *** thermal gradient through the wall and power consumption were *** study period discussed in this report represents the main heating season from October 2011 to April 2012 consisting of 209 *** on the power consumption,the PUR SIP consumed the least at 2498 kWh,while the 204 mm Stay in place PVC concrete form building used the most at 2898 kWh for the same time *** thermal gradient through the cross section of the wood frame structures was compared through the cavity insulation and at the *** was found that the cellulose building provided better thermal resistance along the stud when compared to the fiberglass batt insulation.

关键词： fiberglass insulation cellulose insulation polyurethane structural insulated panels power consumption mass walls

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