Creep deflection of Wood Polymer Composite profiles at demanding conditions

Durability and low maintenance make Wood Polymer Composite (WPC) profiles popular in decking applications. EN 15534-4 specifies minimum performance levels to guarantee WPC quality. However, despite such quality specifications, occasionally high temperature creep issues are reported. This paper evalu...

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Main Authors: Martien van den Oever, Karin Molenveld
Format: Article
Language:English
Published: Elsevier 2019-06-01
Series:Case Studies in Construction Materials
Online Access:http://www.sciencedirect.com/science/article/pii/S2214509518303280
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author Martien van den Oever
Karin Molenveld
author_facet Martien van den Oever
Karin Molenveld
author_sort Martien van den Oever
collection DOAJ
description Durability and low maintenance make Wood Polymer Composite (WPC) profiles popular in decking applications. EN 15534-4 specifies minimum performance levels to guarantee WPC quality. However, despite such quality specifications, occasionally high temperature creep issues are reported. This paper evaluates the creep performance of three commercial WPC decking profile grades. All three WPC grades meet the requirements specified in EN 15534-4. Nevertheless, at slightly more demanding load conditions, some WPC samples fail around the creep deflection limits specified in the standard, and which are supposed safe. Reference outdoor testing in the moderate climate of the Netherlands shows creep deflection rates which are expected to lead to fatal failure of these WPC samples in a couple of years. It is concluded that predictive testing requires insight in progressive creep strain development relative to fatal failure strain level. Keywords: Wood polymer composite (WPC), Creep, Strain, Testing standard, Outdoor condition
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spelling doaj.art-a00a8b40536c48dcbd3ed522dd9c84152022-12-21T19:37:56ZengElsevierCase Studies in Construction Materials2214-50952019-06-0110Creep deflection of Wood Polymer Composite profiles at demanding conditionsMartien van den Oever0Karin Molenveld1Corresponding author.; Wageningen Food & Biobased Research, PO Box 17, 6700 AA, Wageningen, the NetherlandsWageningen Food & Biobased Research, PO Box 17, 6700 AA, Wageningen, the NetherlandsDurability and low maintenance make Wood Polymer Composite (WPC) profiles popular in decking applications. EN 15534-4 specifies minimum performance levels to guarantee WPC quality. However, despite such quality specifications, occasionally high temperature creep issues are reported. This paper evaluates the creep performance of three commercial WPC decking profile grades. All three WPC grades meet the requirements specified in EN 15534-4. Nevertheless, at slightly more demanding load conditions, some WPC samples fail around the creep deflection limits specified in the standard, and which are supposed safe. Reference outdoor testing in the moderate climate of the Netherlands shows creep deflection rates which are expected to lead to fatal failure of these WPC samples in a couple of years. It is concluded that predictive testing requires insight in progressive creep strain development relative to fatal failure strain level. Keywords: Wood polymer composite (WPC), Creep, Strain, Testing standard, Outdoor conditionhttp://www.sciencedirect.com/science/article/pii/S2214509518303280
spellingShingle Martien van den Oever
Karin Molenveld
Creep deflection of Wood Polymer Composite profiles at demanding conditions
Case Studies in Construction Materials
title Creep deflection of Wood Polymer Composite profiles at demanding conditions
title_full Creep deflection of Wood Polymer Composite profiles at demanding conditions
title_fullStr Creep deflection of Wood Polymer Composite profiles at demanding conditions
title_full_unstemmed Creep deflection of Wood Polymer Composite profiles at demanding conditions
title_short Creep deflection of Wood Polymer Composite profiles at demanding conditions
title_sort creep deflection of wood polymer composite profiles at demanding conditions
url http://www.sciencedirect.com/science/article/pii/S2214509518303280
work_keys_str_mv AT martienvandenoever creepdeflectionofwoodpolymercompositeprofilesatdemandingconditions
AT karinmolenveld creepdeflectionofwoodpolymercompositeprofilesatdemandingconditions