Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 547980
Title Creep deflection of Wood Polymer Composite profiles at demanding conditions
Author(s) Oever, Martien van den; Molenveld, Karin
Source Case Studies in Construction Materials 10 (2019). - ISSN 2214-5095
Department(s) BBP Biorefinery & Sustainable Value Chains
BBP Sustainable Chemistry & Technology
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Creep - Outdoor condition - Strain - Testing standard - Wood polymer composite (WPC)

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.

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