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Content archived on 2024-04-19

DEVELOPMENT OF PERFORMANCE TESTS FOR DETERMINATION OF MOISTURE RESISTANCE OF WOOD-BASED PANELS - A PREREQUISITE TO HARMONIZE THE STANDARDISATION OF RESPECTIVE QUALITY SPECIFICATIONS IN CEN/TC 112

Objective

Sub-project 1: Development of performance tests for the determination of moisture resistance of particleboards, fibreboards and OSB boards

The main objective of sub-project 1 of the work programme is to develop test methods, with which it will be possible to assess the real moisture behaviour of particleboards, fibreboards and OSB boards. The strain mechanisms arising in the normal fields of application of these boards (eg. according to Service Class 2 of Eurocode 5 are to be included as closely as possible to reality. These test methods should be independent of the composition of the boards (eg. type of adhesive). In addition, the different test methods actually used in the EC member countries in the field of moisture resistant boards will be included in order to establish the relationship between the traditional test methods and the new EN methods for assessing moisture resistant wood-based panels. Apart from these material performance tests, additional test methods are required for production control and third party quality inspection, which will allow a continuous monitoring of the conformity of the products. The research results will form the basis for a new glue-independent test methodology for the determination of moisture resistance of wood-based panels and thereby for the completion of the relevant EN standards.

Sub-project 2 : Development of test methods for creep, shear and other physical properties

The main objective of sub-project 2 is to determine the relationship between different test methods for a range of mechanical and physical properties not included in sub-project 1. This includes:-

a) the effect of the specimen size difference between test methods used for determining characteristic mechanical properties and those used in quality control

b) the effect of specimen size upon measured creep performance and the development of a test method for measuring creep in shear

c) the relationship between different test methods for shear modulus

d) the development of test methods for various other physical properties related to the requirements of the Construction Products Directive.

The results will be used to support the development of the relevant CEN standards for assessing the properties of wood based materials.

Sub-project 3 : Development of performance assessment procedures for floors and roofs containing wood-based panels

The main objective of sub-project 3 is to develop realistic performance test methods for uses of panel products in floors and roofs and to generate authoritative test data for a range of products commonly used in such applications. The results will be used to support the development of CEN performance test methods for floors and roofs as an alternative to design by calculation.

Call for proposal

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Coordinator

Timber Research and Development Association (TRADA)
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Stocking Lane Hughenden Valley
HP14 4ND High Wycombe
United Kingdom

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Participants (11)