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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.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

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

Participants (11)

Building Research Establishment (BRE)
United Kingdom
Address
Bucknalls Lane Garston
WD2 7JR Watford
CENTRE TECHNIQUE DE L'INDUSTRIE DU BOIS
Belgium
Address
Chaussee D'alsemberg 830
1180 Bruxelles
Centre Technique du Bois et de l'Ameublement (CTBA)
France
Address
Allée De Boutaut
33028 Bordeaux
DANISH TECHNOLOGICAL INST.
Denmark
Address
Gregersensvej P.o. Box141
2630 Taastrup
FACHHOCHSCHULE ROSENHEIM
Germany
Address
Marienbergerstraße 26
8200 Rosenheim
FEDERAL INSTITUTE FOR MATERIAL RESEARCH AND TESTING
Germany
Address
87,Unter Der Eichen 87
12205 Berlin
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Germany
Address
Bienroder Weg 54 E
38108 Braunschweig
Furniture Industry Research Association
United Kingdom
Address
Maxwell Road
SG1 2EW Stevenage - Hertfordshire
Istituto per la Tecnologia del Legno
Italy
Address
Via Biasi 75 San Michele All'adige
38010 Trento
TNO - BUILDING AND CONSTRUCTION RESEARCH
Netherlands
Address
P.o.box 49
2600 AA Delft
VTT - TECHNICAL RESEARCH CENTRE OF FINLAND
Finland
Address
P.o. Box 207
02157 Espoo