ENV 12038:2002
(Main)Durability of wood and wood-based products - Wood-based panels - Method of test for determining the resistance against wood-destroying basidiomycetes
Durability of wood and wood-based products - Wood-based panels - Method of test for determining the resistance against wood-destroying basidiomycetes
This European Prestandard specifies a method for assessing the resistance of wood-based panel products to attack by wood-destroying basidiomycete fungi growing in pure culture.
The method is applicable to uncoated, rigid wood-based panel products. It is applicable to the determination of the decay resistance of wood-based panel products:
- made from naturally durable materials;
- made from materials treated with preservatives prior to manufacture;
- treated with a preservative which is introduced during manufacture, for example as an additive to the adhesive;
- treated with preservative after manufacture.
NOTE 1 This method can be used in conjunction with an appropriate ageing procedure, for example EN 73 or EN 84.
NOTE 2 Wood-based panel products that have received a preservative treatment after manufacture can be susceptible to attack through the cut edges of the test specimens and the decay resistance indicated can be less than that of complete panels used in service.
Dauerhaftigkeit von Holz und Holzwerkstoffen - Holzwerkstoffplatten - Bestimmung der Beständigkeit gegen holzzerstörende Basidiomyceten
Diese Europäische Vornorm legt ein Verfahren für die Bewertung der Beständigkeit von Holzwerkstoffplatten gegen den Angriff von holzzerstörenden, in Reinkultur wachsenden Basidiomyceten fest.
Das Verfahren ist für unbeschichtete feste Holzwerkstoffplatten anwendbar. Es ist anwendbar für die Bestimmung der Fäulnisbeständigkeit von Holzwerkstoffplatten:
¾ die aus natürlich dauerhaften Materialien hergestellt wurden;
¾ die aus Materialien hergestellt wurden, die zuvor mit Holzschutzmitteln wurden;
¾ die mit einem Holzschutzmittel behandelt wurden, das während der Herstellung eingebracht wurde, z. B. als Zusatzstoff zu einem Klebstoff;
¾ die nach der Herstellung mit einem Holzschutzmittel behandelt wurden.
ANMERKUNG 1 Das Verfahren kann in Verbindung mit einer geeigneten Alterungsbeanspruchung, z. B nach EN 73 oder EN 84, angewendet werden.
ANMERKUNG 2 Nach der Herstellung mit einem Holzschutzmittel behandelte Holzwerkstoffplatten können überdie Schnittkanten der Prüfkörper für einen Pilzangriff zugänglich sein, und die in der Prüfung gezeigte Fäulnisbeständigkeit kann geringer sein als die im Gebrauch auftretende der vollständigen Platten.
Durabilité du bois et des matériaux dérivés du bois - Panneaux à base de bois - Méthode d'essai pour déterminer la résistance aux champignons basidiomycètes lignivores
Cette Prénorme européenne prescrit une méthode d'évaluation de la résistance des panneaux à base de bois à l'attaque des champignons basidiomycètes lignivores en culture pure.
La méthode est applicable aux panneaux à base de bois rigides et non revêtus. Elle est applicable à la détermination de la résistance à la pourriture des panneaux à base de bois :
fabriqués à partir de matériaux naturellement durables ;
fabriqués à partir de matériaux traités avec des produits de préservation avant leur fabrication ;
traités avec un produit de préservation introduit en cours de fabrication, par exemple un additif à la colle ;
traités avec un produit de préservation après la fabrication.
NOTE 1 Cette méthode peut être utilisée conjointement avec une épreuve de vieillissement adaptée, par exemple l'EN 73 ou l'EN 84.
NOTE 2 Les panneaux à base de bois traités avec un produit de préservation après leur fabrication peuvent être sensibles à une attaque par les chants des éprouvettes d'essai et montrer une résistance à la pourriture inférieure à celle des panneaux entiers utilisés en service.
Durability of wood and wood-based products - Wood-based panels - Method of test for determining the resistance against wood-destroying basidiomycetes
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2004
Durability of wood and wood-based products - Wood-based panels - Method of
test for determining the resistance against wood-destroying basidiomycetes
Durability of wood and wood-based products - Wood-based panels - Method of test for
determining the resistance against wood-destroying basidiomycetes
Dauerhaftigkeit von Holz und Holzwerkstoffen - Holzwerkstoffplatten - Bestimmung der
Beständigkeit gegen holzzerstörende Basidiomyceten
Durabilité du bois et des matériaux dérivés du bois - Panneaux a base de bois - Méthode
d'essai pour déterminer la résistance aux champignons basidiomycetes lignivores
Ta slovenski standard je istoveten z: ENV 12038:2002
ICS:
79.060.01 /HVQHSORãþHQDVSORãQR Wood-based panels in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN PRESTANDARD
ENV 12038
PRÉNORME EUROPÉENNE
EUROPÄISCHE VORNORM
March 2002
ICS 79.060.01 Supersedes ENV 12038:1996
English version
Durability of wood and wood-based products - Wood-based
panels - Method of test for determining the resistance against
wood-destroying basidiomycetes
Durabilité du bois et des matériaux dérivés du bois - Dauerhaftigkeit von Holz und Holzwerkstoffen -
Panneaux à base de bois - Méthode d'essai pour Holzwerkstoffplatten - Bestimmung der Beständigkeit
déterminer la résistance aux champignons basidiomycètes gegen holzzerstörende Basidiomyceten
lignivores
This European Prestandard (ENV) was approved by CEN on 23 December 2001 as a prospective standard for provisional application.
The period of validity of this ENV is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the ENV can be converted into a European Standard.
CEN members are required to announce the existence of this ENV in the same way as for an EN and to make the ENV available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final
decision about the possible conversion of the ENV into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. ENV 12038:2002 E
worldwide for CEN national Members.
Contents
page
Foreword.4
Introduction .5
1 Scope .6
2 Normative references .6
3 Term and definition.6
4 Principle.6
5 Test materials.7
5.1 Biological material .7
5.2 Other materials and reagents .8
5.3 Apparatus .9
6 Test product .9
6.1 General.9
6.2 Test specimen preparation .10
7 Numbers of test specimens.10
7.1 Test product specimens.10
7.2 Virulence control specimens.10
7.3 Size control specimens .10
8 Procedure .11
8.1 Pre-conditioning.11
8.2 Initial dry mass.11
8.3 Sterilization of test specimens .12
8.4 Preparation of the culture vessels .12
8.5 Inoculation.12
8.6 Exposure of test specimens .12
8.7 Culture conditions and duration of the test .13
8.8 Assessment of the test.13
9 Validity of the test .14
10 Assessment of results.14
11 Test report .14
Annex A (informative) Test fungi .16
A.1 General information on maintenance and acquisition of test strains.16
A.2 Maintenance and treatment of test fungi.16
A.3 Information regarding obligatory fungi .16
Annex B (informative) Recommended but non-comprehensive list of optional fungi.18
Annex C (informative) Culture vessels.19
Annex D (normative) Methods of sterilization.20
D.1 Ionizing radiation .20
D.2 Steam .20
Annex E (normative) Calculation of the decay susceptibility index (DSI).21
E.1 Principle.21
E.2 Calculation.21
Annex F (informative) Example of a test report.22
Bibliography .25
Foreword
This document ENV 12038:2002 has been prepared by CEN /TC 38 "Durability of wood and wood-based
products", the secretariat of which is held by AFNOR.
This document supersedes ENV 12038:1996.
Annexes A, B, C and F are informative.
Annexes D and E are normative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this European Prestandard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
Introduction
This European Prestandard describes a laboratory test method in which small samples of the wood-based panel
product under test are exposed to attack by a range of wood-destroying basidiomycete fungi in pure culture. The
thickness of the test specimens varies, since it is dictated by the thickness of the wood-based panel product under
test. In order to make comparisons of the decay resistance of wood-based panel products of different thicknesses,
solid wood specimens of the same dimensions as the wood-based panel product test specimens are included. The
effect of constituents giving temporary protection is avoided by testing after pre-conditioning of the cut specimens in
a freely ventilated environment. The test method also includes a minimum moisture uptake requirement.
The procedures described in this prestandard method are intended to be carried out by suitably trained and/or
supervised specialists. Appropriate safety precautions should be observed throughout the use of this prestandard.
1 Scope
This European Prestandard specifies a method for assessing the resistance of wood-based panel products to
attack by wood-destroying basidiomycete fungi growing in pure culture.
The method is applicable to uncoated, rigid wood-based panel products. It is applicable to the determination of the
decay resistance of wood-based panel products:
made from naturally durable materials;
made from materials treated with preservatives prior to manufacture;
treated with a preservative which is introduced during manufacture, for example as an additive to the adhesive;
treated with preservative after manufacture.
NOTE 1 This method can be used in conjunction with an appropriate ageing procedure, for example EN 73 or EN 84.
NOTE 2 Wood-based panel products that have received a preservative treatment after manufacture can be susceptible to
attack through the cut edges of the test specimens and the decay resistance indicated can be less than that of complete panels
used in service.
2 Normative references
This European Prestandard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Prestandard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 73, Wood preservatives - Accelerated ageing tests of treated wood prior to biological testing - Evaporative
ageing procedure.
EN 84, Wood preservatives - Accelerated ageing tests of treated wood prior to biological testing - Leaching
procedure.
EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987).
3 Term and definition
For the purposes of this European Prestandard, the following term and definition apply.
3.1
supplier
the sponsor of the test
4 Principle
Specimens prepared from the wood-based panel product(s) under test, after pre-conditioning, and control
specimens of defined function are exposed to attack by pure cultures of wood-destroying basidiomycete fungi.
After a prescribed period of incubation under defined conditions, the loss in dry mass of the specimens is used as
the criterion for determining the extent of attack. This, in comparison with the loss in mass of the size control
specimens, is used to estimate the resistance of the wood-based panel product(s) to attack by the test fungi.
5 Test materials
5.1 Biological material
5.1.1 Test fungi
5.1.1.1 Obligatory test fungi for all types of panel products (see also annex A):
Coniophora puteana (Schumacher ex Fries) Karsten (BAM Ebw. 15)
Loss in mass of Scots pine sapwood virulence control specimens in16 weeks: a mass fraction of minimum 20 %
Pleurotus ostreatus (Jacquin ex Fries ) Quélet (FPRL 40C)
Loss in mass of
...
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