Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification and performance requirements

This European Standard establishes a classification for phenolic and aminoplastic polycondensation adhesives according to their suitability for use for load-bearing timber structures in defined climatic exposure conditions, and specifies performance requirements for such adhesives for the factory manufacture or factory-like manufacturing conditions of load-bearing timber structures only.
This European Standard only specifies the performance of an adhesive for use in an environment corresponding to the defined conditions.
The performance requirements of this European Standard apply to the adhesive only, not to the timber structure. This European Standard does not cover the performance of adhesives for on-site gluing (except for factory-like conditions) nor the production of wood-based panels, except solid wood panels, or modified and stabilised wood with considerably reduced swelling and shrinkage properties, e.g. such as acetylated wood, heat treated wood and polymer impregnated wood.
This European Standard is primarily intended for the use of adhesive manufacturers and for the use in timber structures bonded with adhesives, to assess or control the quality of adhesives. The requirements apply to the type testing of the adhesives. Production control activities are outside the scope of this European Standard.
Adhesives meeting the requirements of this European Standard are adequate for use in a load-bearing timber structure, provided that the bonding process has been carried out according to an appropriate product standard.

Klebstoffe, Phenoplaste und Aminoplaste, für tragende Holzbauteile - Klassifizierung und Leistungsanforderungen

Diese Europäische Norm stellt ein Klassifizierungssystem für Polykondensationsklebstoffe auf Phenoplast- und Aminoplastbasis entsprechend deren Eignung zur Verwendung für tragende Holzbauteile unter vorgegebenen Klimabedingungen auf und legt die Leistungsanforderungen an derartige Klebstoffe ausschließlich zur werksmäßigen Herstellung oder Herstellung unter werksähnlichen Bedingungen von tragenden Holzbauteilen fest.
Diese Europäische Norm legt nur das Leistungsverhalten eines Klebstoffs für den Einsatz in einer Umgebung fest, die den festgelegten Bedingungen entspricht.
Die Leistungsanforderungen dieser Europäischen Norm gelten lediglich für den Klebstoff, nicht für das Holzbauteil. Diese Europäische Norm behandelt weder das Leistungsverhalten von Klebstoffen für die Vor-Ort-Verklebung (ausgenommen bei werksähnlichen Bedingungen) noch die Produktion von Holzwerkstoffen, ausgenommen Massivholzplatten. Sie gilt nicht für modifiziertes und vergütetes Holz mit beträchtlich verringerten Quellungs- und Schwindungseigenschaften, wie z. B. acetyliertes Holz, wärmebehandeltes Holz und mit Kunstharz imprägniertes Holz.
Diese Europäische Norm ist im Wesentlichen für die Anwendung durch die Hersteller der Klebstoffe und zur Beurteilung oder Überprüfung der Qualität der Klebstoffe bei verklebten Holzbauteilen vorgesehen. Die Anforderungen gelten für die Typprüfung von Klebstoffen. Aktivitäten hinsichtlich der Produktionskontrolle gehören nicht zum Anwendungsbereich dieser Europäischen Norm.
Klebstoffe, die die Anforderungen dieser Europäischen Norm erfüllen, sind für die Verwendung in tragenden Holzbauteilen geeignet, vorausgesetzt, dass der Verklebungsvorgang nach einer entsprechenden Produktnorm vorgenommen wurde.

Adhésifs de nature phénolique et aminoplaste, pour structures portantes en bois - Classification et exigences de performance

La présente Norme européenne établit une classification des adhésifs de polycondensation de type phénolique ou aminoplaste en fonction de leur aptitude à l'emploi dans les structures portantes en bois dans des conditions d'exposition climatique définies ; elle spécifie les exigences de performance applicables à ces adhésifs uniquement lorsqu'ils sont utilisés pour la fabrication en usine de structures portantes en bois, ou dans des conditions similaires à la fabrication en usine.
La présente Norme européenne spécifie les performances de l'adhésif uniquement lorsqu'il est utilisé dans un environnement correspondant aux conditions définies.
Les exigences de performance de la présente Norme européenne ne s'appliquent qu'à l'adhésif ; elles ne s'appliquent pas à la structure en bois. La présente Norme européenne n'a pas pour objet la performance des adhésifs utilisés pour le collage sur site (à l'exception des conditions similaires à la fabrication en usine) ou pour la fabrication de panneaux à base de bois, à l'exception des panneaux en bois massif, ou pour le bois modifié et stabilisé ayant une propension considérablement réduite au gonflement et au rétrécissement, comme par exemple le bois acétylé, le bois traité à la chaleur et le bois imprégné de polymère.
La présente Norme européenne s'adresse avant tout aux fabricants d'adhésifs pour leur permettre, dans le domaine des structures en bois collées, d'évaluer ou de contrôler la qualité des adhésifs. Les exigences s’appliquent aux essais de type des adhésifs. Les activités de contrôle de la production ne relèvent pas du domaine d’application de la présente Norme européenne.
Un adhésif répondant aux exigences définies dans la présente Norme européenne se comportera de manière satisfaisante dans une structure portante en bois, pour autant que les opérations de collage aient été effectuées en référence à une norme de produit appropriée.

Lepila na osnovi fenolov in aminoplastov za nosilne lesene konstrukcije - Razvrstitev in zahteve

General Information

Status
Withdrawn
Publication Date
08-Oct-2013
Withdrawal Date
31-Oct-2017
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
01-Nov-2017

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SLOVENSKI STANDARD
SIST EN 301:2014
01-april-2014
1DGRPHãþD
SIST EN 301:2006
Lepila na osnovi fenolov in aminoplastov za nosilne lesene konstrukcije -
Razvrstitev in zahteve

Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification

and performance requirements

Klebstoffe, Phenoplaste und Aminoplaste, für tragende Holzbauteile - Klassifizierung und

Leistungsanforderungen

Adhésifs de nature phénolique et aminoplaste, pour structures portantes en bois -

Classification et exigences de performance
Ta slovenski standard je istoveten z: EN 301:2013
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
SIST EN 301:2014 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 301:2014
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SIST EN 301:2014
EUROPEAN STANDARD
EN 301
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2013
ICS 83.180 Supersedes EN 301:2006
English Version
Adhesives, phenolic and aminoplastic, for load-bearing timber
structures - Classification and performance requirements

Adhésifs de nature phénolique et aminoplaste, pour Klebstoffe, Phenoplaste und Aminoplaste, für tragende

structures portantes en bois - Classification et exigences de Holzbauteile - Klassifizierung und Leistungsanforderungen

performance
This European Standard was approved by CEN on 19 July 2013.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 301:2013: E

worldwide for CEN national Members.
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SIST EN 301:2014
EN 301:2013 (E)
Contents Page

Foreword ..............................................................................................................................................................3

Introduction .........................................................................................................................................................4

1 Scope ......................................................................................................................................................5

2 Normative references ............................................................................................................................5

3 Terms and definitions ...........................................................................................................................6

4 Classification ..........................................................................................................................................7

5 Requirements .........................................................................................................................................9

5.1 General ....................................................................................................................................................9

5.2 Tensile shear test................................................................................................................................ 10

5.3 Delamination test ................................................................................................................................ 11

5.4 Fibre damage test ............................................................................................................................... 11

5.5 Shrinkage test ..................................................................................................................................... 12

5.6 Static load test .................................................................................................................................... 12

5.7 Type testing of separate application finger joint adhesive ............................................................ 12

6 Working properties of the adhesive.................................................................................................. 12

6.1 General ................................................................................................................................................. 12

6.2 Physical properties of adhesive prepared for use .......................................................................... 12

6.3 Use of the adhesive ............................................................................................................................ 13

Annex A (normative) Delamination test for finger joints with separate spread of adhesive and

finger .................................................................................................................................................... 14

A.1 Production of the specimens ............................................................................................................ 14

A.2 Testing ................................................................................................................................................. 14

Bibliography ..................................................................................................................................................... 16

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SIST EN 301:2014
EN 301:2013 (E)
Foreword

This document (EN 301:2013) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the

secretariat of which is held by AENOR.

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by April 2014, and conflicting national standards shall be withdrawn at the

latest by April 2014.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 301:2006.
Compared to EN 301:2006 the following changes have been made:

a) three subclasses for adhesives have been added: for general purpose, for finger jointing and for gap

filling purpose;

b) further classification of adhesives according to temperature resistance and for mixed and separate

application of adhesive and hardener specified;
c) application of Type II adhesives limited to service class 1;
d) provisions for small modifications of already approved adhesives;
e) requirements for thick glue line in the range of 0,3 mm to 2,0 mm;
f) provisions for delamination tests of hardwood added;
g) pH value for performance of fibre damage test reduced;

h) additional tests for static loads and for separate application of finger joint adhesives.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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SIST EN 301:2014
EN 301:2013 (E)
Introduction

This document is one of a series of standards dealing with phenolic and aminoplastic adhesives for use with

timber structures, and is published in support of product standards for load-bearing timber structures in

connection with EN 1995-1-1 Eurocode 5: Design of timber structures – Part 1-1: General – Common rules

and rules for buildings. The series consists of one standard for classification and performance requirements

(EN 301), five test methods (EN 302, Parts 1 to 4 and EN 15416-2) used to assess the performance of

adhesives after specified heat and humidity treatments, and three test methods (EN 302, Parts 5 to 7) to

characterise the working properties of the adhesive.

SAFETY STATEMENT — Persons using this document should be familiar with the normal laboratory practice,

if applicable. This document does not purport to address all of the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure

compliance with any regulatory conditions.

ENVIRONMENTAL STATEMENT — It is understood that some of the material permitted in this standard may

have a negative environmental impact. As technological advantages lead to acceptable alternatives for these

materials, they will be eliminated from this standard to the greatest extent possible.

At the end of the test, the user of the standard should take care to carry out an appropriate disposal of the

wastes, according to local regulations.
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SIST EN 301:2014
EN 301:2013 (E)
1 Scope

This European Standard establishes a classification for phenolic and aminoplastic polycondensation

adhesives according to their suitability for use for load-bearing timber structures in defined climatic exposure

conditions, and specifies performance requirements for such adhesives for the factory manufacture or factory-

like manufacturing conditions of load-bearing timber structures only.

This European Standard only specifies the performance of an adhesive for use in an environment

corresponding to the defined conditions.

The performance requirements of this European Standard apply to the adhesive only, not to the timber

structure. This European Standard does not cover the performance of adhesives for on-site gluing (except for

factory-like conditions) nor the production of wood-based panels, except solid wood panels, or modified and

stabilised wood with considerably reduced swelling and shrinkage properties, e.g. such as acetylated wood,

heat treated wood and polymer impregnated wood.

This European Standard is primarily intended for the use of adhesive manufacturers and for the use in timber

structures bonded with adhesives, to assess or control the quality of adhesives. The requirements apply to the

type testing of the adhesives. Production control activities are outside the scope of this European Standard.

Adhesives meeting the requirements of this European Standard are adequate for use in a load-bearing timber

structure, provided that the bonding process has been carried out according to an appropriate product

standard.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

EN 302-1, Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of longitudinal

tensile shear strength

EN 302-2, Adhesives for load-bearing timber structures - Test methods - Part 2: Determination of resistance to

delamination

EN 302-3, Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of

acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength

EN 302-4, Adhesives for load-bearing timber structures - Test methods - Part 4: Determination of the effects

of wood shrinkage on the shear strength

EN 408, Timber structures - Structural timber and glued laminated timber - Determination of some physical

and mechanical properties
EN 923, Adhesives - Terms and definitions
EN 1245, Adhesives - Determination of pH

EN 1995-1-1, Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for

buildings
EN 12092, Adhesives - Determination of viscosity

EN 13183-2, Moisture content of a piece of sawn timber - Part 2: Estimation by electrical resistance method

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SIST EN 301:2014
EN 301:2013 (E)

EN 13183-3, Moisture content of a piece of sawn timber - Part 3: Estimation by capacitance method

EN 14080, Timber structures - Glued laminated timber and glued solid timber - Requirements

EN 15416-2:2007, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test

methods - Part 2: Static load test of multiple bondline specimens in compression shear

EN 15425:2008, Adhesives - One component polyurethane for load bearing timber structures - Classification

and performance requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 923 and the following apply.

3.1
aminoplastic resin

thermosetting synthetic resin derived from a condensation reaction of the –NH groups or –NH groups of

amines or amides with aldehydes
3.2
phenolic resin

thermosetting synthetic resin derived from a condensation reaction of a phenol with an aldehyde

3.3
polycondensation adhesive

adhesive mixture made from a resin formed by a polymerisation reaction involving the elimination of water,

usually with a hardener
Note 1 to entry: Such adhesives usually also contain extenders and/or fillers.
3.4
service class 1

climatic conditions characterised by a moisture content in the materials corresponding to a temperature of

20 °C and the relative humidity of the surrounding air only exceeding 65 % for a few weeks per year

Note 1 to entry: In service class 1, which comprises typical indoor conditions, the average moisture content in most

softwoods will not exceed 12 %.
[SOURCE: EN 1995-1-1:2004, 2.3.1.3]
3.5
service class 2

climatic conditions characterised by a moisture content in the materials corresponding to a temperature of

20 °C and the relative humidity of the surrounding air only exceeding 85 % for a few weeks per year

Note 1 to entry: In service class 2, to which most covered exterior conditions belong, the average moisture content in

most softwoods will not exceed 20 %.
[SOURCE: EN 1995-1-1:2004, 2.3.1.3]
3.6
service class 3
climatic conditions leading to higher moisture contents than in service class 2
Note 1 to entry: Exterior conditions typically belong to service class 3.
[SOURCE: EN 1995-1-1:2004, 2.3.1.3, modified – Note 1 to entry has been added.]
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SIST EN 301:2014
EN 301:2013 (E)
3.7
glue line
adhesive layer between the wood members
3.8
thick glue line

glue line of nominal thickness in the range of 0,3 mm to 2,0 mm at the time of bonding

Note 1 to entry: Thick glue lines are achieved by using spacers, grooves or similar devices with a thickness of 0,3 mm

to 2,0 mm when two plain members are glued together.
3.9
close contact glue line
glue line of thickness maximum 0,1 mm

Note 1 to entry: Close contact glue line is achieved by pressing together two plane wood members with a clamping

pressure of (0,8 ± 0,1) N/mm without grooves, spacers or similar devices.
4 Classification

Adhesives (general purpose, finger jointing or gap filling) for structural purposes shall produce joints of such

strength and durability that the integrity of the bond is maintained in the assigned service class throughout the

expected life of
...

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