EN 302-1:2023
(Main)Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of longitudinal tensile shear strength
Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of longitudinal tensile shear strength
This document specifies a method for determining the shear strength of adhesive bonds in close contact glue line and thick glue line.
It is applicable to the following applications:
a) for assessing the compliance of adhesives with EN 301, EN 15425, EN 16254, EN 17334 and EN 17418;
b) for assessing the suitability and quality of adhesives for load-bearing timber structures.
This test is intended primarily to obtain performance data for the classification of adhesives for load-bearing timber structures according to their suitability for use in defined climatic environments.
This method is not intended for use to provide for structural design and does not necessarily represent the performance of the bonded member in service.
Klebstoffe für tragende Holzbauteile - Prüfverfahren - Teil 1: Bestimmung der Längszugscherfestigkeit
Dieses Dokument legt ein Verfahren zur Bestimmung der Scherfestigkeit von Klebstoffverbindungen in dünnen und dicken Klebstofffugen fest.
Es ist für folgende Anwendungsfälle anwendbar:
a) zur Beurteilung der Übereinstimmung von Klebstoffen mit EN 301, EN 15425, EN 16254, EN 17334 und EN 17418;
b) zur Beurteilung der Eignung und Qualität von Klebstoffen für tragende Holzbauteile.
Diese Prüfung ist hauptsächlich dafür vorgesehen, Leistungsdaten für die Klassifizierung von Klebstoffen für tragende Holzbauteile entsprechend ihrer Eignung zur Verwendung in festgelegten klimatischen Umgebungen zu erhalten.
Dieses Verfahren ist nicht dafür vorgesehen, Bemessungswerte bereitzustellen und gibt nicht zwangsläufig die Leistungsfähigkeit des verklebten Bauteils im Gebrauch wieder.
Adhésifs pour structures portantes en bois - Méthodes d’essais - Partie 1 : Détermination de la résistance au cisaillement en traction longitudinale
Le présent document spécifie une méthode qui permet de déterminer la résistance au cisaillement des jonctions adhésives par joints de colle mince et épais.
Cette méthode s’applique dans les cas suivants :
a) évaluation de la conformité des adhésifs aux EN 301, EN 15425, EN 16254, EN 17334 et EN 17418 ;
b) évaluation de l’aptitude à l’emploi et de la qualité des adhésifs pour les structures portantes en bois.
Cet essai vise principalement à obtenir des données de performance en vue de la classification des adhésifs pour structures portantes en bois en fonction de leur aptitude à l’utilisation dans des environnements climatiques définis.
Cette méthode n’est pas destinée à être utilisée pour le calcul des structures et ne représente pas nécessairement les performances en service de l’élément collé.
Lepila za nosilne lesene konstrukcije - Preskusne metode - 1. del: Ugotavljanje vzdolžne natezne strižne obremenitve
Ta dokument določa metodo za ugotavljanje strižne obremenitve strjenega lepila pri zelo tankem in pri debelem sloju lepljenega stika.
Metoda se uporablja:
a) za oceno skladnosti lepil s standardi EN 301, EN 15425, EN 16254, EN 17334 in EN 17418;
b) za oceno ustreznosti in kakovosti lepil za nosilne lesene konstrukcije.
Ta preskus je namenjen zlasti pridobivanju podatkov o lastnostih za razvrstitev lepil za nosilne lesene konstrukcije glede na njihovo ustreznost za uporabo v opredeljenih podnebnih okoljih.
Ta metoda ni namenjena za zagotavljanje podatkov za konstrukcijsko zasnovo, pri čemer ne predstavlja nujno lastnosti zlepljenega elementa v uporabi.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2023
Lepila za nosilne lesene konstrukcije - Preskusne metode - 1. del: Ugotavljanje
vzdolžne natezne strižne obremenitve
Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of
longitudinal tensile shear strength
Klebstoffe für tragende Holzbauteile - Prüfverfahren - Teil 1: Bestimmung der
Längszugscherfestigkeit
Adhésifs pour structures en bois - Méthodes d'essais - Partie 1: Détermination de la
résistance du joint au cisaillement en traction longitudinale
Ta slovenski standard je istoveten z: EN 302-1:2023
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 302-1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2023
EUROPÄISCHE NORM
ICS 83.180 Supersedes EN 302-1:2013
English Version
Adhesives for load-bearing timber structures - Test
methods - Part 1: Determination of longitudinal tensile
shear strength
Adhésifs pour structures portantes en bois - Méthodes Klebstoffe für tragende Holzbauteile - Prüfverfahren -
d'essais - Partie 1 : Détermination de la résistance au Teil 1: Bestimmung der Längszugscherfestigkeit
cisaillement en traction longitudinale
This European Standard was approved by CEN on 18 December 2022.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 302-1:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols . 7
5 Principle . 8
6 Apparatus . 8
7 Method . 8
7.1 Preparation of panels . 8
7.2 Preparation of the bonded assemblies . 9
7.2.1 Wood adherents and bonding procedure . 9
7.2.2 Close contact glue line . 10
7.2.3 Thick glue lines (gap joints) . 10
7.3 Preparation of test pieces . 10
7.4 Number of test pieces . 11
7.5 Treatment prior to tensile shear testing . 11
7.6 Test procedure . 12
8 Expression of results . 13
9 Test report . 13
9.1 The adhesive . 13
9.2 Preparation of test pieces and testing procedure . 13
9.3 Test results . 14
European foreword
This document (EN 302-1:2023) has been prepared by Technical Committee CEN/TC 193 “Adhesives”,
the secretariat of which is held by UNE.
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 August 2023, and conflicting national standards shall
be withdrawn at the latest by August 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 302-1:2013.
a) the list of standards in the Introduction has been updated;
b) two new standards, EN 17334 and EN 17418, have been included in the Scope;
c) thick glue line is now prepared with thicknesses between 0,3 mm and 4,0 mm depending on type of
adhesive;
d) Table 1 — Type and duration of treatment prior to shear testing; A6, A7 and A8 duration has been
changed from 72 h to 24 h;
e) a new indent has been added to 9.2, h) location of the grooves for the 4 mm thick glue lines;
f) the Bibliography has been deleted.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Introduction
This document is one of a series dealing with adhesives for use with timber structures, and is published
in support of the EN 1995 series, Eurocode 5: Design of timber structures. The series consists of five
classification and performance requirements for adhesives for load-bearing timber structures, phenolic
and aminoplastic adhesives (EN 301), one component polyurethane adhesives (EN 15425), emulsion
polymer isocyanate adhesives (EN 16254), two component epoxy and polyurethane adhesives for glued
in rods (EN 17334) and for on-site repair of cracked timber structures (EN 17418) and all together
twelve test methods (EN 302-1, EN 302-2, EN 302-3, EN 302-4, EN 302-5, EN 302-6, EN 302-7 and
EN 302-8 and EN 15416-1, EN 15416-3, EN 15416-4 and EN 15416-5).
These European Standards have the following titles:
EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures — Classification and
performance requirements
EN 302, Adhesives for load-bearing timber structures — Test methods:
— Part 1: Determination of longitudinal tensile shear strength
— Part 2: Determination of resistance to delamination
— Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity
cycling on the transverse tensile strength
— Part 4: Determination of the effects of wood shrinkage on the shear strength
— Part 5: Determination of maximum assembly time under referenced conditions
— Part 6: Determination of the minimum pressing time under referenced conditions
— Part 7: Determination of the working life under referenced conditions
— Part 8: Static load test of multiple bond line specimens in compression shear
EN 15416, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test
methods:
— Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with
specimens perpendicular to the glue line (Glass house test)
— Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending shear
— Part 4: Determination of open assembly time under referenced conditions
— Part 5: Determination of minimum pressing time under referenced conditions
EN 15425, Adhesives — One component polyurethane (PUR) for load-bearing timber structures —
Classification and performance requirements
EN 16254, Adhesives — Emulsion polymer isocyanate (EPI) for load-bearing timber structures —
Classification and performance requirements
EN 17334, Glued-in rods in glued structural timber products — Testing, requirements and bond shear
strength classification
EN 17418, Two-component epoxy and polyurethane adhesives for on-site repair of cracked timber
structures — Testing, requirements and repair strength verification
Safety statement
Persons using this document should be familiar with the normal laboratory practice, if applicable. This
document cannot 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 can have a negative environmental
impact. As technological advantages lead to better alternatives for these materials, they will be
eliminated from this standard to the greatest extent possible.
At the end of the test, it is recommended that the users of the standard take care to carry out an
appropriate disposal of the wastes, according to local regulations.
1 Scope
This document specifies a method for determining the shear strength of adhesive bonds in close contact
glue line and thick glue line.
It is applicable to the following applications:
a) for assessing the compliance of adhesives with EN 301, EN 15425, EN 16254, EN 17334 and
EN 17418;
b) for assessing the suitability and quality of adhesives for load-bearing timber structures.
This test is intended primarily to obtain performance data for the classification of adhesives for load-
bearing timber structures according to their suitability for use in defined climatic environments.
This method is not intended for use to provide for structural design and does not necessarily represent
the performance of the bonded member in service.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification and
performance requirements
EN 384:2016+A2:2022, Structural timber - Determination of characteristic values of mechanical
properties and density
EN 923, Adhesives - Terms and definitions
EN 15425, Adhesives - One component polyurethane (PUR) for load-bearing timber structures -
Classification and performance requirements
EN 16254, Adhesives - Emulsion polymerized isocyanate (EPI) for load-bearing timber structures -
Classification and performance requirements
EN 17334, Glued-in rods in glued structural timber products - Testing, requirements and bond shear
strength classification
EN 17418, Two-component epoxy and polyurethane adhesives for on-site repair of cracked timber
structures - Testing, requirements and repair strength verification
ISO 5893, Rubber and plastics test equipment — Tensile, flexural and compression types (constant rate of
traverse) — Specification
ISO 6344-2, Coated abrasives — Determination and designation of grain size distribution — Part 2:
Macrogrit sizes P12 to P220
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