SIST EN 302-8:2017

Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of multiple bond line specimens in compression shear

This European Standard specifies a method of determining the ability of adhesive bonds to resist static load. It is applicable to adhesives used in load bearing timber structures.
It is suitable for the following applications:
a)   for assessing the compliance of adhesives according to EN 301, EN 15425 and EN 16254;
b)   for assessing the suitability and quality of adhesives for load-bearing timber structures;
c)   for assessing the effect on the bond strength resulting from constant load at different climate conditions.
This method 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 to provide data for structural design, and does not necessarily represent the performance of the bonded member in service.

Klebstoffe für tragende Holzbauteile - Prüfverfahren - Teil 8: Statische Belastungsprüfung an Prüfkörpern mit mehreren Klebstofffugen bei Druck-Scherbeanspruchung

Diese Europäische Norm legt ein Verfahren zur Bestimmung der Beständigkeit von Klebstoffverbindungen gegen statische Belastung fest. Sie gilt für Klebstoffe, die für tragende Holzbauteile verwendet werden.
Das Verfahren ist für folgende Anwendungsfälle geeignet:
a)   zur Beurteilung der Übereinstimmung von Klebstoffen mit EN 301, EN 15425 und EN 16254;
b)   zur Beurteilung der Eignung und Qualität von Klebstoffen für tragende Holzbauteile;
c)   zur Beurteilung der Auswirkung von konstanter Belastung bei verschiedenen Klimabedingungen auf die Klebfestigkeit.
Dieses Verfahren dient hauptsächlich zur Bestimmung von Leistungswerten für die Klassifizierung von Klebstoffen für tragende Holzbauteile entsprechend ihrer Eignung zum Einsatz unter bestimmten Klima-bedingungen.
Dieses Verfahren ist nicht zur Bestimmung von Rechenwerten geeignet und gibt nicht zwangsläufig das Ver-halten des verklebten Bauteiles im Gebrauch wieder.

Adhésifs pour structures portantes en bois - Méthodes d'essai - Partie 8 : Essai de charge statique sur des éprouvettes à joints multiples en cisaillement par compression

La présente Norme européenne spécifie une méthode de détermination de la résistance à la charge statique des joints de colle. Cette méthode est applicable aux adhésifs utilisés sur des structures portantes en bois.
Elle convient aux applications suivantes :
a)   l'évaluation de la conformité des adhésifs aux EN 301, EN 15425 et EN 16254 ;
b)   l'évaluation de l'aptitude à l'emploi et de la qualité des adhésifs destinés aux structures portantes en bois ;
c)   l'évaluation de l'incidence d'une charge constante appliquée dans différentes conditions climatiques sur la résistance à la rupture d'un joint.
Cette méthode a pour objectif principal de permettre l'obtention de données relatives aux performances en vue de classer les adhésifs destinés aux structures portantes en bois suivant leur aptitude à l’emploi dans des conditions climatiques définies.
Elle n'est pas destinée à permettre l'obtention de données utilisables pour le calcul des structures, et ne représente pas nécessairement les performances en service du produit collé.

Lepila za nosilne lesene konstrukcije - Preskusne metode - 8. del: Preskus statične obremenitve preskušancev z več lepljenimi spoji pri tlačni strižni obremenitvi

Ta evropski standard določa metodo za ugotavljanje odpornosti lepil proti statični obremenitvi. Uporablja se za lepila za nosilne lesene konstrukcije.
Metoda se uporablja:
a) za oceno skladnosti lepil s standardi EN 301, EN 15425 in EN 16254;
b) za oceno ustreznosti in kakovosti lepil za nosilne lesene konstrukcije;
c) za oceno vpliva na sprijemno trdnost, ki je posledica neprekinjene obremenitve pri različnih podnebnih razmerah.
Ta metoda je namenjena zlasti za pridobivanje 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

• Status: Withdrawn
• Public Enquiry End Date: 09-Aug-2015
• Publication Date: 05-Feb-2017
• Withdrawal Date: 09-May-2023
• ICS: 83.180 - Adhesives
• ICS: 91.080.20 - Timber structures
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 10-May-2023
• Due Date: 02-Jun-2023
• Completion Date: 10-May-2023
• Ref Project: EN 302-8:2017 - Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of multiple bond line specimens in compression shear

Relations

• Revised: SIST EN 15416-2:2008 - 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
• Effective Date: 01-Jul-2015
• Revises: SIST EN 302-8:2023 - Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of multiple bond line specimens in compression shear
• Effective Date: 19-Jan-2023
• Replaces: SIST EN 15416-2:2008 - 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
• Effective Date: 01-Feb-2017

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 302-8:2017
01-april-2017
1DGRPHãþD
SIST EN 15416-2:2008
/HSLOD]DQRVLOQHOHVHQHNRQVWUXNFLMH3UHVNXVQHPHWRGHGHO3UHVNXVVWDWLþQH
REUHPHQLWYHSUHVNXãDQFHY]YHþOHSOMHQLPLVSRMLSULWODþQLVWULåQLREUHPHQLWYL
Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of
multiple bond line specimens in compression shear
Klebstoffe für tragende Holzbauteile - Prüfverfahren - Teil 8: Statische
Belastungsprüfung an Prüfkörpern mit mehreren Klebstofffugen bei Druck-
Scherbeanspruchung
Adhésifs pour structures portantes en bois - Méthodes d'essai - Partie 8 : Essai de
charge statique sur des éprouvettes à joints multiples en cisaillement par compression
Ta slovenski standard je istoveten z: EN 302-8:2017
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
SIST EN 302-8:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 302-8:2017

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SIST EN 302-8:2017


EN 302-8
EUROPEAN STANDARD

NORME EUROPÉENNE

January 2017
EUROPÄISCHE NORM
ICS 83.180 Supersedes EN 15416-2:2007
English Version

Adhesives for load-bearing timber structures - Test
methods - Part 8: Static load test of multiple bond line
specimens in compression shear
Adhésifs pour structures portantes en bois - Méthodes Klebstoffe für tragende Holzbauteile - Prüfverfahren -
d'essai - Partie 8 : Essai de charge statique sur des Teil 8: Statische Belastungsprüfung an Prüfkörpern mit
éprouvettes à joints multiples en cisaillement par mehreren Klebstofffugen bei Druck-
compression Scherbeanspruchung
This European Standard was approved by CEN on 30 October 2016.

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, Serbia, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 302-8:2017 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 302-8:2017
EN 302-8:2017 (E)
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Principle . 6
4 Apparatus . 6
4.1 Test jig . 6
4.2 Equipment for climate control . 9
4.3 Testing machine . 9
5 Test specimens . 9
5.1 Selection of wood . 9
5.2 Preparation of laminations . 9
5.3 Preparation of test specimens . 12
6 Test procedure . 12
6.1 Application of load . 12
6.2 Test climates . 13
6.3 Measurements and evaluation of result . 13
7 Test report . 13
Bibliography . 15

2

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SIST EN 302-8:2017
EN 302-8:2017 (E)
European foreword
This document (EN 302-8:2017) 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 July 2017, and conflicting national standards shall be
withdrawn at the latest by July 2017.
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 15416-2:2007.
Compared to EN 15416-2:2007, the following modifications have been made:
a) title has been changed;
b) EN 301 and EN 16254 are included in the scope;
c) introduction of (50 ± 2) °C and (90 ± 2) °C in Table 1, climate 1, with reference to EN 15425;
d) layout has been made in line with EN 302-1:2013 to EN 302-7:2013;
e) new drawings of the test jig with some adjusted part dimensions are included.
This document is one of a package dealing with adhesives for use with timber structures, and is
published in support to EN 1995, Eurocode 5: Design of timber structures (all parts).
The package consists of
— three classification and performance requirements for adhesives for load-bearing timber
structures; phenolic and aminoplastic adhesives (EN 301), one component polyurethane adhesives
(EN 15425) and emulsion polymerized isocyanate adhesives (EN 16254), and
— twelve test methods (EN 302 parts 1 to 8, EN 15416 parts 1, 3, 4 and 5).
These European Standards have the following titles:
— EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures — Classification and
performance requirements
— 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 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
3

---------------------- Page: 5 ----------------------

SIST EN 302-8:2017
EN 302-8:2017 (E)
— 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 302-5, Adhesives for load-bearing timber structures — Test methods — Part 5: Determination of
maximum assembly time under referenced conditions
— EN 302-6, Adhesives for load-bearing timber structures — Test methods — Part 6: Determination of
the minimum pressing time under referenced conditions
— EN 302-7, Adhesives for load-bearing timber structures — Test methods — Part 7: Determination of
the working life under referenced conditions
— EN 302-8, Adhesives for load-bearing timber structures — Test methods — Part 8: Static load test of
multiple bond line specimens in compression shear
— EN 15416-1, 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)
— EN 15416-3, Adhesives for load bearing timber structures other than phenolic and aminoplastic —
Test methods — Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in
bending shear
— EN 15416-4, Adhesives for load bearing timber structures other than phenolic and aminoplastic —
Test methods — Part 4: Determination of open assembly time under referenced conditions
— EN 15416-5, Adhesives for load bearing timber structures other than phenolic and aminoplastic —
Test methods — Part 5: Determination of minimum pressing time under referenced conditions
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
4

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SIST EN 302-8:2017
EN 302-8:2017 (E)
Introduction
Safety statement
Persons using this European Standard should be familiar with the normal laboratory practice, if
applicable. This European Standard 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 European Standard may have negative
environmental impact. As technological advantages lead to better alternatives for these materials, they
will be eliminated from this European Standard to the extent possible.
At the end of the test, it is recommended that the user of this European Standard take care to carry out
an appropriate disposal of the wastes, according to local regulation.
5
...

SLOVENSKI STANDARD
oSIST prEN 302-8:2015
01-julij-2015
/HSLOD]DQRVLOQHOHVHQHNRQVWUXNFLMH3UHVNXVQHPHWRGHGHO3UHVNXVVWDWLþQH
REUHPHQLWYHSUHVNXãDQFHY]YHþOHSOMHQLPLVSRMLSULWODþQLVWULåQLREUHPHQLWYL
Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of
multiple bond line specimens in compression shear
Klebstoffe für tragende Holzbauteile - Prüfverfahren - Teil 8: Statische
Belastungsprüfung an Prüfkörpern mit mehreren Klebstofffugen bei Druck-
Scherbeanspruchung
Adhésifs pour structures portantes en bois - Méthodes d'essai - Partie 8 : Essai de
charge statique sur des éprouvettes à joints multiples en cisaillement par compression
Ta slovenski standard je istoveten z: prEN 302-8
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
oSIST prEN 302-8:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 302-8:2015

---------------------- Page: 2 ----------------------
oSIST prEN 302-8:2015

EUROPEAN STANDARD
DRAFT
prEN 302-8
NORME EUROPÉENNE

EUROPÄISCHE NORM

April 2015
ICS 83.180 Will supersede EN 15416-2:2007
English Version
Adhesives for load-bearing timber structures - Test methods -
Part 8: Static load test of multiple bond line specimens in
compression shear
Adhésifs pour structures portantes en bois - Méthodes Klebstoffe für tragende Holzbauteile - Prüfverfahren - Teil 8:
d'essais - Partie 8 : Durée pour obtenir la rupture des Statische Belastungsprüfung an Prüfkörpern mit mehreren
éprouvettes par essais de cisaillement de compression Klebstofffugen bei Druck-Scherbeanspruchung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 193.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 302-8:2015 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 302-8:2015
prEN 302-8:2015 (E)
Contents Page
Foreword .3
Introduction .5
1 Scope .6
2 Normative references .6
3 Principle .6
4 Apparatus .6
4.1 Test jig .6
4.2 Equipment for climate control .9
4.3 Testing machine.9
5 Test specimens .9
5.1 Selection of wood .9
5.2 Preparation of laminations .9
5.3 Preparation of test specimens . 11
6 Test procedure . 12
6.1 Application of load. 12
6.2 Test climates . 12
6.3 Measurements and evaluation of result . 12
7 Expression of results and test report . 13
Bibliography . 14

2

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oSIST prEN 302-8:2015
prEN 302-8:2015 (E)
Foreword
This document (prEN 302-8:2015) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the
secretariat of which is held by AENOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15416-2:2007.
The following modifications have been made:
a) title has been changed;
b) EN 301 and EN 16254 included in the scope;
c) introduction of (50 ± 2) °C and (90 ± 2) °C in Table 1, climate 1, with reference to EN 15425;
d) layout has been made in line with EN 302-1:2013 to EN 302-7:2013;
e) new drawings of the test jig with some adjusted part dimensions are included.
This document is one of a series dealing with adhesives for use with timber structures, and is published in
support to EN 1995, Eurocode 5: Design of timber structures (all parts).
The series consists of
— three classification and performance requirements for adhesives for load-bearing timber structures;
phenolic and aminoplastic adhesives (EN 301), one component polyurethane adhesives (EN 15425) and
emulsion polymerized isocyanate adhesives (EN 16254), and
— twelves test methods (EN 302 parts 1 to 8, EN 15416 parts 1, 3, 4 and 5).
These European Standards have the following titles:
— EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification and
performance requirements
— 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 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
3

---------------------- Page: 5 ----------------------
oSIST prEN 302-8:2015
prEN 302-8:2015 (E)
— EN 302-5, Adhesives for load-bearing timber structures - Test methods - Part 5: Determination of
maximum assembly time under referenced conditions
— EN 302-6, Adhesives for load-bearing timber structures - Test methods - Part 6: Determination of the
minimum pressing time under referenced conditions
— EN 302-7, Adhesives for load-bearing timber structures - Test methods - Part 7: Determination of the
working life under referenced conditions
— EN 302-8, Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of
multiple bond line specimens in compression shear
— EN 15416-1, 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 (Glasshouse test)
— EN 15416-3, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending
shear
— EN 15416-4, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 4: Determination of open assembly time under referenced conditions
— EN 15416-5, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 5: Determination of minimum pressing time under referenced conditions
4

---------------------- Page: 6 ----------------------
oSIST prEN 302-8:2015
prEN 302-8:2015 (E)
Introduction
Safety statement
Persons using this European Standard should be familiar with the normal laboratory practice, if applicable.
This European Standard 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 European Standard may have negative
environmental impact. As technological advantages lead to better alternatives for these materials, they will be
eliminated from this European Standard to the extent possible.
At the end of the test, it is recommended that the user of this European Standard take care to carry out an
appropriate disposal of the wastes, according to local regulation.
5

---------------------- Page: 7 ----------------------
oSIST prEN 302-8:2015
prEN 302-8:2015 (E)
1 Scope
This European Standard specifies a method of determining the ability of adhesive bonds to resist static load. It
is applicable to adhesives used in load bearing timber structures.
It is suitable for the following applications:
a) for assessing the compliance of adhesives according to EN 301, EN 15425 and EN 16254;
b) for assessing the suitability and quality of adhesives for load-bea
...