1、BSI Standards PublicationBS EN 301:2013Adhesives, phenolic andaminoplastic, for load-bearing timber structures Classification and performancerequirementsBS EN 301:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 301:2013. Itsupersedes BS EN 301:2006 which is
2、 withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/52, Adhesives.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are
3、responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 76778 4ICS 83.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandard
4、s Policy and Strategy Committee on 31 October 2013.Amendments issued since publicationDate Text affectedBS EN 301:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 301 October 2013 ICS 83.180 Supersedes EN 301:2006English Version Adhesives, phenolic and aminoplastic, for load-bearing timber s
5、tructures - Classification and performance requirements Adhsifs de nature phnolique et aminoplaste, pour structures portantes en bois - Classification et exigences de performance Klebstoffe, Phenoplaste und Aminoplaste, fr tragende Holzbauteile - Klassifizierung und LeistungsanforderungenThis Europe
6、an 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 concer
7、ning 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
8、 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, Ge
9、rmany, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE
10、FR 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 worldwide for CEN national Members. Ref. No. EN 301:2013: EBS EN 301:2013EN 301:2013 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normat
11、ive 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 pro
12、perties 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
13、BS EN 301:2013EN 301:2013 (E) 3 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 e
14、ndorsement, 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 ident
15、ifying 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 ac
16、cording 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
17、 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 organiz
18、ations 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, Ma
19、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 301:2013EN 301:2013 (E) 4 Introduction This document is one of a series of standards dealing with phenolic and aminoplastic adhesives for use with timber structur
20、es, 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 (
21、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 documen
22、t 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
23、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 e
24、xtent 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. BS EN 301:2013EN 301:2013 (E) 5 1 Scope This European Standard establishes a classification for phenolic and aminoplastic polycondensa
25、tion 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. Thi
26、s 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 o
27、f 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
28、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 t
29、he 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 document
30、s, 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-
31、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 -
32、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
33、 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 f
34、or 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 BS EN 301:2013EN 301:2013 (E) 6 EN 13183-3, Moisture content of a piece of sawn timber - Part 3: Estimation by capacitance method
35、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, A
36、dhesives - 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 de
37、rived from a condensation reaction of the NH groups or NH2groups 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 polymeri
38、sation 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 relat
39、ive 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 conditi
40、ons 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 co
41、ntent 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 No
42、te 1 to entry has been added. BS EN 301:2013EN 301:2013 (E) 7 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 s
43、imilar 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
44、2without 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 l
45、ife of the structure. Two types of adhesive, I and II, are classified according to their suitability for use in different climatic conditions: Type to be used in service classes 1, 2 and 3 (EN 1995-1-1); Type to be used in service class 1 only. NOTE The application of the adhesive types in the diffe
46、rent service classes can be restricted by national regulations applicable at the end use site of the bonded timber structure. These two types of adhesive are further divided into three subclasses according to the end use: General-purpose adhesive (GP) to be used for glue lines between laminations, f
47、or finger joints in laminations and structural timber, and for large finger joints; Finger jointing adhesive (FJ) to be used for finger jointing of laminations and structural timber only; Gap filling adhesive (GF) to be used for fibre parallel gluing, e.g. glue lines between glulam components of blo
48、ck-glued glulam and for large finger joints. Gap filling adhesives can in addition be classified as application type GP usable for glue lines between laminations and for finger jointing of laminations and structural timber. Table 1 specifies the thirteen adhesive classes for which this European Stan
49、dard applies and their designations. The designations consist of: type: or ; application: GP, FJ or GF; maximum test temperature in degrees Celsius: 70 or 90 for type , or maximum use temperature in degrees Celsius: 50 for type ; use: M for mixed application, and S for separate application of adhesive and hardener. BS EN 301:2013EN 301:2013 (E) 8 Each application area and use shall be part of the designation. EXAMPLE EN 301 I 70 GP 0,6M and EN 301 I 70 FJ 0,1S if classified as general purpose adhesive for mixed application and
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