SIST EN 391:2002
(Main)Glued laminated timber - Delamination test of glue lines
Glued laminated timber - Delamination test of glue lines
This standard specifies three delamination methods for continuous quality control of the glue line integrity of glued laminated timber.
Brettschichtholz - Delaminierungsprüfung von Klebstofffugen
Diese Norm legt drei Delaminierungsverfahren zur laufenden Überwachung der Klebstofffugengüte bei Brettschicht-holz fest.
Bois lamellé collé - Essai de délamination des joints de collage
La présente norme définit trois méthodes de délamination pour le contrôle continu de la qualité de l'intégrité du joint de collage du bois lamellé-collé.
Lepljeni lamelirani les - Delaminacijski preskus lepljenih stikov
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lepljeni lamelirani les - Delaminacijski preskus lepljenih stikovBrettschichtholz - Delaminierungsprüfung von KlebstofffugenBois lamellé collé - Essai de délamination des joints de collageGlued laminated timber - Delamination test of glue lines79.060.99Other wood-based panelsICS:Ta slovenski standard je istoveten z:EN 391:2001SIST EN 391:2002en01-julij-2002SIST EN 391:2002SLOVENSKI
STANDARDSIST EN 391:19961DGRPHãþD
SIST EN 391:2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 391October 2001ICS 79.060.99Supersedes EN 391:2001English versionGlued laminated timber - Delamination test of glue linesBois lamellé collé - Essai de délamination des joints decollageBrettschichtholz - Delaminierungsprüfung vonKlebstofffugenThis European Standard was approved by CEN on 3 September 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 391:2001 ESIST EN 391:2002
EN 391:2001 (E)2Contentspage1Scope.42Normative references.43Terms and definitions.44Symbols.45Requirements.46Delamination test of glue lines.56.1Principle.56.2Apparatus.56.2.1Pressure vessel.56.2.2Drying duct.56.2.3Balance.56.2.4Metal wedge and wooden hammer.56.3Preparation of test pieces.56.4Procedures.66.4.1General.66.4.2Measurement and evaluation of delamination.66.4.3Test cycle for method A.76.4.4Test cycle for method B.76.4.5Test cycle for method C.86.5Results.81.1.1General.86.5.2Total delamination.86.5.3Maximum delamination.86.6Test report.8SIST EN 391:2002
EN 391:2001 (E)3ForewordThis European Standard has been prepared by Technical Committee CEN/TC 124 "Timber structures", thesecretariat of which is held by DS.This European Standard supersedes EN 391:1995.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest byApril 2002.NOTE
It is considered desirable to maintain the same clause numbers consistently throughout this series of standards.Consequently, some clauses are void in this edition of this standard, but it is envisaged that future editions may need to includetext in the clauses.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.SIST EN 391:2002
EN 391:2001 (E)4IntroductionTwo delamination methods called A and B are suitable for adhesives of type I as defined in EN 301, and one methodcalled C is suitable for adhesives of type II as defined in EN 301.The two methods A and B have a duration of two days and a half day respectively, and method C requires four days.All are suitable for every day quality control.1 ScopeThis standard specifies three delamination methods for continuous quality control of the glue line integrity of gluedlaminated timber.2 Normative referencesNone.3 Terms and definitionsFor the purposes of this European Standard the following terms and definitions apply:3.1delamination lengthsum of the lengths of delaminated glue lines on both end-grain surfaces of each test piece3.2glued laminated timber (glulam)structural member formed by bonding together timber laminations with the grain essentially parallel4 Symbolsbwidth of cross section, in millimetres;hdepth of cross section, in millimetres;lmax,delammaximum delamination length of one glue line in the test piece, in millimetres;lgluelinelength of one glue line, normally the width b shown in Figure 1, in millimetres;ltot,delamdelamination length of all glue lines in the test piece, in millimetres;ltot,gluelineentire length of glue lines on the two end-grain surfaces of each test piece,in millimetres.5 RequirementsNone.SIST EN 391:2002
EN 391:2001 (E)56 Delamination test of glue lines6.1 PrincipleA gradient is introduced in the moisture content of the wood to build up internal stresses. This will result in tensilestresses perpendicular to the glue lines so that inadequate bonding quality will result in delamination of the glue lines.6.2 Apparatus6.2.1 Pressure vesselA pressure vessel designed to withstand safely a pressure of at least
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