SIST EN 12269-2:2004
(Main)Determination of the bond behaviour between reinforcing steel and autoclaved aerated concrete by the beam test - Part 2: Long term test
Determination of the bond behaviour between reinforcing steel and autoclaved aerated concrete by the beam test - Part 2: Long term test
Diese Europäische Norm legt ein Verfahren zur Bestimmung des Langzeit-Verbundverhaltens zwischen Bewehrungsstäben und dampfgehärtetem Porenbeton (AAC) in vorgefertigten bewehrten Bauteilen nach prEN 12602 fest. Das Prüfverfahren ist dafür gedacht, Werte der Langzeit-Verbundfestigkeit fb,l zu gewinnen, die in einer abschließenden Kurzzeitprüfung bestimmt werden. Die Prüfung wird für verschiedene Kombinationen von AAC-Art, Stabform und Korrosionsschutzsystemen durchgeführt.
Bestimmung des Verbundverhaltens zwischen Bewehrungsstahl und dampfgehärtetem Porenbeton mit Hilfe der Balkenprüfung - Teil 2: Langzeitprüfverfahren
Diese Europäische Norm legt ein Verfahren zur Bestimmung des Langzeit-Verbundverhaltens zwischen Bewehrungsstäben und dampfgehärtetem Porenbeton (AAC) in vorgefertigten bewehrten Bauteilen nach prEN 12602 fest. Das Prüfverfahren ist dafür gedacht, Werte der Langzeit-Verbundfestigkeit fb,l zu gewinnen, die in einer abschließenden Kurzzeitprüfung bestimmt werden. Die Prüfung wird für verschiedene Kombinationen von AAC-Art, Stabform und Korrosionsschutzsystemen durchgeführt.
Détermination du comportement d'adhérence entre les barres d'armatures et le béton cellulaire autoclavé par la méthode d'essai de poutre - Partie 2: Essai de longue durée
La présente Norme européenne spécifie une méthode pour déterminer le comportement de l'adhérence a long terme entre les barres d'armature et le béton cellulaire autoclavé (AAC) dans les éléments préfabriqués armés conformément au prEN 12602. La méthode d'essai est conçue pour obtenir les valeurs de la résistance d'adhérence a long terme, fb,l, qui sont obtenues lors d'un essai final de courte durée. L'essai est réalisé pour différentes combinaisons de types de béton cellulaire autoclavé (AAC), de forme de barres, et de systemes de protection contre la corrosion.
Določevanje sprijemnosti med armaturnim železom in avtoklaviranim celičastim betonom s »preskusom nosilca« - 2. del: Dolgotrajni preskus
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bestimmung des Verbundverhaltens zwischen Bewehrungsstahl und dampfgehärtetem Porenbeton mit Hilfe der Balkenprüfung - Teil 2: LangzeitprüfverfahrenDétermination du comportement d'adhérence entre les barres d'armatures et le béton cellulaire autoclavé par la méthode d'essai de poutre - Partie 2: Essai de longue duréeDetermination of the bond behaviour between reinforcing steel and autoclaved aerated concrete by the beam test - Part 2: Long term test91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:Ta slovenski standard je istoveten z:EN 12269-2:2003SIST EN 12269-2:2004en01-april-2004SIST EN 12269-2:2004SLOVENSKI
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SIST EN 12269-2:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12269-2December 2003ICS 91.080.40; 91.100.30English versionDetermination of the bond behaviour between reinforcing steeland autoclaved aerated concrete by the “beam test” - Part 2:Long term testDétermination du comportement de l'adhérence entre lesbarres d'armatures et le béton cellulaire autoclavé par laméthode d'essai de poutre - Partie 2: Essai de longueduréeBestimmung des Verbundverhaltens zwischenBewehrungsstahl und dampfgehärtetem Porenbeton mitHilfe der Balkenprüfung - Teil 2: LangzeitprüfverfahrenThis European Standard was approved by CEN on 1 September 2003.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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12269-2:2003 ESIST EN 12269-2:2004
EN 12269-2:2003 (E)2ContentsForeword.31Scope.32Normative references.33Principle.34Apparatus.45Test specimens.55.1Sample.55.2Shape and size of test specimens.55.3Number of test specimens.65.4Preparation of test specimens.65.5Conditioning of test specimens.76Testing procedure.76.1Long term loading.76.2Final short term test.77Test results.88Test report.8FiguresFigure 1 — Test specimen and loading arrangement.5Figure 2 — Sampling scheme for test specimens.6SIST EN 12269-2:2004
EN 12269-2:2003 (E)3ForewordThis document EN 12269-2:2003 has been prepared by Technical Committee CEN/TC 177 “Prefabricatedreinforced components of autoclaved aerated concrete or lightweight aggregate concrete with open structure”, thesecretariat of which is held by DIN.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 June 2004, and conflicting national standards shall be withdrawn at the latest byJune 2004.The European Standard EN 12269 consists of the following parts:- Part 1: Short term test;- Part 2: Long term test.In order to meet the performance requirements as laid down in the product standard for prefabricated componentsof autoclaved aerated concrete a number of standardized test methods are necessary.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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.1 ScopeThis European Standard specifies a method of determining the long term bond behaviour between reinforcing barsand autoclaved aerated concrete (AAC) in prefabricated reinforced components according to prEN 12602. The testmethod is conceived to obtain values for the long term bond strength fb,l which are obtained in a final short termtest. The test is performed for different combinations of AAC type, bar shape, and corrosion protection systems.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 678, Determination of dry density of autoclaved aerated concrete.EN 679, Determination of compressive strength of autoclaved aerated concrete.EN 12269-1:2000, Determination of the bond behaviour between reinforcing steel and autoclaved aerated concreteby the “beam test” – Part 1: Short term test.prEN 12602, Prefabricated reinforced components of autoclaved aerated concrete.3 PrincipleThe long term bond behaviour of reinforcing bars embedded in AAC is investigated in two steps as follows:SIST EN 12269-2:2004
EN 12269-2:2003 (E)41) Sustained loading of a prismatic test specimen (beam) by a constant transverse quarter point load for aperiod of 1 year at an elevated temperature of (50 ± 5) °C. The test specimen contains in longitudinaldirection one single reinforcing bar situated on the longitudinal median plane near the bottom surface (seeEN 12269-1).2) Final short term test according to EN 12269-1 on this test specimen in order to determine the long termbond strength fb,l obtained from final short term test.The long term bond strength fb,l is defined as the ultimate bond stress (residual bond strength) achieved at the finalshort term test.4 Apparatusa) a saw for cutting test specimens from reinforced components;b) a core drill with a diameter of the cutting edge of (200 to 300) mm, depending on the specimen height, forremoving the AAC in the tensile zone of the cross-section in the midspan area of the beam;c) a straight-edge and 0,1 mm feeler gauges for checking the planeness of surface areas where loads andsupport reactions are transmitted;d) a room capable of maintaining a temperature of (50 ± 5) °C and a relative humidity of(55 ± 5) %, for conditioning of test beams prior to the test and for the execution of the long term loading andthe final short term test;e) for the long term loading: a loading system with a capacity of at least 20 kN, allowing the application of aconstant quarter point transverse load (see Figure 1) on a test beam with a span of (600 to 1200) mm for aperiod of 1 year at a temperature of (50 ± 5) °C.The beam shall rest on two supporting rollers through steel distribution plates having a width of(50 ± 2) mm and a thickness of ³ 10 mm, extending over the full width of the beam. At least one of the rollers shallbe capable of being inclined in a plane perpendicular to the longitudinal axis of the beam.The supporting rollers shall be placed at a distance of 50 mm from the end surfaces of the beam.The load shall be applied equally to both beam parts, using a bridge profile resting on two rollers positionedperpendicularly to the longitudinal axis of the beam with a distance of 200 mm. Between the rollers and the uppersurface of the beam steel distribution plates with a width of (50 ± 2) mm and a thickness of ³ 10 mm, extendingover the full width of the beam, shall be inserted.Both the supporting rollers and the load-applying rollers shall be manufactured from steel and shall have a circularcross-section with a diameter between (15 to 40) mm. Their length shall be at least equal to the width of the beam.The axes of all rollers shall be parallel to each other. Each roll
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