EN 12269-2:2010
(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
This document specifies a method of determining the long term bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components according to EN 12602. The test method is conceived to obtain values for the long term bond strength fb,l which are obtained in a final short term test. The test is performed for different combinations of AAC type, bar shape, and corrosion protection systems.
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 in vorgefertigten bewehrten Bauteilen nach EN 12602 fest. Das Prüfverfahren ist dafür gedacht, Werte der Langzeitverbundfestigkeit fb,l zu gewinnen, die in einer abschließenden Kurzzeitprüfung bestimmt werden. Die Prüfung wird für verschiedene Kombinationen von Porenbetonart, Stabform und Korrosionsschutzsystem durchgeführt.
Détermination du comportement d'adhérence entre les barres d'armature et le béton cellulaire autoclavé selon la méthode d'essai de poutre - Partie 2 : Essai de longue durée
Le présent document spécifie une méthode de détermination du comportement d’adhérence à long terme
entre les barres d’armature et le béton cellulaire autoclavé (AAC) dans les éléments préfabriqués armés
conformes à l'EN 12602. La méthode d’essai est conçue pour obtenir les valeurs de la résistance d’adhérence
à long terme fb,l qui sont obtenues lors d’un essai de courte durée final. L’essai est réalisé pour différentes
combinaisons de types de AAC, de forme de barres et de systèmes de protection contre la corrosion.
Določevanje sprijemnosti med armaturnim železom in avtoklaviranim celičastim betonom s preskusom nosilca - 2. del: Dolgotrajni preskus
Ta dokument opredeljuje metodo določevanja dolgotrajne sprijemnosti med armaturnimi palicami in avtoklaviranim celičastim betonom (AAC) v gotovih armiranih elementih v skladu z EN 12602. Preskusna metoda je zasnovana za pridobivanje vrednosti dolgotrajne sprijemne moči v FB, ki so pridobljene v končnem kratkoročnem preskusu. Preskus se izvaja za različne kombinacije tipa AAC, oblike palice in sistemov za zaščito proti koroziji.
General Information
Relations
Overview
EN 12269-2:2010 is a European standard developed by CEN that specifies the methodology for determining the long term bond behaviour between reinforcing steel bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components. This standard forms Part 2 of the EN 12269 series and focuses specifically on long term tests using the beam test method. The standard supports the requirements outlined in EN 12602 regarding prefabricated AAC components. It evaluates the residual bond strength after cyclic loading to simulate real-world conditions, considering different AAC types, reinforcing bar shapes, and corrosion protection systems.
Key Topics
Scope and Purpose
The standard lays down a procedure to assess the long term bond strength (denoted as fb,l) between steel reinforcement and AAC. It incorporates a two-step testing method:- Cyclic loading of the beam specimen with varying loads to simulate long term stress.
- A final short term test to measure bond strength after loading.
Test Specimens
Test specimens are prisms cut from reinforced AAC components with dimensions precisely defined relative to the diameter of the reinforcing bars and the cover thickness. The specimens consist of single reinforcing bars placed centrally near the beam’s bottom surface. Preparation ensures minimal damage to the bond during cutting and precise surface leveling.Testing Apparatus
The test setup requires:- A cyclic loading machine with a minimum 20 kN capacity capable of applying sinusoidal four-point loads.
- A final short term loading system with approximately 30 kN capacity.
- Instrumentation to measure bar strain and slip, maintaining accuracy for precise data acquisition.
- Equipment for controlled conditioning temperatures (20 ± 5°C or 50 ± 5°C).
Testing Procedure
Cyclic loading is applied between specified minimum and maximum load limits to mimic long term stresses, defined by bond strength values and reduction coefficients to account for temperature and environmental effects. After cyclic loading, the final short term test per EN 12269-1 determines the residual bond strength. Dry density, moisture content, and compressive strength evaluations of AAC samples complement bond strength data.Terms and Definitions
Key terms such as "long term bond strength" and definitions of test specimen dimensions and parameters are standardized to ensure uniform understanding and application.
Applications
Prefabricated AAC Components
The standard is crucial for manufacturers of AAC prefabricated reinforced components to validate long term performance of embedded steel reinforcement. It helps ensure structural safety and durability.Quality Control and Product Certification
EN 12269-2:2010 provides testing protocols essential for quality control labs and certification bodies. It enables reliable measurement of residual bond strength, informing durability and product specification compliance.Design and Engineering
Structural engineers can apply the values generated with this standard to design more durable and resilient AAC constructions, factoring in long term bonding performance.Research and Development
Researchers can use the standardized method to evaluate new AAC mixes, reinforcement shapes, and corrosion protection types under long term loading conditions.
Related Standards
- EN 12269-1:2000 – Determination of the bond behaviour between reinforcing steel and AAC by the beam test: Short term test, forming Part 1 of the series focusing on initial bond performance.
- EN 12602 – Specification for prefabricated reinforced concrete components, providing the general framework for AAC products where this bond testing applies.
- EN 678 – Determination of the dry density of AAC.
- EN 679 – Determination of the compressive strength of AAC.
- EN 1353 – Determination of moisture content of AAC.
These interrelated standards collectively ensure comprehensive evaluation and quality management of reinforced AAC products.
By adhering to EN 12269-2:2010, stakeholders in the construction and precast industry can assure the safety, functionality, and longevity of AAC reinforced structures, promoting consistency across European construction markets. The specification balances rigorous testing accuracy with practical applicability, essential for modern infrastructure demands.
Frequently Asked Questions
EN 12269-2:2010 is a standard published by the European Committee for Standardization (CEN). Its full title is "Determination of the bond behaviour between reinforcing steel and autoclaved aerated concrete by the beam test - Part 2: Long term test". This standard covers: This document specifies a method of determining the long term bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components according to EN 12602. The test method is conceived to obtain values for the long term bond strength fb,l which are obtained in a final short term test. The test is performed for different combinations of AAC type, bar shape, and corrosion protection systems.
This document specifies a method of determining the long term bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components according to EN 12602. The test method is conceived to obtain values for the long term bond strength fb,l which are obtained in a final short term test. The test is performed for different combinations of AAC type, bar shape, and corrosion protection systems.
EN 12269-2:2010 is classified under the following ICS (International Classification for Standards) categories: 91.080.40 - Concrete structures; 91.100.30 - Concrete and concrete products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12269-2:2010 has the following relationships with other standards: It is inter standard links to EN 12269-2:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12269-2:2010 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 12269-2:2010 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
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'armature et le béton cellulaire autoclavé selon 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 12269-2:2010SIST EN 12269-2:2010en,fr,de01-julij-2010SIST EN 12269-2:2010SLOVENSKI
STANDARDSIST EN 12269-2:20041DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12269-2
March 2010 ICS 91.080.40; 91.100.30 Supersedes EN 12269-2:2003English Version
Determination of the bond behaviour between reinforcing steel and autoclaved aerated concrete by the beam test - Part 2: Long term test
Détermination du comportement d'adhérence entre les barres d'armature et le béton cellulaire autoclavé selon la méthode d'essai de poutre - Partie 2 : Essai de longue durée
Bestimmung des Verbundverhaltens zwischen Bewehrungsstahl und dampfgehärtetem Porenbeton mit Hilfe der Balkenprüfung - Teil 2: Langzeitprüfverfahren This European Standard was approved by CEN on 23 January 2010.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12269-2:2010: ESIST EN 12269-2:2010
The main changes with respect to EN 12269-2:2003 are listed below: a) the clause "Terms and definitions" has been added; b) the normative references have been updated; c) provisions on the conditioning of test specimens have been added; d) the clause on "Apparatus" has been adapted to take account of the latest findings; e) "long term loading" has been replaced by "cyclic loading" in the clause on "Testing procedure"; f) the requirements for the test report have been expanded. According to the CEN/CENELEC Internal Regulations, the national standards organizations 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 12269-2:2010
Core drill with a diameter of the cutting edge of (200 to 300) mm, depending on the specimen height (see 6.4), for removing the AAC in the tensile zone of the cross-section in the midspan area of the beam. 5.3
Straight-edge and 0,1 mm feeler gauges for checking the planeness of surface areas where loads and support reactions are transmitted. 5.4
Room capable of maintaining a temperature of (20 ±±±± 5) °C or (50 ±±±± 5) °C, for conditioning of test beams prior to the test and during the execution of the cyclic loading and the final short term test. 5.5
For the cyclic loading: cyclic loading machine with a capacity of at least 20 kN, allowing the application of an alternating transverse four point load (see Figure 1) on a test specimen with a span of 600 mm to 1 200 mm for a specified number of sinusoidal cycles at a constant frequency up to 5 Hz and alternating between load levels Fmin and Fmax.
The beam shall rest on two supporting rollers through steel distribution plates having a width of
(50 ± 2) mm and a thickness of ≥ 10 mm, extending over the full width of the beam. At least one of the rollers shall be 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 app
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