EN 990:2002

Test methods for verification of corrosion protection of reinforcement in autoclaved aerated concrete and lightweight aggregate concrete with open structure

This European Standard specifies methods for verification of the effectiveness of the corrosion protection of reinforcing steel embedded in autoclaved aerated concrete (AAC) components according to prEN 12602 or components of lightweight aggregate concrete with open structure (LAC) according to prEN 1520.

Prüfverfahren zur Überprüfung des Korrosionsschutzes der Bewehrung in dampfgehärtetem Porenbeton und in haufwerksporigem Leichtbeton

Diese Europäische Norm enthält Festlegungen für Vspezifiziert die Prüfverfahren zur zum Überprüfung Nachweis der Wirksamkeit des Korrosionsschutzes von Bewehrungsstahl, der in Bauteilen aus dampfgehärtetem Porenbeton (AAC) nach prEN 12602 oder in Bauteilen aus haufwerksporigem Leichtbeton (LAC) nach EN 1520 eingebettet ist.
Für Bauteile aus haufwerksporigem Leichtbeton sind Prüfungen nach dieser Norm nicht erforderlich, wenn der
Korrosionsschutz durch vollständiges Einbettung Einbetten der Bewehrungsstäbe in einer Zone aus Beton mit geschlossenem Gefüge nach 5.8.3.3 von prEN 1520EN 1520:2002, 5.8.3.3, sichergestellt istbewirkt wird.
Es sind drei verschiedene Verfahren von für Kurzzeitprüfungen (Verfahren 1 bis 3) vorgesehen.
Die Prüfverfahren dürfen können zur Prüfung Untersuchung der grundsätzlichen Eignung eines bestimmten Korrosionsschutzsystems in Verbindung mit einem definierten bestimmten Fertigungsverfahren zur Herstellung von bewehrten Bauteilen
eingesetzt werden. Sie dürfen können auch zur laufenden Güteüberwachung Produktionskontrolle herangezogen werden.
ANMERKUNG   Die Festlegung von drei verschiedenen Kurzzeitprüfungen Kurzzeitprüfverfahren hat historische Gründe und basiert weniger auf technischen Erfordernissen als vielmehr auf bewährten etablierten Verfahren.

Méthodes d'essai pour la vérification de la protection contre la corrosion des armatures dans le béton cellulaire autoclavé et le béton de granulats légers à structure ouverte

Cette norme européenne indique les méthodes d'essais pour vérifier l'efficacité de la protection contre la corrosion de l'acier d'armature disposé dans les composants en béton cellulaire autoclavé (AAC) conformément au prEN 12602 ou dans les produits en béton de granulats légers à structure ouverte (LAC) conformément au prEN 1520.
Des essais effectués suivant cette norme européenne ne sont pas exigés pour les composants LAC si la protection contre la corrosion est assurée par un enrobage intégral des barres d'armature dans une zone de béton à structure fermée conformément au prEN 1520:2001, 5.8.3.3.
Trois méthodes différentes d'essai de courte durée sont fournies (méthodes 1 à 3).
Les méthodes d'essai peuvent être utilisées pour examiner l'adéquation fondamentale d'un système de protection contre la corrosion en combinaison avec un procédé de fabrication bien défini pour la production de composants armés. Elles peuvent également être utilisées pour le contrôle courant de la production.
NOTE   La spécification de trois méthodes différentes d'essai de courte durée est basée sur des raisons historiques et des modes opératoires établis plutôt que sur des besoins techniques.

Preskusne metode za preverjanje korozijske zaščite armature v avtoklaviranem celičastem betonu in betonu iz lahkega agregata z odprto strukturo

General Information

• Status: Published
• Publication Date: 17-Sep-2002
• Withdrawal Date: 30-Mar-2003
• ICS: 97.100.30 - Solid fuel heaters
• Technical Committee: CEN/TC 177 - Prefabricated reinforced components of autoclaved aerated concrete or light-weight aggregate concret
• Drafting Committee: CEN/TC 177/WG 3 - Test methods
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 05-Sep-2022
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/100 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on precast concrete products
• Ref Project: SIST EN 990:2003 - Test methods for verification of corrosion protection of reinforcement in autoclaved aerated concrete and lightweight aggregate concrete with open structure

Relations

• Replaces: EN 990:1995 - Test methods for verification of corrosion protection of reinforcement in autoclaved aerated concrete and lightweight aggregate concrete with open structure
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2003
1DGRPHãþD
SIST EN 990:2001
3UHVNXVQHPHWRGH]DSUHYHUMDQMHNRUR]LMVNH]DãþLWHDUPDWXUHYDYWRNODYLUDQHP
FHOLþDVWHPEHWRQXLQEHWRQXL]ODKNHJDDJUHJDWD]RGSUWRVWUXNWXUR
Test methods for verification of corrosion protection of reinforcement in autoclaved
aerated concrete and lightweight aggregate concrete with open structure
Prüfverfahren zur Überprüfung des Korrosionsschutzes der Bewehrung in
dampfgehärtetem Porenbeton und in haufwerksporigem Leichtbeton
Méthodes d'essai pour la vérification de la protection contre la corrosion des armatures
dans le béton cellulaire autoclavé et le béton de granulats légers a structure ouverte
Ta slovenski standard je istoveten z: EN 990:2002
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 990
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2002
ICS 91.100.30 Supersedes EN 990:1995
English version
Test methods for verification of corrosion protection of
reinforcement in autoclaved aerated concrete and lightweight
aggregate concrete with open structure
Méthodes d'essai pour la vérification de la protection contre Prüfverfahren zur Überprüfung des Korrosionsschutzes der
la corrosion des armatures dans le béton cellulaire Bewehrung in dampfgehärtetem Porenbeton und in
autoclavé et le béton de granulats légers à structure haufwerksporigem Leichtbeton
ouverte
This European Standard was approved by CEN on 21 July 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 990:2002 E
worldwide for CEN national Members.

Contents
page
Foreword.3
1 Scope .3
2 Normative references .3
3 Principle.4
4 Apparatus .4
5 Test specimens .4
5.1 General.4
5.2 Sealing of the end faces and conditioning of the test specimens.5
6 Corrosion tests.5
6.1 Short-term test with alternate wetting with sodium chloride solution and drying in air (method
1) .5
6.1.1 Exposure cycles.5
6.1.2 Examination of steel surface and evaluation of results .6
6.2 Short-term test with alternate wetting with water and drying in warm air (method 2) .6
6.2.1 Exposure cycles.6
6.2.2 Examination of the steel surface and evaluation of results .6
6.3 Short-term test with alternating temperature (method 3) .6
6.3.1 Exposure cycles.6
6.3.2 Examination of the steel surface and evaluation of results .6
7 Test report .7
Foreword
This document (EN 990:2002) has been prepared by Technical Committee CEN /TC 177 "Prefabricated reinforced
components of autoclaved aerated concrete or light-weight aggregate concrete with open structure", the secretariat
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 or
by endorsement, at the latest by March 2003, and conflicting national standards shall be withdrawn at the latest by
March 2003.
This document supersedes EN 990:1995.
In order to meet the performance requirements as laid down in the product standards for prefabricated reinforced
components of autoclaved aerated concrete or for prefabricated reinforced components of lightweight aggregate
concrete with open structure a number of standardised test methods are necessary.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
1 Scope
This European Standard specifies the test methods for verification of the effectiveness of the corrosion protection of
reinforcing steel embedded in components of autoclaved aerated concrete (AAC) according to prEN 12602 or in
components of lightweight aggregate concrete with open structure (LAC) according to prEN 1520.
Tests according to this European Standard are not required for LAC-components if corrosion protection is achieved
by embedding the reinforcing bars completely in a zone of concrete with closed structure according to prEN
1520:2002, 5.8.3.3.
Three different methods of short-term tests (methods 1 to 3) are provided.
The test methods can be used to examine the fundamental suitability of a corrosion protective system in combination
with a defined manufacturing process for the production of reinforced components. They can also be used for current
production control.
NOTE The specification of three different short-term test methods is based on historical reasons and established procedures
rather than on technical needs.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
prEN 1520:2002, Prefabricated reinforced components of lightweight aggregate concrete with open structure.
prEN 12602, Prefabricated reinforced components of autoclaved aerated concrete.
3 Principle
Test specimens consisting of autoclaved aerated concrete (AAC) or lightweight aggregate concrete with open
structure (LAC) with embedded reinforcing bars are cut from prefabricated reinforced components or manufactured
separately. The test specimens are exposed to a defined corrosive environment for a specified series of exposure
cycles. Immediately after the end of the corrosive exposure the concrete and the protective coating are removed
from the embedded bars. The steel surface is examined visually for corrosion and the area of the corroded surface
is determined and compared with the limits according to the relevant product standard prEN 1520 or prEN 12602.
4 Apparatus
a) Saw
A saw for cutting test specimens from reinforced components without excessive heating or vibrations.
b) Equipment for short-term test with alternate wetting wit
...