SIST EN 480-14:2007

Admixtures for concrete, mortar and grout - Test methods - Part 14: Determination of the effect on corrosion susceptibility of reinforcing steel by potentiostatic electro-chemical test

This European Standard defines:
A test method for determining the influence of an admixture on the corrosion of a steel bar embedded in a mortar sample held at an increased potential in an electrochemical cell. The method can be used to determine the harmlessness of admixtures with regard to corrosion of reinforcing but not stressed steel. It applies to all admixtures for concrete, mortar and grout in contact with reinforcing steel.
NOTE 1   This test method does not apply to assessing corrosion behaviour of admixtures when used with high tensile steel.
NOTE 2   This test method does not assess the efficacy of admixtures defined as corrosion inhibitors.
NOTE 3   The quantity of chloride ion present in admixtures is covered by a separate requirement in the relevant parts of the EN 934 series.

Zusatzmittel für Beton, Mörtel und Einpressmörtel - Prüfverfahren - Teil 14: Bestimmung des Korrosionsverhaltens von Stahl in Beton - Elektrochemische Prüfung bei gleichbleibendem Potential

Diese Europäische Norm legt ein Prüfverfahren zur Bestimmung des Einflusses von Zusatzmitteln auf die Korrosion von einem in einer Mörtelprobe eingebetteten Rundstahlstab, der in einer elektrochemischen Zelle einem erhöhten Potenzial ausgesetzt ist, fest. Das Verfahren kann zur Bestimmung der Unschädlichkeit von Zusatzmitteln hinsichtlich der Korrosion von Betonstahl, jedoch nicht von Spannstahl, angewendet werden. Es gilt für alle Zusatzmittel für Beton, Mörtel und Einpressmörtel, die mit Betonstahl in Berührung kommen.
ANMERKUNG 1   Dieses Prüfverfahren gilt nicht für die Beurteilung des Korrosionsverhaltens von Zusatzmitteln, die in Verbindung mit  hochfestem Stahl verwendet werden.
ANMERKUNG 2   Dieses Prüfverfahren dient nicht dazu, die Wirksamkeit von Zusatzmitteln zu beurteilen, die als korrosionshemmende Stoffe (Passivatoren/Inhibitoren) bezeichnet werden.
ANMERKUNG 3   Die Festlegungen für die in Zusatzmitteln vorhandene Menge an Chloridionen wird durch gesonderte, in den jeweiligen Teilen der Normenreihe EN 934 angegebenen Anforderungen abgedeckt.

Adjuvants pour béton, mortier et coulis - Méthodes d'essais - Partie 14 : Détermination de l'effet sur la tendance a la corrosion de l'acier pour armature au moyen d'un essai électrochimique potentiostatique

La présente Norme européenne définit :
Une méthode d’essai permettant de déterminer l’effet d’un adjuvant sur la corrosion d’une barre en acier placée dans un échantillon de mortier maintenue a un potentiel élevé dans une cellule électrochimique. La méthode peut servir a déterminer l’innocuité des adjuvants vis-a-vis de la corrosion d’un acier pour armature non tendue. La méthode s’applique a tous les adjuvants pour bétons, mortiers et coulis en contact avec un acier pour armature en béton.
NOTE 1   Cette méthode d’essai ne s’applique pas a l’évaluation du comportement a la corrosion des adjuvants utilisés avec de l’acier a haute résistance.
NOTE 2   Cette méthode d’essai n’évalue pas l’efficacité des adjuvants définis comme inhibiteurs de corrosion.
NOTE 3   La teneur en ions de chlorure présente dans les adjuvants est traitée par une exigence distincte dans les parties correspondantes de la série EN 934.

Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja - 14. del: Merjenje občutljivosti armaturnega jekla v betonu na korozijo – Potenciostatična elektrokemijska metoda preskušanja

General Information

• Status: Published
• Publication Date: 28-Feb-2007
• Withdrawal Date: 28-Feb-2007
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: BBB - Concrete, reinforced concrete and prestressed concrete
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2007
• Due Date: 01-Mar-2007
• Completion Date: 01-Mar-2007
• Directive: 89/106/EEC - Construction products
• Mandate: M/BC/CEN/87/11 - Standardization request in the field of Construction products - concrete
• Ref Project: EN 480-14:2006 - Admixtures for concrete, mortar and grout - Test methods - Part 14: Determination of the effect on corrosion susceptibility of reinforcing steel by potentiostatic electro-chemical test

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 480-14:2007
01-marec-2007
.HPLMVNLGRGDWNL]DEHWRQPDOWRLQLQMHNFLMVNRPDVR0HWRGHSUHVNXãDQMD
GHO0HUMHQMHREþXWOMLYRVWLDUPDWXUQHJDMHNODYEHWRQXQDNRUR]LMR±
3RWHQFLRVWDWLþQDHOHNWURNHPLMVNDPHWRGDSUHVNXãDQMD
Admixtures for concrete, mortar and grout - Test methods - Part 14: Determination of the
effect on corrosion susceptibility of reinforcing steel by potentiostatic electro-chemical
test
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Prüfverfahren - Teil 14: Bestimmung
des Korrosionsverhaltens von Stahl in Beton - Elektrochemische Prüfung bei
gleichbleibendem Potential
Adjuvants pour béton, mortier et coulis - Méthodes d'essais - Partie 14 : Détermination
de l'effet sur la tendance a la corrosion de l'acier pour armature au moyen d'un essai
électrochimique potentiostatique
Ta slovenski standard je istoveten z: EN 480-14:2006
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
91.100.30 Beton in betonski izdelki Concrete and concrete
products
SIST EN 480-14:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 480-14
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2006
ICS 91.100.30

English Version
Admixtures for concrete, mortar and grout - Test methods - Part
14: Determination of the effect on corrosion susceptibility of
reinforcing steel by potentiostatic electro-chemical test
Adjuvants pour béton, mortier et coulis - Méthodes d'essai - Zusatzmittel für Beton, Mörtel und Einpressmörtel -
Partie 14 : Détermination de l'effet sur la tendance à la Prüfverfahren - Teil 14: Bestimmung des
corrosion de l'acier pour armature au moyen d'un essai Korrosionsverhaltens von Stahl in Beton -
électrochimique potentiostatique Elektrochemische Prüfung bei gleich bleibendem Potential
This European Standard was approved by CEN on 19 August 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 480-14:2006: E
worldwide for CEN national Members.

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EN 480-14:2006 (E)
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Test principle.4
4 Equipment, materials and test specimens.5
4.1 Equipment and materials .5
4.1.1 Electrodes.5
4.1.2 Reference mortar .5
4.1.3 Moulds .5
4.1.4 Test cell solution.5
4.1.5 Polarisation circuit.5
4.2 Preparation of test specimens .6
4.2.1 General.6
4.2.2 Preparation of the working electrode .6
4.2.3 Preparation of the mortar specimens.6
5 Testing .6
5.1 Preparation for testing .6
5.2 Test procedure.7
5.3 Test result.7
6 Test report .7
Bibliography .10

2

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EN 480-14:2006 (E)
Foreword
This document (EN 480-14:2006) has been prepared by Technical Committee CEN/TC 104 “Concrete and
related products”, 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 April 2007, and conflicting national standards shall be withdrawn at the
latest by April 2007.
This document has been prepared by Subcommittee 3 (SC 3) of TC 104 "Admixtures of concrete.”
This document is part of the series EN 480 "Admixtures for concrete, mortar and grout - Test methods" which
include the following:
Part 1: Reference concrete and reference mortar for testing
Part 2: Determination of setting time
Part 4: Determination of bleeding of concrete
Part 5: Determination of capillary absorption
Part 6: Infrared analysis
Part 8: Determination of the conventional dry material content
Part 10: Determination of water soluble chloride content
Part 11: Determination of air void characteristics in hardened concrete
Part 12: Determination of the alkali content of admixtures
Part 13: Reference masonry mortar for testing mortar admixtures
Part 14: Determination of the effect on corrosion susceptibility of reinforcing steel by potentiostatic electro-
chemical test
This document is applicable together with the standards of the series EN 934 "Admixtures for concrete, mortar
and grout.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, 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.
3

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EN 480-14:2006 (E)
1 Scope
This European Standard defines:
A test method for determining the influence of an admixture on the corrosion of a steel bar embedded in a
mortar sample held at an increased potential in an electrochemical cell. The method can be used to determine
the harmlessness of admixtures with regard to corrosion of reinforcing but not stressed steel. It applies to all
admixtures for concrete, mortar and grout in contact with reinforcing steel.
NOTE 1 This test method does not apply to assessing corrosion behaviour of admixtures when used with high tensile
steel.
NOTE 2 This test method does not assess the efficacy of admixtures defined as corrosion inhibitors.
NOTE 3 The quantity of chloride ion present in admixtures is covered by a separate requirement in the relevant parts of
the EN 934 series.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 196-1, Methods of testing cement – Part 1: Determination of strength
EN 197-1, Cement – Part 1: Composition, specifications and conformity criteria for common cements
3 Test principle
During the test, a steel bar, embedded in a cement mortar containing the admixture, is maintained at a
constant potential relative to a reference electrode. The potential chosen is close to the higher level of the
passive state for steel in plain concrete. Any detrimental effect from the addition of the admixture will be
immediately obvious as the passive s
...