prEN 10138-3

Prestressing steels - Part 3: Bars

This document specifies the requirements and definitions for the essential characteristics of prestressing bars, which are used for the prestressing of concrete and which are delivered as finished products in the form of:
-   hot rolled and processed bars;
-   plain and threaded bars.
NOTE 1   The specification of manufacturing processes related to the finished product is required to ensure that the essential characteristics can be tested properly and that test results are valid. It is not possible to anticipate that any other manufacturing process leads to products which can be tested properly with the specified test methods. Thus, a conclusion to the safe application in building construction would not any longer be possible for those products.
This document does not apply to:
-   galvanized steel;
-   epoxy coated steel;
-   reinforcing steel (see EN 10080);
-   further processing.
NOTE 2   Example for further processing: Plain bars are also applied in systems for the prestressing of concrete with threaded ends. The threaded ends depend in length and type on the intended use of the system and are manufactured downstream in the supply chain.

Spannstähle - Teil 3: Stäbe

Diese Europäische Norm legt allgemeine Anforderungen und Definitionen für die Leistungsmerkmale von Spannstäben fest, die für das Vorspannen von Betonbauwerken verwendet und als Fertigerzeugnis geliefert wird in Form von:
-   warmgewalzten und verarbeiteten Stäben;
-   glatten oder gerippten Stäben
ANMERKUNG 1   Die Spezifikation des Herstellungsverfahrens ist erforderlich, um sicherzustellen, dass die wesentlichen Merkmale ordnungsgemäß getestet werden können und dass die Prüfergebnisse gültig sind. Es ist nicht vorhersehbar, dass ein weiterer Herstellungsprozess zu Erzeugnissen führt, die mit den angegebenen Prüfmethoden ordnungsgemäß getestet werden können. Als Schlussfolgerung: eine sichere Anwendung wäre im Hochbau für diese Produkte nicht mehr möglich.
Diese Europäische Norm gilt nicht für
-   verzinkten Betonstahl;
-   epoxibeschichteten Betonstahl;
-   Betonstahl (siehe EN 10080);
-   Weiterverarbeitung.
ANMERKUNG 2   Beispiel für die Weiterverarbeitung: Glatte Stäbe sind auch als Gewindestäbe zum Vorspannen von Beton eingesetzt. Die Gewindelänge an den Stabenden hängt von dem Bautyp ab und wird nachträglich in der Lieferkette hergestellt.

Armatures de précontrainte en acier - Partie 3 : Barres

Le présent document spécifie les prescriptions et les définitions des caractéristiques essentielles des barres de précontrainte utilisées pour la précontrainte du béton et livrées en tant que produits finis sous forme de :
-   barres laminées à chaud et traitées ;
-   barres lisses et filetées.
NOTE 1   La spécification des procédés de fabrication relatifs au produit fini est requise pour assurer que les caractéristiques essentielles peuvent être soumises à essai correctement et que les résultats d’essais sont valides. Il n'est pas possible de prévoir qu'un autre procédé de fabrication conduise à des produits pouvant être soumis à essai correctement avec les méthodes d'essai spécifiées. Il ne serait donc plus possible de conclure à une application sûre dans la construction de bâtiments pour ces produits.
Le présent document ne s'applique pas à :
-   l'acier galvanisé ;
-   l'acier avec revêtement époxy ;
-   l'acier pour béton armé (voir EN 10080) ;
-   au traitement ultérieur.
NOTE 2   Exemple de traitement ultérieur : Les barres lisses sont également utilisées dans les systèmes de précontrainte du béton avec des extrémités filetées. Les extrémités filetées dépendent, pour leur longueur et leur type, de l'utilisation prévue du système et sont fabriquées en aval de la chaîne d'approvisionnement.

Prednapeta jekla - 3. del: Palice

General Information

• Status: Not Published
• Publication Date: 13-May-2024
• ICS: 77.140.15 - Steels for reinforcement of concrete
• Technical Committee: ECISS/TC 104 - Concrete reinforcing and prestressing steels
• Drafting Committee: CEN/TC 459/SC 4/WG 4 - Pre-stressing steels
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 10-Aug-2023
• Due Date: 21-Mar-2023
• Completion Date: 10-Aug-2023
• 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
• Mandate: M/115 REV - Revised mandate M/115 to CEN/CENELEC concerning the execution of standardisation work for harmonized standards on reinforcing and prestressing steel (for concrete)
• Ref Project: oSIST prEN 10138-3:2023 - Prestressing steels - Part 3: Bars

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2023
Prednapeta jekla - 3. del: Palice
Prestressing steels - Part 3: Bars
Spannstähle - Teil 3: Stäbe
Armatures de précontrainte en acier - Partie 3 : Barres
Ta slovenski standard je istoveten z: prEN 10138-3
ICS:
77.140.15 Jekla za armiranje betona Steels for reinforcement of
concrete
77.140.60 Jeklene palice in drogovi Steel bars and rods
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2023
ICS 77.140.15
English Version
Prestressing steels - Part 3: Bars
Armatures de précontrainte en acier - Partie 3 : Barres Spannstähle - Teil 3: Stäbe
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 4.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-CENELEC
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10138-3:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols . 8
5 Essential characteristics . 10
5.1 Tensile strength, tensile yield strength, stress ratio (ult. tensile strength/tens. yield
strength), modulus of elasticity and elongation at maximum load . 10
5.2 Relaxation . 10
5.3 Fatigue strength . 11
5.4 Durability . 11
5.5 Surface geometry . 11
5.5.1 Plain bar surface . 11
5.5.2 Thread bar surface for threads over the entire circumference . 11
5.5.3 Thread bar surface for threads over parts of the circumference (two rib rows) . 12
5.6 Section and tolerances . 13
5.6.1 Mass per meter and tolerances . 13
5.6.2 Length of bars . 14
5.6.3 Straightness . 14
6 Assessment and verification of constancy of performance . 17
6.1 General . 17
6.2 Product type testing . 17
6.2.1 General . 17
6.2.2 Test samples and testing . 18
6.2.3 Compliance criteria . 23
6.2.4 Re-testing . 24
6.2.5 Test report . 24
6.3 Factory production control (FPC) . 24
6.3.1 General . 24
6.3.2 Requirements . 24
6.4 Initial inspection of factory and of FPC . 32
6.5 Continuous surveillance of FPC . 32
6.5.1 General . 32
6.5.2 Audit testing of samples taken from the factory . 33
6.5.3 Procedure for modifications . 36
7 Test methods . 36
8 Delivery conditions . 36
8.1 General . 36
8.2 Packaging and handling . 36
8.3 Transport and storage . 37
8.4 Freedom from defects. 37
8.5 Welds . 37
Annex A (normative) Prestressing bars - Stress corrosion test in distilled water . 38
A.1 Scope . 38
A.2 Principle of the test . 38
A.3 Specimen . 38
A.4 Test device . 38
A.5 Test conditions . 39
A.6 Procedure . 40
A.7 Measurements . 40
A.8 Expression of results . 41
A.9 Test report . 41
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No.305/2011 . 42
Bibliography . 46
European foreword
This document (prEN 10138-3:2023) has been prepared by Technical Committee CEN/TC 459/SC4
“Concrete reinforcing and prestressing steels”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
1 Scope
This document specifies the requirements and definitions for the essential characteristics of prestressing
bars, which are used for the prestressing of concrete and which are delivered as finished products in the
form of:
— hot rolled and processed bars;
— plain and threaded bars.
NOTE 1 The specification of manufacturing processes related to the finished product is required to ensure that
the essential characteristics can be tested properly and that test results are valid. It is not possible to anticipate that
any other manufacturing process leads to products which can be tested properly with the specified test methods.
Thus, a conclusion to the safe application in building construction would not any longer be possible for those
products.
This document does not apply to:
— galvanized steel;
— epoxy coated steel;
— reinforcing steel (see EN 10080);
— further processing.
NOTE 2 Example for further processing: Plain bars are also applied in systems for the prestressing of concrete
with threaded ends. The threaded ends depend in length and type on the intended use of the system and are
manufactured downstream in the supply chain.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 10020:2000, Definition and classification of grades of steel
EN 10079:2007, Definition of steel products
EN ISO 15630-3:2019, Steel for the reinforcement and prestressing of concrete — Test methods — Part 3:
Prestressing steels (EN ISO 15630-3:2019, Corrected version 2019-10)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10020:2000 and
EN 10079:2007 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
prestressing steel
steel product with a circular or practically circular cross-section which is suitable for the prestressing of
concrete
3.2
hot rolled bar
product manufactured in straight lengths in a
...