EN 524-2:1997

Steel strip sheaths for prestressing tendons - Test methods - Part 2: Determination of flexural behaviour

This European Standard specifies the procedure for determining the flexural behaviour of sheaths for prestressing tendons which comply with prEN 523.

Hüllrohre aus Bandstahl für Spannglieder - Prüfverfahren - Teil 2: Bestimmung des Biegeverhaltens

Die vorliegende Europäische Norm legt das Verfahren zur Bestimmung des Biegeverhaltens von Hüllrohren für Spannglieder nach prEN 523   fest.

Gaines en feuillard d'acier pour câbles de précontrainte - Méthodes d'essai - Partie 2: Détermination du comportement à la flexion

La présente norme européenne définit la procédure de détermination du comportement à la flexion de gaines pour câbles de précontrainte conformes au prEN 523.

Zaščitne cevi za prednapete kable iz jeklenih trakov - Metode preskušanja - 2. del: Ugotavljanje obnašanja pri upogibu

General Information

• Status: Published
• Publication Date: 18-Mar-1997
• ICS: 77.140.75 - Steel pipes and tubes for specific use
• ICS: 91.080.40 - Concrete structures
• Technical Committee: CEN/TC 104 - Concrete ( performance, production, placing and compliance criteria )
• Drafting Committee: CEN/TC 104/WG 7 - Sheaths for prestressing tendons
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 18-Jun-2021
• Completion Date: 14-Apr-2025
• 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/115 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on reinforcing and prestress. steel for concrete
• Ref Project: SIST EN 524-2:1999 - Steel strip sheaths for prestressing tendons - Test methods - Part 2: Determination of flexural behaviour

Overview

EN 524-2:1997 (adopted as SIST EN 524-2:1999) is a CEN European Standard that specifies the procedure for determining the flexural behaviour of steel strip sheaths for prestressing tendons. The standard applies to sheaths manufactured to comply with prEN 523 and is intended for use in the design, testing and quality control of components used in prestressed concrete works. ICS classifications include 77.140.75 (steel pipes and tubes for specific use) and 91.080.40 (concrete structures).

Key Topics

The document focuses on test methods and requirements needed to assess how steel strip sheaths respond to bending loads. Key technical topics typically covered (in scope of the standard) include:

• Scope and applicability - defines the sheath types covered (steel strip sheaths) and the relationship to prEN 523.
• Specimen preparation - requirements for test samples representative of production sheaths.
• Test apparatus and setup - description of the bending/test arrangement required to produce repeatable flexural loading (equipment selection, supports and loading points).
• Test procedure - stepwise method to apply bending, control parameters and the sequence of operations to determine flexural behaviour.
• Measurement and assessment - how deflection, curvature or other relevant response parameters are recorded and interpreted.
• Reporting - required test records and the format for conveying results and conformity information.

(Note: specific test loads, dimensions and pass/fail criteria are set within the standard text and are not reproduced here.)

Applications

EN 524-2 is valuable for professionals involved in the manufacture, testing and specification of prestressing system components:

• Manufacturers - to validate product performance and ensure consistent sheath flexibility and mechanical behaviour.
• Independent testing laboratories - to perform standardized flexural tests for certification and quality control.
• Design engineers and specifiers - to select suitable sheaths whose flexural characteristics meet installation and structural requirements in prestressed concrete.
• Contractors and quality assurance teams - to verify on-site or incoming-material conformity with European test methods.

Using EN 524-2 helps reduce installation problems, ensures predictable tendon protection and supports compliance with contractual and regulatory requirements for prestressed concrete works.

Related Standards

• prEN 523 - the product specification standard to which the sheaths tested under EN 524-2 must conform.
• Other parts of the EN 524 series and national adoptions (e.g., SIST EN 524-2:1999) - cover complementary test methods and product requirements for prestressing sheaths.

Keywords: EN 524-2, steel strip sheaths, prestressing tendons, flexural behaviour, test methods, CEN, prEN 523, sheath bending test, prestressed concrete.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-1999
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8JRWDYOMDQMHREQDãDQMDSULXSRJLEX
Steel strip sheaths for prestressing tendons - Test methods - Part 2: Determination of
flexural behaviour
Hüllrohre aus Bandstahl für Spannglieder - Prüfverfahren - Teil 2: Bestimmung des
Biegeverhaltens
Gaines en feuillard d'acier pour câbles de précontrainte - Méthodes d'essai - Partie 2:
Détermination du comportement a la flexion
Ta slovenski standard je istoveten z: EN 524-2:1997
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne nam
...