EN 524-6:1997

Steel strip sheaths for prestressing tendons - Test methods - Part 6: Determination of leaktightness (Determination of water loss)

This European Standard lays down the procedure for determining the leaktightness of sheaths for prestressing tendons which comply with prEN 523.

Hüllrohre aus Bandstahl für Spannglieder - Prüfverfahren - Teil 6: Bestimmung der Dichtheit (Bestimmung des Wasserverlustes)

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

Gaines en feuillard d'acier pour câbles de précontrainte - Méthodes d'essai - Partie 6: Détermination de l'étanchéité (Détermination des pertes en eau)

La présente norme européenne définit la procédure de détermination de l'étanchéité de gaines destinées à des câbles de précontrainte qui tombent dans le domaine de la norme prEN 523.

Zaščitne cevi za prednapete kable iz jeklenih trakov - Metode preskušanja - 6. del: Ugotavljanje tesnosti (Določevanje izgube vode)

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 524-6:1999 - Steel strip sheaths for prestressing tendons - Test methods - Part 6: Determination of leaktightness (Determination of water loss)

Overview

EN 524-6:1997 (CEN) specifies a laboratory procedure for determining the leaktightness of steel strip sheaths for prestressing tendons, using a water-loss measurement method. The part is devoted to assessing whether sheaths that comply with prEN 523 prevent water ingress or loss under controlled test conditions. This test method supports quality control and conformity assessment for components used in pre-stressed concrete and other tendon systems.

Key topics and requirements

• Scope: Applies to steel strip sheaths manufactured for prestressing tendons; intended to verify leaktightness by measuring water loss.
• Test principle: Leaktightness is judged by quantifying water loss from a sealed sheath assembly under defined laboratory conditions (the standard defines the test procedure and acceptance concept).
• Measurement focus: Water loss is used as the indicator of leaks or inadequate sealing in the sheath system.
• Documentation and reporting: Test results are recorded to support material acceptance, quality control and conformity with prEN 523.
• Applicable sectors: Relates to both product testing and construction materials verification for tendon protection in concrete structures.

(Note: EN 524-6 specifies the test procedure; specific numeric limits and procedural details are contained in the standard text and prEN 523.)

Applications

• Quality assurance for manufacturers of steel strip sheaths used in post-tensioning and pre-tensioning systems.
• Factory and independent testing laboratories conducting leaktightness and water-loss tests as part of product certification.
• Structural and geotechnical engineers, contractors, and specifiers who need to confirm sheath integrity for long-term durability and corrosion protection of prestressing tendons.
• Procurement and compliance teams verifying that supplied sheaths conform to European test methods before installation in concrete structures.

Who uses this standard

• Sheath and duct manufacturers
• Independent testing and certification bodies
• Pre-stressing specialists and structural engineers
• Construction contractors and quality inspectors
• Standards committees and regulatory authorities

Related standards

• prEN 523 (product requirements for sheaths for prestressing tendons)
• Other parts of the EN 524 series (test methods for sheaths)

Keywords for search optimization

EN 524-6, steel strip sheaths, prestressing tendons, leaktightness test, water loss determination, CEN test methods, tendon sheath testing, pre-stressed concrete, prEN 523, sheath quality control.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-1999
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8JRWDYOMDQMHWHVQRVWL'RORþHYDQMHL]JXEHYRGH
Steel strip sheaths for prestressing tendons - Test methods - Part 6: Determination of
leaktightness (Determination of water loss)
Hüllrohre aus Bandstahl für Spannglieder - Prüfverfahren - Teil 6: Bestimmung der
Dichtheit (Bestimmung des Wasserverlustes)
Gaines en feuillard d'acier pour câbles de précontrainte - Méthodes d'essai - Partie 6:
Détermination de l'étanchéité (Détermination des pertes en eau)
Ta slovenski sta
...