SIST EN 14488-4:2005+A1:2008
(Main)Testing sprayed concrete - Part 4: Bond strength of cores by direct tension
Testing sprayed concrete - Part 4: Bond strength of cores by direct tension
This European Standard describes a means of determining the tensile bond between sprayed concrete and substrate of concrete or rock tested in a laboratory as a direct tension test. Bond strength is defined as the capacity to transfer tension between two layers. Bond strength is calculated as the ultimate tensile force divided by the stressed cross-sectional area of a core, drilled out of a sprayed concrete layer together with a portion of the substrate concrete or rock.
Alternative in situ test methods for determining bond strength are allowed provided they meet all the requirements of this European Standard. In case of dispute, the method described in this European Standard is the reference test method.
Prüfung von Spritzbeton - Teil 4: Haftfestigkeit an Bohrkernen bei zentrischem Zug
Dieses Dokument beschreibt Möglichkeiten für die Bestimmung der Haftfestigkeit zwischen Spritzbeton und dem Untergrund aus Beton oder Gestein, die im Laboratorium in einem reinen Zugversuch bestimmt wird. Die Haftfestigkeit ist als die Fähigkeit definiert, Zugkräfte zwischen zwei Schichten zu übertragen. Die Verbundfestigkeit wird berechnet als Zugfestigkeit dividiert durch die beanspruchte Querschnittsfläche eines Bohrkernes, der zusammen mit einem Teil des Beton- oder Gesteinsuntergrundes aus einer Spritzbetonschicht ausgebohrt wird.
!Alternativ sind Prüfverfahren zur Bestimmung der Haftfestigkeit am Bauwerk zulässig, sofern sie alle Anforderungen dieser Europäischen Norm erfüllen. Im Streitfall gilt das in dieser Europäischen Norm beschriebene Verfahren als Referenzverfahren."
Essais pour béton projeté - Partie 4: Adhérence en traction directe sur carottes
La présente Norme européenne décrit une méthode permettant de déterminer l’adhérence en traction entre le béton
projeté et le support du béton ou la roche soumis à un essai de traction directe en laboratoire. L’adhérence se définit
comme étant la capacité à transférer la traction entre deux couches. L’adhérence est calculée comme étant l’effort
ultime de traction divisé par la section soumise à la contrainte d’une carotte prélevée dans une couche de béton
projeté ainsi que dans une portion du support du béton ou de roche.
!Les méthodes d’essai alternatives in situ permettant de déterminer l’adhérence sont autorisées à condition
qu’elles répondent aux exigences de la présente Norme européenne. En cas de litige, la méthode d’essai de
référence est la méthode décrite dans la présente Norme européenne
Preskušanje brizganega betona - 4. del: Sprijemna trdnost plasti z neposrednim nategom
General Information
- Status
- Published
- Publication Date
- 18-Jun-2008
- Technical Committee
- BBB - Concrete, reinforced concrete and prestressed concrete
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 28-Mar-2008
- Due Date
- 02-Jun-2008
- Completion Date
- 19-Jun-2008
- Directive
- Harmonized Standard305/2011 - 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
Not Harmonized89/106/EEC - Construction products
Relations
- Effective Date
- 01-Oct-2008
- Effective Date
- 01-Jul-2008
- Replaces
SIST EN 14488-4:2005 - Testing sprayed concrete - Part 4: Bond strength of cores by direct tension - Effective Date
- 01-Jul-2008
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
SIST EN 14487-1:2023 - Sprayed concrete - Part 1: Definitions, specifications and conformity - Effective Date
- 28-Jan-2026
- Referred By
SIST EN 14487-1:2006 - Sprayed concrete - Part 1: Definitions, specifications and conformity - Effective Date
- 28-Jan-2026
- Consolidates
SIST EN 14488-4:2005 - Testing sprayed concrete - Part 4: Bond strength of cores by direct tension - Effective Date
- 18-Jan-2023
- Effective Date
- 18-Jan-2023
Overview
SIST EN 14488-4:2005+A1:2008 is a European standard that specifies a laboratory method for testing the bond strength of sprayed concrete using cores subjected to direct tension. The bond strength is a crucial parameter in evaluating the capacity of sprayed concrete (shotcrete) to effectively transfer tensile stresses to the substrate, whether the substrate is concrete or rock. This standard outlines procedures for extracting cores from composite structures and determining the tensile bond at the interface, ensuring the reliability and safety of construction projects employing sprayed concrete techniques.
The document is key for civil engineering, shotcrete applications, quality assurance, and the maintenance and repair of concrete structures, offering a consistent, recognized reference for measuring and reporting bond strength.
Key Topics
Tensile Bond Strength Definition
The bond strength is defined as the ultimate tensile force transferred across the interface, divided by the stressed cross-sectional area of the core that includes both the sprayed concrete and substrate material.Direct Tension Core Testing
The test involves drilling a core through the sprayed layer and substrate, preparing the specimen, gluing steel dollies to both ends, and applying a controlled tensile load until failure.Classification of Failure Modes
Failures are categorized to distinguish between fractures occurring at the bond zone (true bond failure) and those occurring outside it (indicating bond strength exceeds measured tensile stress).Alternative Test Methods
The standard allows for alternative in-situ testing methods, provided they comply with its requirements. However, in case of dispute, the prescribed laboratory direct tension method serves as the reference.Reporting and Compliance
Detailed requirements are provided for documenting results, including failures, test conditions, deviations, and specimen identification, ensuring traceability and conformity with the standard.
Applications
Quality Control of Sprayed Concrete
Construction and infrastructure projects rely on robust bond strength between sprayed concrete and existing substrates for tunnels, retaining walls, and linings. This test ensures consistent performance and adherence to design specifications.Assessment of Repairs and Overlays
For repair work and structural overlays, verifying the bond between new sprayed concrete and old surfaces is critical to the long-term success and safety of remedial works.Rock Stabilization in Tunneling
The bond between shotcrete and rock in tunnel linings or mining applications is essential for structural integrity, making accurate bond strength testing vital.Dispute Resolution
In scenarios where different testing methods provide conflicting results, the laboratory direct tension test specified in this standard acts as the authoritative reference.Research and Development
Laboratories and manufacturers use this standard to develop and optimize sprayed concrete formulations, admixtures, and application techniques for improved performance.
Related Standards
EN 14488 Series
- Part 1: Sampling fresh and hardened concrete
- Part 2: Compressive strength of young sprayed concrete
- Part 3: Flexural strength of fibre-reinforced specimens
- Part 5: Energy absorption capacity
- Part 6: Thickness measurement
- Part 7: Fibre content determination
EN 10002-1
Metallic materials - Tensile testing - Method of test at ambient temperatureEN 12390-1
Testing hardened concrete - Shape, dimensions, and requirements for specimens and mouldsEN 12504-1
Testing concrete in structures - Cored specimens - Testing in compression
These references ensure a coherent approach to the assessment of sprayed concrete and support continuous improvement in construction quality and safety practices.
Relevant keywords: sprayed concrete testing, shotcrete bond strength, direct tension test, core sampling, concrete standard, laboratory testing, structural repair, tunnel lining, quality control, EN 14488-4.
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Frequently Asked Questions
SIST EN 14488-4:2005+A1:2008 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Testing sprayed concrete - Part 4: Bond strength of cores by direct tension". This standard covers: This European Standard describes a means of determining the tensile bond between sprayed concrete and substrate of concrete or rock tested in a laboratory as a direct tension test. Bond strength is defined as the capacity to transfer tension between two layers. Bond strength is calculated as the ultimate tensile force divided by the stressed cross-sectional area of a core, drilled out of a sprayed concrete layer together with a portion of the substrate concrete or rock. Alternative in situ test methods for determining bond strength are allowed provided they meet all the requirements of this European Standard. In case of dispute, the method described in this European Standard is the reference test method.
This European Standard describes a means of determining the tensile bond between sprayed concrete and substrate of concrete or rock tested in a laboratory as a direct tension test. Bond strength is defined as the capacity to transfer tension between two layers. Bond strength is calculated as the ultimate tensile force divided by the stressed cross-sectional area of a core, drilled out of a sprayed concrete layer together with a portion of the substrate concrete or rock. Alternative in situ test methods for determining bond strength are allowed provided they meet all the requirements of this European Standard. In case of dispute, the method described in this European Standard is the reference test method.
SIST EN 14488-4:2005+A1:2008 is classified under the following ICS (International Classification for Standards) categories: 91.100.30 - Concrete and concrete products. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 14488-4:2005+A1:2008 has the following relationships with other standards: It is inter standard links to SIST EN 13263-1:2005/kprA1:2008, SIST EN 14488-4:2005/oprA1:2007, SIST EN 14488-4:2005, SIST EN 12504-1:2019, SIST EN 12390-1:2021, SIST EN ISO 6892-1:2020, SIST EN 14490:2010, SIST EN 14487-1:2023, SIST EN 14487-1:2006, SIST EN 14488-4:2005, SIST EN 14488-4:2005/oprA1:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 14488-4:2005+A1:2008 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 14488-4:2005+A1:2008 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2008
1DGRPHãþD
SIST EN 14488-4:2005
Preskušanje brizganega betona - 4. del: Sprijemna trdnost plasti z neposrednim
nategom
Testing sprayed concrete - Part 4: Bond strength of cores by direct tension
Prüfung von Spritzbeton - Teil 4: Haftfestigkeit an Bohrkernen bei zentrischem Zug
Essais pour béton projeté - Partie 4: Adhérence en traction directe sur carottes
Ta slovenski standard je istoveten z: EN 14488-4:2005+A1:2008
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 14488-4:2005+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2008
ICS 91.100.30 Supersedes EN 14488-4:2005
English Version
Testing sprayed concrete - Part 4: Bond strength of cores by
direct tension
Essais pour béton projeté - Partie 4: Adhérence en traction Prüfung von Spritzbeton - Teil 4: Haftfestigkeit an
directe sur carottes Bohrkernen bei zentrischem Zug
This European Standard was approved by CEN on 17 April 2005 and includes Amendment 1 approved by CEN on 21 January 2008.
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 CEN 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 CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14488-4:2005+A1:2008: E
worldwide for CEN national Members.
Contents page
Foreword.3
1 Scope .4
2 Normative references .4
3 Principle.4
4 Apparatus .4
5 Test procedures.5
6 Results .6
7 Report .6
8 Precision.6
Foreword
This document (EN 14488-4:2005+A1:2008) 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 September 2008 and conflicting national standards shall be withdrawn
at the latest by September 2008.
This document includes Amendment 1, approved by CEN on 2008-01-21.
This document supersedes EN 14488-4:2005.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
This European Standard is part of a series concerned with testing sprayed concrete.
This series EN 14488 Testing sprayed concrete includes the following parts:
Part 1: Sampling fresh and hardened concrete
Part 2: Compressive strength of young sprayed concrete
Part 3: Flexural strengths (first peak, ultimate and residual) of fibre reinforced beam specimens
Part 4: Bond strength of cores by direct tension
Part 5: Determination of energy absorption capacity of fibre reinforced slab specimens
Part 6: Thickness of concrete on a substrate
Part 7: Fibre content of fibre reinforced concrete
!deleted text"
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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.
1 Scope
This European Standard describes a means of determining the tensile bond between sprayed concrete and
substrate of concrete or rock tested in a laboratory as a direct tension test. Bond strength is defined as the
capacity to transfer tension between two layers. Bond strength is calculated as the ultimate tensile force
divided by the stressed cross-sectional area of a core, drilled out of a sprayed concrete layer together with a
portion of the substrate concrete or rock.
!Alternative in situ
...