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
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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
...
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