EN 14889-1:2006
(Main)Fibres for concrete - Part 1: Steel fibres - Definitions, specifications and conformity
Fibres for concrete - Part 1: Steel fibres - Definitions, specifications and conformity
This Part 1 of EN 14889 specifies requirements for steel fibres for structural or non-structural use in concrete, mortar and grout.
NOTE Structural use of fibres is where the addition of fibres is designed to contribute to the load bearing capacity of a concrete element. This standard covers fibres intended for use in all types of concrete and mortar, including sprayed concrete, flooring, precast, in-situ and repair concretes.
Fasern für Beton - Teil 1: Stahlfasern - Begriffe, Festlegungen und Konformität
Fibres pour béton - Partie 1 : Fibres d'acier - Définitions, spécifications et conformité
La présente Partie 1 de l’EN 14889 spécifie les prescriptions relatives aux fibres d’acier pour une utilisation structurelle ou non structurelle dans le béton, le mortier ou le coulis.
NOTE L’utilisation des fibres est structurelle si l’ajout de fibres est conçu pour contribuer à la capacité portante d’un élément en béton. La présente norme traite des fibres destinées à être utilisées dans tous les types de béton et de mortier, y compris le béton projeté, le béton pour dallage, le béton pour préfabrication, le béton coulé en place et le béton de réparation.
Vlakna za beton – 1. del: Jeklena vlakna – Definicija, specifikacije in skladnost
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fibres for concrete - Part 1: Steel fibres - Definitions, specifications and conformityVlakna za beton – 1. del: Jeklena vlakna – Definicija, specifikacije in skladnostFibres pour béton - Partie 1 : Fibres d'acier - Définitions, spécifications et conformitéFasern für Beton - Teil 1: Stahlfasern - Begriffe, Festlegungen und KonformitätTa slovenski standard je istoveten z:EN 14889-1:2006SIST EN 14889-1:2006en91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:SLOVENSKI
STANDARDSIST EN 14889-1:200601-december-2006
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14889-1August 2006ICS 91.100.30 English VersionFibres for concrete - Part 1: Steel fibres - Definitions,specifications and conformityFibres pour béton - Partie 1 : Fibres d'acier - Définitions,spécifications et conformitéFasern für Beton - Teil 1: Stahlfasern - Begriffe,Festlegungen und KonformitätThis European Standard was approved by CEN on 26 June 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14889-1:2006: E
Tensile strength of fibres.8 5.4 Modulus of elasticity.8 5.5 Ductility of fibres.9 5.6 Mixing.9 5.7 Effect on consistence of concrete.9 5.8 Effect on strength of concrete.9 5.9 Release of dangerous substances.9 6 Evaluation of conformity.9 6.1 General.9 6.2 Initial type testing.10 6.3 Factory production control (FPC).11 Annex A (normative)
Conditions for switching between the control regimes T-N-R.15 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive for Construction Products (89/106/EEC).17 ZA.1 Scope and relevant characteristics.17 ZA.2. Procedure(s) for the attestation of conformity of products.19 ZA.3
CE Marking and labelling.22 Bibliography.26
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 February 2007, and conflicting national standards shall be withdrawn at the latest by May 2008. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the Construction Products Directive. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard should be given the status of a national standard.
No existing European Standard is superseded.
Not all fibre characteristics that may be relevant to the performance of a fibre concrete, structural or non-structural, such as early age effects, creep and chemical attack, have been addressed in this standard due to the difficulties of formulating meaningful and reproducible standardised test methods.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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 Part 1 of EN 14889 specifies requirements for steel fibres for structural or non-structural use in concrete, mortar and grout.
NOTE Structural use of fibres is where the addition of fibres is designed to contribute to the load bearing capacity of a concrete element.
This standard covers fibres intended for use in all types of concrete and mortar, including sprayed concrete, flooring, precast, in-situ and repair concretes. 2 Normative references The following referenced documents are indispensable for the application 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 10002-1, Metallic materials – Tensile testing – Part 1: Method of test at ambient temperature EN 10218-1, Steel wire and wire products - General – Part 1: Test methods EN 12350-3, Testing fresh concrete - Part 3: Vebe test prEN 14845-1, Test methods for fibres in concrete – Part 1: Reference concretes EN 14845-2, Test methods for fibres in concrete - Part 2: Effect on concrete 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 steel fibres straight or deformed pieces of cold-drawn steel wire, straight or deformed cut sheet fibres, melt extracted fibres, shaved cold drawn wire fibres and fibres milled from steel blocks which are suitable to be homogeneously mixed into concrete or mortar 3.2 length distance between the outer ends of the fibre 3.2.1 developed length (for deformed fibres with irregular cross section) length of the deformed fibres after straightening the fibre without deforming the cross section 3.3 equivalent diameter diameter of a circle with an area equal to the mean cross sectional area of the fibre. For circular fibres, the equivalent diameter is equal to the diameter of the fibres 3.4 aspect ratio ratio of length (l) to equivalent diameter of the fibre
or to δj where δj > δFL (j = 1,2,3,4) 3.8
crack mouth opening displacement (CMOD) linear displacement measured by a transducer installed on a prism subjected to a centre-point load F 3.9 elastic modulus
initial slope of the tensile stress versus tensile strain curve 3.10 declared value value for a product property, determined in accordance with this standard, that a manufacturer is confident of achieving within the given tolerances taking into account the variability of the manufacturing process 4 Symbols Symbols used in this part of this standard are defined as follows: A area of the cross section of the fibre, in mm2; d diameter or equivalent diameter of the fibre, in mm; Rm tensile strength of the fibre, in MPa; l length of the fibre, in mm; ld
developed length of the fibre in mm; m mass of the fibre in g;
= l / d and is the aspect ratio of the fibre;
density of steel in kg/m³. 5 Requirements 5.1 General The steel fibres shall conform to one of the groups or one of the shapes listed below:
Steel fibres shall be classified into one of the following groups, in accordance with the basic material used for the production of the fibres. Group I : cold-drawn wire Group II : cut sheet
Group Ill : melt extracted Group IV : shaved cold drawn wire Group V : milled from blocks
b) Shape Fibres shall be either straight or deformed.
The manufacturer shall declare the shape of the fibre. The control and tolerances on the shape shall be specified for each different shape separately, and may be performed using optical equipment. When applicable, the type of bundling shall be declared. When steel fibres are supplied with a coating (e.g. zinc coating), the type and characteristic quantity in g/m² shall be declared. The control of the quantity shall be a function of the type of coating and shall be declared by the manufacturer. 5.2 Dimensions and tolerances 5.2.1 General For fibres of group I and II, the length, equivalent diameter and aspect ratio shall be declared. The tolerances shall be as given in Table 1. Specimens of fibres, when sampled in accordance with 6.2.2 and measured in accordance with 5.2.2 and 5.2.3 shall not deviate from the declared value by more than the tolerances given in Table 1. At least 95 % of the individual specimens shall meet the specified tolerances in both cases. For fibres of group III, IV and V, the range of lengths, equivalent diameters and aspect ratio’s shall be declared. Specimens of fibres, when sampled in accordance with 6.2.2 and measured in accordance with 5.2.2 and 5.2.3 shall be within the specified range. At least 90 % of the individual specimen fibres shall meet the specified tolerances in both cases.
Table 1
— Tolerances on fibre length and diameter Property Symbol Deviation of the individual value relative to the declared value
Deviation of the average value relative to the declared value Length and developed length
>30 mm
≤ 30 mm
l , ld (if applicable) ± 10 %
± 5 %
± 1,5 mm (Equivalent) diameter
>0,30 mm
≤ 0,30 mm
d ± 10 %
± 5 %
± 0,015 mm Length/diameter ratio
± 15 % ± 7,5 %
5.2.2
Determination of length The length shall be measured with a marking gauge (callipers) with an accuracy of 0,1 mm.
In the case of an irregular cross section, the developed length of the fibre shall also be determined to calculate the equivalent diameter. If straightening of the fibre is necessary, it shall be done by hand or, if this is not possible, by hammering on a level of wood, plastic material or copper using a hammer of similar material. During the straightening the cross section should not be changed. 5.2.3 Determination of (equivalent) diameter 5.2.3.1 Round wire fibres The diameter of the fibre shall be measured with a micrometer, in two directions, approximately at right angles, to an accuracy of 0,01 mm. The fibre diameter shall be the mean of the two diameters.
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