DIN EN 14651-2007 Test method for metallic fibre concrete - Measuring the flexural tensile strength (limit or proportionality (LOP) residual) (includes Amendment A1 2007) English v.pdf
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1、December 2007DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.100.30!$K%6“140021
2、9www.din.deDDIN EN 14651SupersedesDIN EN 14651:2005-09www.beuth.deDocument comprises 19 pagesTest method for metallic fibre concrete Measuring the flexural tensile strength (limit of proportionality (LOP), residual) (includes Amendment A1:2007) English version of DIN EN 14651:2007-12 Prfverfahren fr
3、 Beton mit metallischen Fasern Bestimmung der Biegezugfestigkeit (Proportionalittsgrenze, residuelle Biegezugfestigkeit) (enthlt nderung A1:2007) Englische Fassung DIN EN 14651:2007-12 DIN EN 14651:2007-12 2 National foreword This standard has been prepared by Technical Committee CEN/TC 229 “Precast
4、 concrete products” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Technical Committee NA 005-07-08 AA Betonfertigteile (SpA CEN/TC 229). Amendments This standard differs fro
5、m DIN EN 14651:2005-09 as follows: a) Clause 10 “Test report” has been amended. Previous editions DIN EN 14651: 2005-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14651:2005+A1 September 2007 ICS 91.100.30 Supersedes EN 14651:2005 English Version Test method for metallic fibre concrete - M
6、easuring the flexural tensile strength (limit of proportionality (LOP), residual) Mthode dessai du bton de fibres mtalliques - Mesurage de la rsistance la traction par flexion (limite de proportionnalit (LOP), rsistance rsiduelle) Prfverfahren fr Beton mit metallischen Fasern - Bestimmung der Biegez
7、ugfestigkeit (Proportionalittsgrenze, residuelle Biegezugfestigkeit) This European Standard was approved by CEN on 3 April 2005 and includes Amendment 1 approved by CEN on 16 August 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
8、ing 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 ve
9、rsions (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, Belgi
10、um, 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
11、STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14651:2005+A1:2007: EEN 14651:2005+A1:2007 (E
12、) 2 Contents Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Symbols and abbreviated terms 5 4.1 Symbols 5 4.2 Abbreviations.5 5 Principle6 6 Apparatus .6 7 Test specimens7 7.1 Shape and size of test specimens .7 7.2 Manufacture and curing of test specimens 7 7.3 Notching o
13、f test specimens7 8 Testing procedure8 8.1 Preparation and positioning of test specimens .8 8.2 Bending test .10 9 Expression of results 11 9.1 Equivalence between CMOD and deflection.11 9.2 Limit of proportionality .12 9.3 Residual flexural tensile strength 13 10 Test report 14 11 Precision.15 Anne
14、x A (informative) Expressions for limit of proportionality and for residual flexural tensile strength.16 PageEN 14651:2005+A1:2007 (E) 3 Foreword This document (EN 14651:2005+A1:2007) has been prepared by Technical Committee CEN/TC 229 “Precast concrete products”, the secretariat of which is held by
15、 AFNOR. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2008 and conflicting national standards shall be withdrawn at the latest by March 2008. This document includes Amendment 1, approved by CEN on
16、2007-08-16. This document supersedes EN 14651:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This standard is one of a series concerned with testing metallic fibered concrete. According to the CEN/CENELEC Internal Regulations, the national
17、 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, Pola
18、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14651:2005+A1:2007 (E) 4 1 Scope This European Standard specifies a method of measuring the flexural tensile strength of metallic fibered concrete on moulded test specimen. The method provides for the determ
19、ination of the limit of proportionality (LOP) and of a set of residual flexural tensile strength values. This testing method is intended for metallic fibres no longer than 60 mm. The method can also be used for a combination of metallic fibres and, a combination of metallic fibres with other fibres.
20、 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 12350-1, Testing fresh
21、 concrete Part 1: Sampling. EN 12390-1, Testing hardened concrete Part 1: Shape, dimensions and other requirements for specimens and moulds. EN 12390-2, Testing hardened concrete Part 2: Making and curing specimens for strength tests. EN 12390-4, Testing hardened concrete Part 4: Compressive strengt
22、h Specification for testing machines. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 crack mouth opening displacement linear displacement measured by a transducer installed as specified in 7.1 and illustrated in Figure 4, on a prism subjecte
23、d to a centre-point load F 3.2 deflection linear displacement measured by a transducer installed as specified in 7.1 and illustrated in Figure 5, on a prism subjected to a centre-point load F 3.3 limit of proportionality stress at the tip of the notch which is assumed to act in an uncracked mid-span
24、 section, with linear stress distribution, of a prism subjected to the centre-point load FLdefined in 8.2 3.4 residual flexural tensile strength fictitious stress at the tip of the notch which is assumed to act in an uncracked mid-span section, with linear stress distribution, of a prism subjected t
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