BS EN 14845-1-2007 Test methods for fibres in concrete. Reference concretes.pdf
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1、BRITISH STANDARD BS EN 14845-1:2007 Test methods for fibres in concrete Part 1: Reference concretes The European Standard EN 14845-1:2007 has the status of a British Standard ICS 91.100.30 ? Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, BSI BS EN 14845-1:2007 This British Standard
2、 was published under the authority of the Standards Policy and Strategy Committee on 28 September 2007 BSI 2007 ISBN 978 0 580 53903 9 National foreword This British Standard is the UK implementation of EN 14845-1:2007. The UK participation in its preparation was entrusted by Technical Committee B/5
3、17, Concrete, to Subcommittee B/517/11, Fibres for concrete. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.
4、Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14845-1 July 2007 ICS 91.100.30 Englis
5、h Version Test methods for fibres in concrete - Part 1: Reference concretes Mthodes dessai des fibres dans le bton - Partie 1: Btons de rfrence Prfverfahren fr Fasern in Beton - Teil 1: Referenzbetone This European Standard was approved by CEN on 9 June 2007. CEN members are bound to comply with the
6、 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
7、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 v
8、ersions. 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
9、, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN nati
10、onal Members. Ref. No. EN 14845-1:2007: E Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, BSI EN 14845-1:2007 (E) 2 Contents Page Foreword3 1Scope 4 2Normative references4 3Principle4 4Equipment 5 4.1General5 4.2Concrete mixer.5 4.3Moulds 5 4.4High frequency vibrating table.5 5Mater
11、ials .5 5.1Aggregates .5 5.2Mixing water.5 5.3Cement5 5.4Admixtures .5 5.5Fibres 5 6Reference concrete composition and properties.6 6.1General6 6.2Water/cement ratio.6 6.3Maximum cement content.6 6.4Fibre content7 6.5Consistence7 6.6Specimen preparation.7 6.7Concrete curing and storage7 7Report .8 B
12、ibliography9 Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, BSI ? EN 14845-1:2007 (E) 3 Foreword This document (EN 14845-1:2007) has been prepared by Technical Committee CEN/TC 104 “ Concrete and related products” , the secretariat of which is held by DIN. This European Standard sh
13、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. It has been drafted by Working Group 11 “ Fibres for concrete” , the secretari
14、at of which is held by BSI. This European Standard is one of a series dealing with test methods for assessing the performance of fibres, either steel or polymer, in concrete. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound
15、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, Swit
16、zerland and United Kingdom. Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, BSI ? EN 14845-1:2007 (E) 4 1 Scope This European Standard specifies the composition and characteristics of reference concretes used to evaluate the performance of fibres in concrete. The purpose of the refe
17、rence concrete is to determine the general suitability of a fibre for use in concrete. NOTE The end user needs to satisfy themselves about the effectiveness of the fibre in their own concrete. 2 Normative references The following referenced documents are indispensable for the application of this doc
18、ument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 197-1:2000, Cement Part 1: Composition, specifications and conformity criteria for common cements EN 206-1:2000, Concrete Part 1:
19、Specification, performance, production and conformity EN 933-2, Tests for geometrical properties of aggregates Part 2: Determination of particle size distribution Test sieves, nominal size of apertures EN 1008, Mixing water for concrete Specification for sampling, testing and assessing the suitabili
20、ty of water, including water recovered from processes in the concrete industry, as mixing water for concrete EN 1766:2000, Products and systems for the protection and repair of concrete structures Test methods Reference concretes for testing EN 12350-1, Testing fresh concrete Part 1: Sampling EN 123
21、50-3, Testing fresh concrete Part 3: Vebe test EN 12350-4, Testing fresh concrete Part 4: Degree of compactability EN 14651, Test method for metallic fibrered concrete Measuring the flexural tensile strength (limit of proportionality (LOP), residual) EN 14845-2, Test methods for fibres in concrete P
22、art 2: Effect on strength of concrete EN 14889-1:2006, Fibres for concrete Part 1: Steel fibres Definitions, specifications and conformity EN 14889-2:2006, Fibres for concrete Part 2: Polymer fibres Definitions, specifications and conformity 3 Principle This European Standard prescribes the constitu
23、ents and proportions for plain reference concretes to be used to evaluate the performance of fibres in concrete under standard laboratory conditions. It has been developed from EN 1766 and should be read in conjunction with that standard. The reference concretes shall be designed to meet a prescribe
24、d flexural tensile strength, as defined in Table 1. The performance of a fibre shall be determined in a mandatory 16 mm or 20 mm maximum aggregate size mix using the test method described in EN 14845-2 for the effect on strength of concrete, and by one of the Licensed copy:PONTYPRIDD COLLEGE, 05/01/
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