BS EN 12390-5-2000 Testing hardened concrete. Flexural strength of test specimens.pdf
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1、BRITISH STANDARD BS EN 12390-5:2000 Incorporating Corrigendum No. 1 Testing hardened concrete Part 5: Flexural strength of test specimens The European Standard EN 12390-5:2000 has the status of a British Standard ICS 91.100.30 ? Licensed copy:PONTYPRIDD COLLEGE, 05/06/2007, Uncontrolled Copy, BSI BS
2、 EN 12390-5:2000 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 December 2000 BSI 2 November 2004 ISBN 0 580 36605 7 National foreword
3、 This British Standard is the official English language version of EN 12390-5:2000, including Corrigendum September 2004. It will supersede BS 1881-118:1983, which will be withdrawn in 2003 when the full package of concrete standards is available. The UK participation in its preparation was entruste
4、d by Technical Committee B/517, Concrete, to Subcommittee B/517/1, Concrete production and testing, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement internatio
5、nal or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “ International Standards Correspondence Index” , or by using the “ Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purpor
6、t to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee
7、any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an
8、inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 15438 Corrigendum No. 1 2 November 2004Correction to Subclause 6.2 Licensed copy:PONTYPRIDD COLLEGE, 05/06/20
9、07, Uncontrolled Copy, BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12390-5 October 2000 ICS 91.100.30 Incorporating corrigendum September 2004 English version Testing hardened concrete - Part 5: Flexural strength of test specimens Essai pour bton durci - Partie 5: Rsistance la flexion s
10、ur prouvettes Prfung von Festbeton - Teil 5: Biegezugfestigkeit von Probekrpern This European Standard was approved by CEN on 18 February 2000. 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 n
11、ational standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in a
12、ny other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, German
13、y, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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 2000 CEN All right
14、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12390-5:2000 E Licensed copy:PONTYPRIDD COLLEGE, 05/06/2007, Uncontrolled Copy, BSI Page 2 EN 12390-5:2000 B SI 0002-21 Contents Page Foreword.3 1 Scope3 2 Normative references4 3 Principle4 4 App
15、aratus.4 5 Test specimens4 6 Procedures.5 7 Expression of results6 8 Test report6 9 Precision.7 Annex A (normative) Loading by a centre-point load8 Figure 1 Arrangement of loading of test specimen (two-point loading)7 Figure 2 Arrangement of loading of test specimen (centre-point loading).7 Licensed
16、 copy:PONTYPRIDD COLLEGE, 05/06/2007, Uncontrolled Copy, BSI ? Page 3 EN 12390-5:2000 B SI 0002-21 Foreword This European Standard has been prepared by Technical Committee CEN/TC 104, Concrete (performance, production, placing and compliance criteria), the Secretariat of which is held by DIN. This E
17、uropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2001, and conflicting national standards shall be withdrawn at the latest by December 2003. According to the CEN/CENELEC Internal Regulations, the n
18、ational standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom
19、. This standard is one of a series concerned with testing concrete. It is based on the International Standard ISO 4013 - Concrete - Determination of flexural strength of test specimens. It is recognized good practice to include measurement of density prior to the determination of flexural strength,
20、as a check on compaction of the concrete. The two-point method of loading has been taken as the reference method, but the use of centre-point loading has been included as a normative annex. An inter-comparison of the two-point and the centre-point methods has been made as part of a test programme, p
21、art-funded by the EC under the Measurement and Testing Programme, contract MAT I-CT-94-CO43. The centre-point method gave results which were consistently 13 % higher than those from the two-point method. A draft for this standard was published in 1996 for CEN enquiry as prEN 12359. It was one of a s
22、eries of individually numbered test methods for fresh or hardened concrete. For convenience it has now been decided to combine these separate draft standards into three new standards with separate parts for each method, as follows: - Testing fresh concrete (EN 12350) - Testing hardened concrete (EN
23、12390) - Testing concrete in structures (EN 12504) The series prEN 12390 includes the following parts where the brackets give the numbers under which particular test methods were published for CEN enquiry: EN 12390 - Testing hardened concrete - Part 1: Shape, dimensions and other requirements of spe
24、cimens and moulds (former prEN 12356:1996) Part 2: Making and curing specimens for strength tests (former prEN 12379:1996) Part 3: Compressive strength of test specimens (former prEN 12394:1996) Part 4: Compressive strength - Specification for testing machines (former prEN 12390:1996) Part 5: Flexur
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