BS-EN-12390-6-2000.pdf
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1、BRITISH STANDARD BS EN 12390-6:2000 Incorporating Corrigendum No.1 Testing hardened concrete Part 6: Tensile splitting strength of test specimens The European Standard EN 12390-6:2000 has the status of a British Standard ICS 91.100.30 ? BS EN 12390-6:2000 This British Standard, having been prepared
2、under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Policy and Strategy Committee on 15 December 2000 BSI 17 November 2004 ISBN 0 580 36606 5 National foreword This British Standard is the official English language versio
3、n of EN 12390-6:2000, including Corrigendum September 2004. It will supersede BS 1881-117:1983, which will be withdrawn in 2003 when the full package of concrete standards is available. The UK participation in its preparation was entrusted to Technical Committee B/517, Concrete, to Subcommittee B/51
4、7/1, 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 international or European publications referred to in this document may
5、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 purport to include all the necessary provisions of a contract. Users ar
6、e 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 any enquiries on the interpretation, or proposals for change, and
7、 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 10, an inside back cover and a back cover. The BSI copyright notice dis
8、played in this document indicates when the document was last issued. Amendments issued since publication Amd. No.DateComments 15439 Incorporating Corrigendum No.1 17 November 2004 Amended foreword and changes to subclause 6.3 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12390-6 October 2000
9、ICS 91.100.30 Incorporating corrigendum September 2004 English version Testing hardened concrete - Part 6: Tensile splitting strength of test specimens Essai pour bton durci - Partie 6: Rsistance en traction par fendage dprouvettes Prfung von Festbeton - Teil 6: Spaltzugfestigkeit von Probekrpern Th
10、is 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 national standard without any alteration. Up-to-date lists and bibliographical refe
11、rences 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 any other language made by translation under the responsibility of a CEN member int
12、o 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, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spa
13、in, 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 rights of exploitation in any form and by any means reserved worldwide for CEN national
14、 Members. Ref. No. EN 12390-6:2000 E Page 2 EN 12390-6:2000 Contents Page Foreword.3 1 Scope .4 2 Normative references.4 3 Principle.4 4 Apparatus4 5 Test specimens.5 6 Procedures6 7 Expression of results.7 8 Test Report8 9 Precision8 Annex A (normative) Determination of tensile splitting strength u
15、sing cubic or prismatic specimens9 Figure 1 - Jig for testing cylindrical specimens.5 Figure 2 - Curved loading piece.7 Page 3 EN 12390-6:2000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 104, Concrete (performance, production, placing and compliance criteria), the
16、 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 April 2001, and conflicting national standards shall be withdrawn at the latest by December 2003. According to
17、 the CEN/CENELEC Internal Regulations, the national 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
18、, Sweden, Switzerland and the United Kingdom. This standard is one of a series concerned with testing concrete. It is based on the International Standard ISO 4108 Concrete Determination of tensile splitting strength of test specimens. It is recognized good practice to include measurement of density
19、prior to the determination of tensile splitting strength, as a check on compaction. This test method was one of a number examined in a Laboratory inter-comparison part-funded by the EC under Measurement and Testing programme, contract MAT1-CT94-0043. The programme and other references showed the fol
20、lowing: a) Tensile splitting strengths measured between the normal plane platens of testing machines, gave the same results as those using the special curved platens, originally described in ISO 4018. Although, therefore these curved platens have been optionally retained in this standard, they are n
21、ot necessary for the measurement. b) The material used for the packing strips affects the apparent tensile strength measured. This has led to the decision to standardize on hardboard strips, since they provided the lowest standard deviations. c) The apparent tensile strength measured depends upon th
22、e shape and size of the test specimen used: cubes gave higher measured tensile strengths than cylinders, by approximately 10 %; 150 mm cubes gave lower measured tensile strengths than 100 mm cubes; the effect of cylinder size on measured tensile strength was not found to be significant, possibly due
23、 to the variability of the data. As a result of these conclusions from the laboratory programme, this standard restricts the measurement of tensile splitting strength to cylindrical specimens used with hardboard packing strips, which is the reference method. However, as some countries still test cub
24、ical or prismatic specimens, their use has been retained in a normative annex. In cases of dispute, the reference method is the use of cylinders of 150 mm diameter and 300 mm length. A draft for this standard was published in 1996 for CEN enquiry as prEN 12362. It was one of a series of individually
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