1、BRITISH STANDARD BS EN 450-2:2005 Fly ash for concrete Part 2: Conformity evaluation The European Standard EN 450-2:2005 has the status of a British Standard ICS 91.100.30 BS EN 450-2:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 May
2、 2005 BSI 5 May 2005 ISBN 0 580 45505 X National foreword This British Standard is the official English language version of EN 450-2:2005. Together with BS EN 450-1:2004, this document supersedes BS EN 450:1995. The UK participation in its preparation was entrusted by Technical Committee B/516, Ceme
3、nt and lime, to Subcommittee B/516/101, Additions for concrete, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Additional information The term “fly ash” used in this standard covers pulverized-fuel ash (PFA) whic
4、h is the more precise term for fly ashes produced from electricity generating power stations burning pulverized hard coals and which has been in common use in the UK for many years. This British Standard specifies the scheme for the evaluation of conformity of fly ash as an addition in concrete, inc
5、luding certification of conformity. In doing so it complements BS EN 450-1:2005, which, when implemented in the UK, will make appropriate reference to this British Standard. Cross-references The British Standards which implement international or European publications referred to in this document may
6、 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 a
7、re 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, an
8、d 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 24, an inside back cover and a back cover. The BSI copyright notice di
9、splayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 450-2 February 2005 ICS 91.100.30 Supersedes EN 450:1994 English version Fly ash for concrete - Part 2: Conformity eva
10、luation Cendre volant pour beton - Partie 2: Evaluation de la conformit Flugasche fr Beton - Teil 2: Konformittsbewertung This European Standard was approved by CEN on 22 December 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
11、g 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 Central Secretariat or to any CEN member. This European Standard exists in three official versio
12、ns (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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cy
13、prus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUR
14、OPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 450-2:2005: EEN 450-2:2005 (E) 2 Contents Page Foreword4 1 Scope 5 2 N
15、ormative references 5 3 Terms and definitions .5 3.1 Specific definitions5 3.2 General definitions 6 4 Tasks for the producer7 4.1 Factory production control.7 4.2 Internal quality control 8 4.3 Autocontrol testing of samples10 5 Tasks for the certification body .10 5.1 General10 5.2 Surveillance, a
16、ssessment and acceptance of the production control.11 5.3 Evaluation of the results of autocontrol testing of samples.11 5.4 Audit testing of samples taken at the production plant/depot and initial type testing 12 5.5 Initial inspection of the production plant and the production control.13 5.6 Evalu
17、ation of test results during the initial period.14 6 Actions in the event of non-conformity.14 6.1 Actions to be taken by the producer .14 6.2 Actions to be taken by the certification body.14 7 Procedure for third party certification of conformity.15 8 Certificate of conformity and conformity mark 1
18、5 8.1 Indication of conformity15 8.2 Certificate of conformity .15 8.3 Conformity mark 16 9 Requirements for dispatching centres16 9.1 General requirements16 9.2 Tasks for the intermediary16 9.3 Tasks for the third party17 Annex A (normative) Evaluation of the representativeness and the accuracy of
19、the fineness test results .20 A.1 General20 A.2 Sets of results considered20 A.3 Evaluation procedure 20 A.3.1 Introduction20 A.3.2 Symbols 20 Annex B (informative) General definitions22 B.1 Definitions based on the Construction Products Directive 22 B.2 Definitions from or based on EN 45020.22 B.3
20、Definition from EN ISO 8402.22 B.4 Definitions from EN 197-1 and EN 196-7 .23 Bibliography24 EN 450-2:2005 (E) 3 Tables Table 1 Actions to be taken by the Certification Body in the event of non-conformity of the results of autocontrol and/or audit testing .18 Table 2 Confirmation and audit testing o
21、f samples of certified fly ash taken at dispatching centres: properties and minimum testing frequencies a .19 Table A.1 Symbols .21 EN 450-2:2005 (E) 4 Foreword This document (EN 450-2:2005) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which
22、 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 August 2005, and conflicting national standards shall be withdrawn at the latest by August 2006. This document supersedes EN 450:19
23、94. This document includes a Bibliography. 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, H
24、ungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 450-2:2005 (E) 5 1 Scope This document specifies the scheme for the evaluation of conformity of fly ash according to EN
25、450-1. The document provides technical rules for the production control by the producer, including autocontrol testing of samples. It also provides rules for actions to be followed in the event of non-conformity, the procedure for the certification of conformity and requirements for dispatching cent
26、res. 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 196-1, Methods of
27、testing cement Part 1: Determination of strength. EN 196-7, Methods of testing cement Methods of taking and preparing samples of cement. EN 450-1:2005, Fly ash for concrete Part 1: Definition, specifications and conformity criteria. EN 451-2, Method of testing fly ash Part 2: Determination of finene
28、ss by wet sieving. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Specific definitions 3.1.1 certificate of conformity to EN 450-1 document issued under the rules of a certain scheme for the evaluation of conformity indicating that adequate
29、confidence is provided that fly ash is in conformity with EN 450-1 3.1.2 conformity mark protected mark applied on the basis of the certificate of conformity (see 3.1.1) 3.1.3 certified fly ash fly ash for which a certificate of conformity has been issued 3.1.4 initial period immediate period after
30、the first issuing of the certificate of conformity for a fly ash 3.1.5 certification body impartial body, governmental or non-governmental, possessing the necessary competence and responsibility to carry out conformity certification according to given rules of procedure and management 3.1.6 producti
31、on control permanent internal control of fly ash production exercised by the producer consisting of internal quality control and autocontrol testing EN 450-2:2005 (E) 6 3.1.7 production plant facility used by a producer for the production of fly ash: a) power plant with one(several) boiler(s), b) pr
32、ocessing plant, for example for the classification, selection, sieving, drying, blending, grinding and/or carbon reduction of fly ash(es). In the production plant equipment has to be used which is suitable for production of fly ash including the necessary silo capacity for the storage and dispatch o
33、f the fly ash produced, and equipment to test, evaluate and control the fly ash production. This equipment and the production control applied allow the control of production with sufficient accuracy to ensure that the requirements of EN 450-1 are met 3.1.8 new production plant production plant which
34、 is not already producing fly ash certified under this scheme 3.1.9 existing production plant production plant which is already producing fly ash certified under this scheme 3.1.10 depot bulk fly ash handling facility (not located at the production plant) used for the dispatch of fly ash (whether in
35、 bulk or bagged) after transfer or storage where the producer has full responsibility for all aspects of the quality of the fly ash 3.1.11 dispatching centre bulk fly ash handling facility (not located at the production plant) used for the dispatch of fly ash after transfer or storage where an inter
36、mediary has full responsibility for all aspects of the quality of the fly ash 3.1.12 intermediary natural or legal person who takes from the producer fly ash certified according to EN 450-2 and bearing the conformity mark, who undertakes full responsibility for maintaining in a dispatching centre al
37、l aspects of the quality of the fly ash and who supplies the fly ash onwards to a further natural or legal person 3.1.13 confirmation autocontrol testing continual testing carried out by an intermediary which consists of testing of samples taken by the intermediary at the point(s) of release from th
38、e dispatching centre 3.1.14 works quality manual document that provides information on the production control which is applied by a producer at a particular production plant to ensure conformity of the fly ash with the requirements of the relevant product specification standard 3.1.15 producer produ
39、cer is the operator of the production plant or a person (natural or legal) authorised by the production plant. The producer is named in the certificate of conformity 3.2 General definitions See Annex B (informative). EN 450-2:2005 (E) 7 4 Tasks for the producer 4.1 Factory production control 4.1.1 C
40、oncept Production control means the permanent internal control of fly ash production exercised by the producer and consists of internal quality control (see 4.2) and autocontrol testing 1)of samples of fly ash taken at the point of release (see 4.3). NOTE The requirements of EN 450-2 as regards the
41、production control take account of those clauses of EN ISO 9001 which are relevant to the production, process control and testing of fly ash. 4.1.2 Works quality manual The producers documentation and procedures for the production control shall be described in a Works quality manual, which shall ade
42、quately describe, among other things: a) the quality aims and the organisational structure, responsibilities and powers of the responsible staff with regard to product quality and the means to monitor the achievement of the required product quality and the effective operation of the internal quality
43、 control (see 4.1.3); b) the production and quality control techniques, processes and systematic actions that will be used (see 4.2.1, 4.2.3 and 4.3.2); c) the inspections and tests that will be carried out before, during and after production, and the frequency with which they will be carried out (s
44、ee 4.2.2, 4.3.1 and 4.3.3). The Works quality manual prepared by the producer for each production plant shall include an adequate system of documentation (see 4.1.4 and 4.3.4). In case of suitability testing of fly ash from co-combustion of pulverised coal with certain co-combustion materials accord
45、ing to EN 450-1, the procedure of sampling shall be documented in agreement with the certification body. The Works quality manual shall address and document the procedures operated to ensure that the fly ash conforms to the technical specifications. The manual may reference associated documents whic
46、h provide further details of the autocontrol testing of samples and the internal quality control. For the purpose of this scheme, the term Works quality manual shall be considered to include these associated documents. NOTE In the case of an existing quality management system according to EN ISO 900
47、1, the certification body may examine if the corresponding quality manual meets all the requirements of EN 450-1 which are relevant to the production control of fly ash. Provided all the requirements are included, this quality manual may also be applied for product certification. 4.1.3 Management sy
48、stems 4.1.3.1 Quality policy statement The Works quality manual shall include a statement by the management of the producer defining its quality policy, objectives and commitments to the attainment of product quality. 4.1.3.2 Management representative If the producer is a person authorized by the pr
49、oduction plant (see 3.1.15), suitable relations between the producer and the production plant shall be established and documented in order to ensure that the requirements of this document are met. 1)This testing corresponds also to the “further testing of samples“ mentioned in Annex III Section 2 point (i) of the Construction Products Directive 89/106/EEC. EN 450-2:2005 (E) 8 4.1.3.3 Internal audits and management review In order to ensure the continuing suitability and effectivenes
