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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 M
2、ay 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, Ce
3、ment 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) wh
4、ich 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, i
5、ncluding 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 m
6、ay 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
7、 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 any enquiries on the interpretation, or proposals for change,
8、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 24, an inside back cover and a back cover. The BSI copyright notice
9、displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.DateComments w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 450-2 February 2005 ICS 91.100.30 Supersedes EN 450:1994 English version Fly ash for concret
10、e - Part 2: Conformity evaluation 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 stipulat
11、e 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 Central Secretariat or to any CEN member. This European Standard exist
12、s 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodi
13、es of Austria, Belgium, Cyprus, 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
14、 STANDARDIZATION COMIT EUROPEN 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: E w w w . b z f x w . c o m EN 4
15、50-2:2005 (E) 2 Contents Page Foreword4 1 Scope 5 2 Normative references5 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 control8 4.3 Autocontrol testing of samples10 5 Tasks for the certi
16、fication body .10 5.1 General10 5.2 Surveillance, assessment 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 testing12 5.5 Initial inspection of the produc
17、tion plant and the production control.13 5.6 Evaluation 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
18、 8 Certificate of conformity and conformity mark 15 8.1 Indication of conformity15 8.2 Certificate of conformity.15 8.3 Conformity mark16 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) Evaluatio
19、n of the representativeness and the accuracy of the fineness test results .20 A.1 General20 A.2 Sets of results considered20 A.3 Evaluation procedure20 A.3.1 Introduction20 A.3.2 Symbols20 Annex B (informative) General definitions22 B.1 Definitions based on the Construction Products Directive 22 B.2
20、 Definitions from or based on EN 45020.22 B.3 Definition from EN ISO 8402.22 B.4 Definitions from EN 197-1 and EN 196-7 .23 Bibliography24 w w w . b z f x w . c o m 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 autoc
21、ontrol and/or audit testing.18 Table 2 Confirmation and audit testing of samples of certified fly ash taken at dispatching centres: properties and minimum testing frequencies a.19 Table A.1 Symbols.21 w w w . b z f x w . c o m EN 450-2:2005 (E) 4 Foreword This document (EN 450-2:2005) has been prepa
22、red by Technical Committee CEN/TC 104 “Concrete and related products”, the 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 August 2005, and conflicting nationa
23、l standards shall be withdrawn at the latest by August 2006. This document supersedes EN 450:1994. 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:
24、Austria, Belgium, Cyprus, 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. w w w . b z f x w . c o m EN
25、 450-2:2005 (E) 5 1 Scope This document specifies the scheme for the evaluation of conformity of fly ash according to EN 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 followe
26、d in the event of non-conformity, the procedure for the certification of conformity and requirements for dispatching centres. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For un
27、dated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1, Methods of 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
28、: Definition, specifications and conformity criteria. EN 451-2, Method of testing fly ash Part 2: Determination of fineness 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 t
29、o EN 450-1 document issued under the rules of a certain scheme for the evaluation of conformity indicating that adequate 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 cer
30、tified fly ash fly ash for which a certificate of conformity has been issued 3.1.4 initial period immediate period after 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
31、 responsibility to carry out conformity certification according to given rules of procedure and management 3.1.6 production control permanent internal control of fly ash production exercised by the producer consisting of internal quality control and autocontrol testing w w w . b z f x w . c o m EN 4
32、50-2:2005 (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) processing plant, for example for the classification, selection, sieving, drying, blending, grinding and/or carbon reduction of fly ash(es). In the product
33、ion plant equipment has to be used which is suitable for production of fly ash including the necessary silo capacity for the storage and dispatch of the fly ash produced, and equipment to test, evaluate and control the fly ash production. This equipment and the production control applied allow the c
34、ontrol 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 is not already producing fly ash certified under this scheme 3.1.9 existing production plant production plant which is already producing fly ash certifi
35、ed 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 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 ce
36、ntre bulk fly ash handling facility (not located at the production plant) used for the dispatch of fly ash after transfer or storage where an intermediary 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
37、 ash certified according to EN 450-2 and bearing the conformity mark, who undertakes full responsibility for maintaining in a dispatching centre all 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
38、 continual testing carried out by an intermediary which consists of testing of samples taken by the intermediary at the point(s) of release from the dispatching centre 3.1.14 works quality manual document that provides information on the production control which is applied by a producer at a particu
39、lar production plant to ensure conformity of the fly ash with the requirements of the relevant product specification standard 3.1.15 producer producer 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 o
40、f conformity 3.2 General definitions See Annex B (informative). w w w . b z f x w . c o m EN 450-2:2005 (E) 7 4 Tasks for the producer 4.1 Factory production control 4.1.1 Concept Production control means the permanent internal control of fly ash production exercised by the producer and consists of
41、internal quality control (see 4.2) and autocontrol testing1) of samples of fly ash taken at the point of release (see 4.3). NOTE The requirements of EN 450-2 as regards the production control take account of those clauses of EN ISO 9001 which are relevant to the production, process control and testi
42、ng 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 adequately describe, among other things: a) the quality aims and the organisational structure, responsibilities and powers of the
43、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 control (see 4.1.3); b) the production and quality control techniques, processes and systematic actions that will be used (see
44、 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 (see 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 adequa
45、te 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 according to EN 450-1, the procedure of sampling shall be documented in agreement with the certification body. The Works quality manu
46、al shall address and document the procedures operated to ensure that the fly ash conforms to the technical specifications. The manual may reference associated documents which provide further details of the autocontrol testing of samples and the internal quality control. For the purpose of this schem
47、e, 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 9001, the certification body may examine if the corresponding quality manual meets all the requirements of EN 450-1 which are rele
48、vant 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 systems 4.1.3.1 Quality policy statement The Works quality manual shall include a statement by the management of the producer def
49、ining 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 production 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) o