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1、BRITISH STANDARD BS EN 197-4:2004 Cement Part 4: Composition, specifications and conformity criteria for low early strength blastfurnace cements The European Standard EN 197-4:2004 has the status of a British Standard ICS 91.100.10 ? Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:43:10 GM
2、T+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 197-4:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 July 2004 BSI 19 July 2004 ISBN 0 580 44106 7 National foreword This British Standard is the official English language version of EN
3、197-4:2004. EN 197-4 is a candidate “harmonized” European standard and fully takes into account the requirements of the European Commission mandate M/114, Cement, building limes and other hydraulic binders, given under the EU Construction Products Directive (89/106/EEC), an intended to lead to CE ma
4、rking. The date of applicability of EN 197-4 as a “harmonized” European standard, i.e. the date after which this standard may be used for CE marking purposes, is subject to an announcement in the Official Journal of the European Communities. The Commission in consultation with Member States has agre
5、ed a transition period for the co-existence of “harmonized” European Standards and their corresponding national standard(s). It is intended that this period will comprise a period, usually nine months, after the date of availability of the European Standard, during which any required changes to nati
6、onal regulations are to be made, followed by a further period, usually of 12 months, for the implementation of CE marking. At the end of this co-existence period, the national standard(s) will be withdrawn. EN 197-4 is the subject of transitional arrangements agreed under the Commission mandate. In
7、the UK, the corresponding national standard is: BS 146:2002, Specification for blastfurnace cements with strength properties outside the scope of BS EN 197-1; and based on this transition period of twenty-one months, BS 146:2002 would be withdrawn in January 2006. NOTEThis date is approximate. Users
8、 of this standard should contact BSI Customer Services for confirmation of withdrawal. The UK participation in its preparation was entrusted by Technical Committee B/516, Cement and lime, to Subcommittee B/516/6, Cement specifications, which has the responsibility to: A list of organizations represe
9、nted 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 be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index
10、”, 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 are responsible for its correct application. Compliance with a British Standard does not of itself confe
11、r immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee 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
12、UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 22, an 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. Da
13、teComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:43:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 197-4 April 2004 ICS 91.100.10 English version Cement - Part 4: Composition, specifications and conformity criteria for low early
14、 strength blastfurnace cements Ciment - Partie 4 : Composition, spcification et critres de conformit des ciments de haut fourneau et faible rsistance court terme Zement - Teil 4: Zusammensetzung, Anforderungen und Konformittskriterien von Hochofenzement mit niedriger Anfangsfestigkeit This European
15、Standard was approved by CEN on 19 September 2003. 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 references conc
16、erning such national standards may be obtained on application to the Central Secretariat 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
17、 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou
18、rg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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 2004 CENAll rights of explo
19、itation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 197-4:2004: E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:43:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 197-4:2004 (E) 2 Contents Page Foreword3 Introduction .4 1Scope.4 2Normative refer
20、ences 4 3Terms and definitions5 4Low early strength blastfurnace cement.5 5Constituents.5 6Composition and notation 5 7Mechanical, physical, chemical and durability requirements.6 8Standard designation 8 9Conformity criteria.8 Annex A (informative) Water-soluble hexavalent chromium 14 Annex ZA (info
21、rmative) Clauses of this European Standard addressing the provisions of EU Construction Products Directive .15 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:43:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 197-4:2004 (E) 3 Foreword This document (EN 197-4:2004) has been prepared by Te
22、chnical Committee CEN/TC 51 “Cement and building limes”, the secretariat of which is held by IBN. 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 October 2004, and conflicting national standards s
23、hall be withdrawn at the latest by October 2004. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, w
24、hich is an integral part of this document. Annex A is informative. This document includes a Bibliography. The various stages in the development of a European Standard for common cement, in response to the preliminary Mandate given to CEN by the EC and the EFTA, are described in EN 197-1. It is indic
25、ated that, in view of the large numbers of different cements involved, it was considered necessary to separate the “common cements“, which are now covered by EN 197-1, from special cements i.e. those with additional or special properties or those having hardening processes not mainly dependent on th
26、e hydration of calcium silicates. The strength attained at 28 days is the important criterion in classifying cement for most uses. In order to achieve a specific strength class at 28 days the early strength, at 2 days or at 7 days, can vary and some types of cement may not attain the minimum early s
27、trengths specified in EN 197-1 for common cements. The heat of hydration is linked to the early reactivity and lower early strengths indicate lower heat evolution and lower temperatures in concrete. For these cements additional precautions in use can be necessary to ensure adequate curing and safety
28、 in construction. The purpose of this EN 197-4 is to specify the composition requirements and conformity requirements for low early strength blastfurnace cements and low early strength blastfurnace cements with low heat of hydration. The requirements in EN 197-4 are based on the results of tests on
29、cement in accordance with EN 196 Parts 1, 2, 3, 7, 8, 9 and 21. The scheme for the evaluation of conformity of low early strength blastfurnace cements to EN 197-4 is included in EN 197-2. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countri
30、es are bound to implement this European Standard: 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, Switzerlan
31、d and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:43:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 197-4:2004 (E) 4 Introduction It is recognised that different cements have different properties and performance. Those performance tests now available (i.e. setting tim
32、e, strength, soundness and heat of hydration), have been included in this EN 197-4. In addition, work is being carried out by CEN/TC 51 to identify any additional tests which are needed to specify further performance characteristics of cement. Until further performance tests are available it is high
33、ly recommended that the choice of cement, especially the type and/or strength class in relation to the requirements for durability depending on exposure class and type of construction in which it is incorporated, follows the appropriate standards and/or regulations for concrete valid in the place of
34、 use. 1 Scope This EN 197-4 defines and gives the specifications of 3 distinct low early strength blastfurnace cement products and their constituents. The definition of each cement includes the proportions in which the constituents are to be combined to produce these distinct products in a range of
35、three strength classes. The definition also includes requirements the constituents have to meet and the mechanical, physical, chemical, including where appropriate, heat of hydration, requirements and strength classes. This EN 197-4 also states the conformity criteria and the related rules. Necessar
36、y durability requirements are also given. NOTE 1In addition to the specified requirements, an exchange of additional information between the cement producer and user can be helpful. The procedures for such an exchange are not within the scope of EN 197-4 but should be dealt with in accordance with n
37、ational standards or regulations or can be agreed between the parties concerned. NOTE 2The word “cement“ in this EN 197-4 is used to refer only to low early strength blastfurnace cements unless otherwise indicated. 2 Normative references This European Standard incorporates by dated or undated refere
38、nce, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorpora
39、ted in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 196-1, Methods of testing cement Part 1 : Determination of strength. EN 196-2, Methods of testing cement Part 2 : Chemical analysis of cement. EN 196-3, Met
40、hods of testing cement Part 3 : Determination of setting time and soundness. EN 196-7, Methods of testing cement Part 7 : Methods of taking and preparing samples of cement. EN 196-8, Methods of testing cement - Part 8 : Determination of heat of hydration Solution method. EN 196-9, Methods of testing
41、 cement Part 9 : Determination of heat of hydration Semi-adiabatic method. EN 196-211) , Methods of testing cement Part 21 : Determination of the chloride, carbon dioxide and alkali content of cement. 1) EN 196-21 is currently being incorporated into EN 196-2. Licensed Copy: sheffieldun sheffieldun,
42、 na, Tue Nov 07 09:43:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 197-4:2004 (E) 5 EN 197-1:2000, Cement Part 1 : Composition, specifications and conformity criteria for common cements. EN 197-1:2000/A1:2004, Cement Part 1 : Composition, specifications and conformity criteria for common cements
43、. EN 197-2:2000, Cement Part 2 : Conformity evaluation. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 197-1:2000 and the following apply. 3.1 type of low early strength blastfurnace cement one of the 3 products (see Table 1) in the family o
44、f low early strength cements 3.2 heat of hydration quantity of heat developed by the hydration of a cement within a given period of time 3.3 low heat low early strength blastfurnace cement low early strength blastfurnace cement with a limited heat of hydration 4 Low early strength blastfurnace cemen
45、t Low early strength blastfurnace cement is a hydraulic binder, i.e. a finely ground inorganic material which, when mixed with water, forms a paste which sets and hardens by means of hydration reactions and processes and which, after hardening, retains its strength and stability even under water. It
46、 has hydration reactions and processes identical to those of common cements (see EN 197-1) but through composition, fineness or reactivity of constituents the early hydration process is slower. 5 Constituents For the purpose of this European Standard the requirements for constituents specified in cl
47、ause 5 of EN 197-1:2000 apply. 6 Composition and notation The 3 products in the family of low early strength blastfurnace cements, covered by this European Standard, and their notation are given in Table 1. They are grouped into one main cement type: CEM III Blastfurnace cement The composition of th
48、e different low early strength blastfurnace cements shall be in accordance with Table 1. NOTEFor clarity in definition, the requirements for the composition refer to the sum of all main and minor additional constituents. The final cement should be understood as the main and minor additional constitu
49、ents plus the necessary calcium sulfate (see 5.4 of EN 197-1:2000) and any additives (see 5.5 of EN 197-1:2000). Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:43:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 197-4:2004 (E) 6 Table 1 The 3 products in the family of low early strength blastfurnace cements Composition (proportion by mass, in % a) Main constituents Clinker Blastfurnace Slag Minor additional constituents Main types Notation of the 3 products (ty