1、BSI Standards PublicationBS EN 14216:2015Cement Composition,specifications and conformitycriteria for very low heatspecial cementsBS EN 14216:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14216:2015. It supersedes BS EN 14216:2004 which is withdrawn.The U
2、K participation in its preparation was entrusted to Technical Committee B/516/6, Cement specifications.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are
3、responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 82961 1 ICS 91.100.10 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the
4、Standards Policy and Strategy Committee on 31 July 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14216 July 2015 ICS 91.100.10 Supersedes EN 14216:2004English Version Cement - Composition, specifications and confor
5、mity criteria for very low heat special cements Ciments - Composition, spcifications et critres de conformit de ciments speciaux trs faible chaleur dhydratation Zement - Zusammensetzung, Anforderungen und Konformittskriterien von Sonderzement mit sehr niedriger Hydratationswrme This European Standar
6、d was approved by CEN on 10 April 2015. 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 concerning such
7、 national standards may be obtained on application to the CEN-CENELEC 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 into its own
8、language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gr
9、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUN
10、G CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14216:2015 EBS EN 14216:2015EN 14216:2015 (E) 2 Contents Page European foreword . 3 Introduction . 4 1 Scope 5
11、2 Normative references 5 3 Terms and definitions . 5 4 Very low heat special cement . 6 5 Constituents . 6 6 Composition and notation 6 7 Mechanical, physical, heat of hydration, chemical and durability requirements . 8 7.1 Mechanical requirements - Standard strength . 8 7.2 Physical requirements 8
12、7.2.1 Initial setting time 8 7.2.2 Soundness 8 7.2.3 Heat of hydration . 8 7.3 Chemical requirements . 8 7.4 Durability requirements 9 7.5 Dangerous substances . 9 8 Standard designation 9 9 Conformity criteria . 10 9.1 General requirements 10 9.2 Conformity criteria for mechanical, physical and che
13、mical properties and evaluation procedure . 11 9.2.1 General 11 9.2.2 Statistical conformity criteria . 12 9.2.3 Single result conformity criteria . 14 9.3 Conformity criteria for cement composition . 15 9.4 Conformity criteria for properties of the cement constituents . 15 Annex ZA (informative) Cl
14、auses of this European Standard addressing the provisions of EU Construction Products Regulation 16 ZA.1 Scope and relevant characteristics . 16 ZA.2 Procedure for AVCP of very low heat special cements . 18 ZA.2.1 System of AVCP . 18 ZA.2.2 Declaration of performance (DoP) . 19 ZA.2.2.1 General 19 Z
15、A.2.2.2 Content 20 ZA.2.2.3 Example of DoP 20 ZA.3 CE marking and labelling 22 Bibliography 24 BS EN 14216:2015EN 14216:2015 (E) 3 European foreword This document (EN 14216:2015) has been prepared by Technical Committee CEN/TC 51 “Cement and building limes”, the secretariat of which is held by NBN.
16、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 January 2016, and conflicting national standards shall be withdrawn at the latest by April 2017. Attention is drawn to the possibility that some of
17、the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14216:2004. Compared to the version EN 14216:2004 the following major changes have been included in this docu
18、ment: use of the terminology given by the Construction Products Regulation (Regulation (EU) No 305/2011); a clause “Dangerous substances” has been added; the former Annex A (informative) “Water-soluble hexavalent chromium” has been deleted; Annex ZA has been revised in accordance with the Constructi
19、on Products Regulation (Regulation (EU) No 305/2011). This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. For relationship with Regulation (EU) No. 305/2011, see informative Annex ZA, which is an integral part of this docum
20、ent. 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 indicated that, in view of the large numbers of different cements involved, it was considered necessary to
21、 separate the “common cements“, which are now covered by EN 197-1, from special cements, i.e. those with special properties or those having hardening processes not mainly dependent on the hydration of calcium silicates. The low heat property for common cements is covered by EN 197-1. A need for cont
22、rol of heat development during hydration of concrete is referred to in EN 206. Classification of cements with respect to heat of hydration is one method whereby heat development of concrete can be controlled. The purpose of this European Standard is therefore to specify the heat of hydration for ver
23、y low heat special cements. Composition and other requirements are those specified in EN 197-1 for common cements. Conformity criteria are additionally specified. The requirements in this European Standard are based on the results of tests on cement in accordance with EN 196-1, EN 196-2, EN 196-3, E
24、N 196-5, EN 196-7, EN 196-8 and EN 196-9. The scheme for the evaluation of conformity in EN 197-2 is applicable to very low heat special cements. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European St
25、andard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
26、Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14216:2015EN 14216:2015 (E) 4 Introduction It is recognized that different cements have different properties and performance. Those performance tests now available (i.e. setting time, strength, soundness and heat of hydration) have bee
27、n included in this European Standard. 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 highly recommended that the choice of cement, esp
28、ecially 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 use. BS EN 14216:2015EN 14216:2015 (E) 5 1 S
29、cope This European Standard defines and gives the specifications of six distinct very low heat special 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 single strength c
30、lass having a limited heat of hydration value. The definition also includes requirements the constituents have to meet and the mechanical, physical, chemical and heat of hydration requirements for these products. This European Standard also states the conformity criteria and the related rules. Neces
31、sary durability requirements are also given. In 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 this European Standard but should be dealt with in accord
32、ance with national standards or regulations or can be agreed between the parties concerned. NOTE 1 The word “cement“ in this European Standard is used to refer to very low heat special cement unless otherwise indicated. NOTE 2 The risk of early-age thermal cracking in concrete depends upon the prope
33、rties and execution and is, therefore, also dependent on factors other than the heat of hydration of the cement. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the
34、edition cited applies. For undated 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 196-2, Methods of testing cement - Part 2: Chemical analysis of cement EN 196-3, Methods of test
35、ing cement - Part 3: Determination of setting time and soundness EN 196-5, Methods of testing cement - Part 5: Pozzolanicity test for pozzolanic cement 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: Heat o
36、f hydration - Solution method EN 196-9, Methods of testing cement - Part 9: Heat of hydration - Semi-adiabatic method EN 197-1, Cement - Part 1: Composition, specifications and conformity criteria for common cements EN 197-2:2014, Cement - Part 2: Conformity evaluation 3 Terms and definitions For th
37、e purposes of this document, the terms and definitions given in EN 197-1 apply. BS EN 14216:2015EN 14216:2015 (E) 6 4 Very low heat special cement Very low heat special cement is a hydraulic binder, i.e. a finely ground inorganic material which, when mixed with water, forms a paste which sets and ha
38、rdens by means of hydration reactions and processes and which, after hardening, retains its strength and stability even under water. It has hydration reactions and processes identical to those of common cements (see EN 197-1) but through composition, fineness or reactivity of constituents the hydrat
39、ion process is slower. Very low heat special cement is particularly suitable for dams and other similar massive construction, where the dimensions of the structure have a low surface/volume ratio. In this case, the dispersion of heat, developed during the hydration of the cement, is very slow and th
40、erefore it is possible to have large increases in temperature. Thermal gradients then develop between internal and external zones of the concrete setting up internal stress which can be greater than the tensile strength of the concrete and lead to cracking and breakdown. These same properties make v
41、ery low heat special cement unsuitable for use in reinforced, elevated, concrete structures, e.g. bridges or buildings. NOTE Low heat common cements or low heat low early strength blastfurnace cements conforming to EN 197-1 are suitable for dams and other similar massive construction, depending on t
42、he design of the concrete and method of construction. 5 Constituents The constituents of very low heat special cements shall conform to the requirements of the constituents of common cements specified in EN 197-1. 6 Composition and notation The six products in the family of very low heat special cem
43、ents, covered by this European Standard, and their notation are given in Table 1. They are grouped into three main cement types as follows: VLH III Blastfurnace cement; VLH IV Pozzolanic cement; VLH V Composite cement. The composition of each of the six products in the family of very low heat specia
44、l cements shall be in accordance with Table 1. For 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 constituents plus the necessary calcium sulfate and an
45、y additives. BS EN 14216:2015EN 14216:2015 (E) 7 Table 1 The 6 products in the family of very low heat special cements Main type Notation of the 6 products (types of very low heat special cement) Composition (percentage by mass in % aMain constituents Minor additional constituents Clinker Blast-furn
46、ace slag Silica fume Pozzolana Fly ash natural natural calcined siliceous calcareous K S D bP Q V W VLH III Blastfurnace cement VLH III/B 2034 6680 05 VLH III/C 519 8195 05 VLH IV Pozzolanic cement cVLH IV/A 6589 05 VLH IV/B 4564 05 VLH V Composite cement cVLH V/A 4064 1830 05 VLH V/B 2038 3149 05 a
47、The values of the table refer to the sum of the main and minor additional constituents. bThe proportion of silica fume is limited to 10 %. cIn pozzolanic cements VLH IV/A and VLH IV/B and in composite cements VLH V/A and VLH V/B the main constituents other than clinker shall be declared by designati
48、on of the cement (for example see Clause 8). BS EN 14216:2015EN 14216:2015 (E) 8 7 Mechanical, physical, heat of hydration, chemical and durability requirements 7.1 Mechanical requirements - Standard strength The standard strength of a very low heat special cement is the compressive strength determi
49、ned in accordance with EN 196-1 at 28 d and shall conform to the requirements in Table 2. One class of standard strength is included; class 22,5 (see Table 2). Table 2 Mechanical and physical requirements given as characteristic values Strength class Compressive strength MPa Initial setting time Soundness (expansion) Standard strength 28 d min mm 22,5 22,5 42,5 75 10 7.2 Physical requirements 7.2.1 Initial setting time The initial setting time, determined in accordance with EN 196-3, shall conform t
