1、BRITISH STANDARDBS EN196-10:2006Methods of testing cement Part 10: Determination of the water-soluble chromium (VI) content of cementThe European Standard EN 196-10:2006 has the status of a British StandardICS 91.100.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g
2、54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSIBS EN 196-10:2006This British Standard was published under the authority of the Standards
3、Policy and Strategy Committee on 31 August 2006 BSI 2006ISBN 0 580 48940 XNational forewordThis British Standard is the official English language version of EN 196-10:2006. The UK participation in its preparation was entrusted by Technical Committee B/516, Cement and lime, to Subcommittee B/516/12,
4、Sampling and testing, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BS
5、I 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 are responsible for i
6、ts 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 keep UK interests
7、informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 39 and a back cover.The BSI copyright notice displayed in this document indicates when the docum
8、ent was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 196-10July 2006ICS 91.100.30English VersionMethods of testing cement - Part 10: De
9、termination of the water-soluble chromium (VI) content of cementMthodes dessai des ciments - Partie 10 : Dterminationde la teneur du ciment en chrome VI soluble dans leauPrfverfahren fr Zement - Teil 10: Bestimmung desGehaltes an wasserlslichem Chrom (VI) in ZementThis European Standard was approved
10、 by CEN on 19 June 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandard
11、s 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 translationunder the responsibility of a CEN member into its own language and notified to the C
12、entral Secretariat has the same status as the officialversions.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, Luxembourg, Malta, Netherlands, Norway, Po
13、land, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by an
14、y means reservedworldwide for CEN national Members.Ref. No. EN 196-10:2006: ELicensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 196-10:2006 (E) 2 Contents Page Foreword. 4 1 Scope 6 2 Normative references . 6 3 General requirements for testing 7 3.1 Number
15、of tests. 7 3.2 Repeatability and reproducibility 7 3.3 Expression of masses, volumes, factors and results. 7 3.4 Blank determinations 7 4 Reagents 8 5 Apparatus 8 6 Preparation of a test sample of cement 10 7 Extraction procedure 10 7.1 Principle . 10 7.2 Preparation of mortar . 10 7.3 Filtration.
16、11 8 Determination of chromium (VI) 11 8.1 General. 11 8.2 Measurement of absorbance without oxidation 12 8.3 Measurement of absorbance with oxidation 12 9 Calculation and expression of results 13 9.1 Calculation. 13 9.2 Expression of results 14 10 Reporting of results 14 11 Repeatability and reprod
17、ucibility 14 Annex A (normative) Evaluation of the compliance of cement with the regulatory limit in Directive 2003/53/EC on water-soluble hexavalent chromium content . 15 Foreword. 15 A.1 Scope 16 A.2 Normative references . 16 A.3 Terms and definitions. 16 A.4 Factory production control by the manu
18、facturer 17 A.5 Tasks for the verification body 19 A.6 Compliance criteria. 22 A.7 Compliance assessment 22 A.8 Actions in the event of non-compliance. 24 A.9 Requirements for dispatching centres . 25 Annex B (informative) Guidance on the application of this European Standard to the determination of
19、 the water soluble chromium (VI) content of cement-containing preparations 26 B.1 Background . 26 B.2 Extraction procedure 26 B.3 Filtration procedure 27 B.4 Calculation and reporting of results . 27 B.5 Evaluation of compliance. 27 Licensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Un
20、controlled Copy, (c) BSIEN 196-10:2006 (E) 3 Annex C (informative) Guidance on screening test method (1) using paste extraction - method based on DS 1020 . 28 C.1 Object and field of application. 28 C.2 Principle . 28 C.3 Reagents 28 C.4 Apparatus 29 C.5 Procedure 29 C.6 Calculation of results 30 C.
21、7 Reporting result 30 C.8 Precision and accuracy 30 C.9 Report. 30 Annex D (informative) Guidance on screening test method (2) using paste extraction method based on TRGS 613 31 D.1 Significance and use 31 D.2 Basic principles of the method 31 D.3 Apparatus 31 D.4 Materials. 32 D.5 Construction of a
22、 calibration curve 32 D.6 Sample preparation and analysis 33 D.7 Evaluation and Interpretation 33 D.8 Health and safety 34 Annex E (informative) Guidance on the photometric determination of chromium reduction capacity in cements 35 Foreword. 35 E.1 Summary 35 E.2 Scope 35 E.3 Apparatus 35 E.4 Reagen
23、ts 36 E.5 Procedure 37 E.6 Calculations. 37 E.7 Result . 38 E.8 Control of instrument . 38 Bibliography . 39 Licensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 196-10:2006 (E) 4 Foreword This document (EN 196-10:2006) has been prepared by Technical Committe
24、e CEN/TC 51 “Cement and building limes”, the secretariat of which is held by IBN/BIN. 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 2007, and conflicting national standards shall be with
25、drawn at the latest by January 2007. This European Standard on the methods of testing cement comprises the following Parts: 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 testing cemen
26、t Part 3: Determination of setting time and soundness EN 196-5, Methods of testing cement Part 5: Pozzolanicity test for pozzolanic cement EN 196-6, Methods of testing cement Part 6: Determination of fineness EN 196-7, Methods of testing cement Part 7: Methods of taking and preparing samples of ceme
27、nt EN 196-8, Methods of testing cement Part 8: Heat of hydration Solution method EN 196-9, Methods of testing cement Part 9: Heat of hydration Semi-adiabatic method NOTE A previous part, EN 196-21: Methods of testing cement Part 21: Determination of the chloride, carbon dioxide and alkali content of
28、 cement, has been revised and incorporated into EN 196-2. Another document, ENV 196-4 Methods of testing cement Part 4: Quantitative determination of constituents, has been drafted and will be published as a CEN Technical Report. According to the CEN/CENELEC Internal Regulations, the national standa
29、rds organizations of the following countries 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, Rom
30、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 196-10:2006 (E) 5 Introduction This European Standard specifies the reference method for the determination of water-soluble chromium
31、(VI) content of cement that consists of two stages, an extraction procedure and an analysis of the filtered extract. This European Standard test method has adopted the principle that extraction is carried out under conditions approximating as closely as possible to those during the commercial use of
32、 cement. Consequently extraction is by standard mortar and subsequent filtration. Other extraction procedures based on paste extraction have traditionally been used and are included in Annexes C and D for use as screening tests, in factory production control or laboratories not having access to equi
33、pment specified in EN 196-1 for the production of mortar. The use of paste extraction is outside the normal conditions of use of cement This European Standard test method has adopted the principle of analysis by spectrophotometry. The procedures set down generally permit the analysis to be carried o
34、ut without the need for an oxidation step. On rare occasions some cements may contain reducing species, not controlled by the routine method, that interfere with the analysis and require an oxidation step. Inter-laboratory testing has demonstrated that it is necessary to include an initial assessmen
35、t test in order to observe the effects on the analysis. By comparing the results obtained from the method with and without the oxidation step, it can be determined whether, for that cement, the reference method should include the oxidation step. Other instrumental procedures may be used for the anal
36、ysis of the filtered extract provided they are calibrated against the analysis of the filtered extract using the reference procedure. In case of dispute or failure to comply with a regulatory limit only the reference method shall be used. This European Standard test method has drawn heavily on the D
37、anish Standard DS 1020 and the extraction procedure developed by the French cement industry association ATILH. Careful consideration has been given to the details of the German TRGS 613 method developed by Germanys Hazardous Materials Committee in support of Industrial Regulations for Hazardous Mate
38、rials. Notice was also taken of the British Cement Association inherent colour method; the draft method produced by CEN/TC 193/WG1, reference N680, for cement-based adhesives; European Standard method EN 420 for protective gloves; and to the method, reference ID-215, developed by the Occupational Sa
39、fety and Health Administration, Salt Lake, USA. The USA Portland Cement Association, Research and Development report Serial No. 2554 “Review and evaluation of analytical methods for the determination of hexavalent chromium in hydraulic cements and clinker” by Waldemar A. Klemm was found to be most h
40、elpful in resolving technical issues. The final draft by CEN/TC292 of CEN/TR 14589 confirmed that chromium species and solubilities are sensitive to pH and redox conditions and care has been taken to address these in this European Standard by controlling sample exposure to air, by adding the indicat
41、or to the alkaline filtered extract and by precisely specifying the pH for the analytical procedure. This European Standard test method was developed in order to provide a reference test method for use in the evaluation of compliance of cement with the requirements in Directive 2003/53/EC of the Eur
42、opean Parliament and of the Council of 18 June 2003 amending for the 26thtime Council Directive 76/769/EEC relating to restrictions on the marketing and use of certain dangerous substances and preparations (nonylphenol, nonylphenol ethoxylate and cement). A system for the evaluation of compliance of
43、 cement is set out in Annex A. Licensed Copy: Wang Bin, na, Fri Nov 03 01:26:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 196-10:2006 (E) 6 1 Scope This European Standard specifies the method for the determination of the water-soluble chromium (VI) content of cement. A reference method is describ
44、ed consisting of two stages, an extraction procedure and an analysis of the filtered extract. Guidance on other extraction procedures, suitable for screening tests, for factory production control or other purposes, is given but in case of dispute or failure to comply with a regulatory limit only the
45、 reference method is used. The reference method has alternatives whereby the filtered extract may be subjected to an oxidation step or not. The criteria by which the appropriate procedure is selected are set down. Other instrumental procedures may be used for the analysis of the filtered extract pro
46、vided they are calibrated against the analysis of the filtered extract using the reference procedure. In the case of a dispute, only the reference method is used. Annex A sets out a normative procedure to be followed in case this test method is used as the basis for evaluation of conformity of a cem
47、ent with the regulatory limit in Directive 2003/53/EC. This European Standard describes a method that applies to cements. It may have wider applicability but this would need to be verified by testing on a product-by-product basis. Guidance in the possible application of this European Standard to the
48、 determination of the water-soluble chromium (VI) content of cement-containing preparations is given in Annex B. Annexes C and D provide information on other test procedures based on paste extraction and thus depart from the performance of cement in its normal conditions of use. They may be carried
49、out with or without the oxidation process. Users should be aware that results using these methods might be significantly different to those obtained by the reference method. In the case of dispute or failure to comply with the regulatory limit only the reference method is used. Annex E provides guidance on a method for determination of the excess reducing agent content of cement as used in the factory internal control system of some countries. Manufacturers using such an internal control method should assure themselves of the relevance of res
