《BS-EN-196-2-19951.pdf》由会员分享，可在线阅读，更多相关《BS-EN-196-2-19951.pdf（52页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 196-2:1995 Methods of testing cement Part 2: Chemical analysis of cement The European Standard EN 196-2:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 196-2:1995 This Br
2、itish Standard, having been prepared under the direction of the Technical Committee B/516, was published under the authority of the Standards Board and comes into effect on 15 March 1995 BSI 03-1999 The following BSI references relate to the work on this standard: Committee reference B/516 Special a
3、nnouncement in BSI News December 1992 ISBN 0 580 21489 3 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normun
4、gsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standard FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNati
5、onal Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificaci
6、n SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BS
7、I BS EN 196-2:1995 BSI 03-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 196-23 National annex NA (informative) Determination of total sulfur25 National annex NB (informative) Determination of minor constituents (TiO2 and P2O5) and free lime2
8、5 National annex NC (informative) Determination of propylene glycol content27 National annex ND (informative) Method of analysis of cements by X-ray fluorescence spectrometry 28 National annex NE (informative) Methylene blue test36 National annex NF (informative) Determination of total organic carbo
9、n38 National annex NG (informative) Committees responsibleInside back cover National annex NH (informative) Cross-references Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 196-2:1995 ii BSI 03-1999 National foreword
10、This British Standard has been prepared under the direction of the Technical Committee B/516, Cement and lime. It is the English language version of EN 196-2:1994 Methods of testing cement Part 2: Chemical analysis of cement, published by the European Committee for Standardization (CEN). EN 196-2 wa
11、s drawn up by CEN Technical Committee 51, Cement and building limes, as Part 2 of a series on testing cement which was originally accepted by CEN on 15 November 1985 and made available on 12 May 1987. The UK gave a negative vote at the final voting stage and, under the CEN Rules then in force, was n
12、ot obliged to implement this Part. A second formal vote was taken in November 1992 when the UK again gave a negative vote but, under the CEN Rules now in force, is obliged to implement this Part which supersedes BS 4550-2:1970, which is now withdrawn. BS 4550-2:1970 included some useful UK methods o
13、f analysis which do not appear in EN 196-2. These are included for information in the following national annexes (clause numbers refer to BS 4550-2:1970). National annex NA Determination of total sulfur (clause 12) National annex NB Determination of minor constituents(TiO2 and P2O5) and free lime (c
14、lause 14) National annex NC Determination of propylene glycol content (clause 18). The pozzolanicity test for pozzolanic cements in clause 15 of BS 4550-2:1970 is now published in BS EN 196-5:1995. The methods for determining alkali content and chloride content in clauses 16 and 17, respectively, of
15、 BS 4550-2:1970 are now published in BS EN 196-21:1992. Though the methods given in this standard are generally the reference procedures, the great majority of cement analyses at the present time are carried out using X-ray fluorescence spectrometry. A method suitable for the major oxide analysis of
16、 cements conforming to BS 12 is given in National annex ND. There are limiting requirements in BS 7583 and in the European Prestandard specification for cement, ENV 197-1, for methylene blue adsorption and total organic carbon content of limestone used as a main constituent of cement. National annex
17、 NE and National annex NF give appropriate methods for the determination of methylene blue adsorption and of total organic carbon content, respectively. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their cor
18、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 46, an inside back cover and a back cover. This standard has be
19、en updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE N
20、ORM EN 196-2 December 1994 ICS 91.100.10Supersedes EN 196-2:1987 Descriptors: Cement, chemical analysis, determination of content, losses on ignition, sulfates, sulfides, manganese, silicon dioxide, iron oxides, aluminium oxides, calcium oxides, magnesium oxides, evaporation residue, gravimetric ana
21、lysis, spectrophotometric analysis, EDTA. English version Methods of testing cement Part 2: Chemical analysis of cement Mthodes dessai des ciments Partie 2: Analyse chimique des ciments Prverfahren fr Zement Teil 2: Chemische Analyse von Zement This European Standard was approved by CEN on 1994-12-1
22、2. 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 national standards may be obtained o
23、n 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 language and notified to the Central Secretaria
24、t has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for
25、Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 196-2:1994 E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c
26、) BSI EN 196-2:1994 BSI 03-1999 2 Foreword This European Standard was drawn up by CEN/TC 51, Cement and building limes, the secretariat of which is held by IBN. The standard on the methods of testing cement comprises the following Parts: EN 196-1, Methods of testing cement Part 1: Determination of s
27、trength. EN 196-2, Methods of testing cement Part 2: Chemical analysis of cement. EN 196-3, Methods of testing cement Part 3: Determination of setting time and soundness. ENV 196-4, Methods of testing cement Part 4: Quantitative determination of constituents. EN 196-5, Methods of testing cement Part
28、 5: Pozzolanicity test for pozzolanic cements. 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 cement. EN 196-21, Methods of testing cement Part 21: Determination of the chloride, carbon dio
29、xide and alkali content of cement. 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 June 1995, and conflicting national standards shall be withdrawn at the latest by June 1995. This European Standa
30、rd supersedes EN 196-2:1987. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switz
31、erland, United Kingdom. Contents Page Foreword2 1Scope5 2Normative references5 3General requirements for testing5 4Reagents5 5Apparatus11 6Preparation of a cement sample12 7Determination of loss on ignition12 8Gravimetric determination of sulfate13 9Determination of residue insoluble in hydrochloric
32、 acid and sodium carbonate14 10Determination of residue insoluble in hydrochloric acid and potassium hydroxide14 11Determination of sulfide15 12Photometric determination of manganese15 13Determination of main constituents16 13.1Principle 16 13.2Decomposition with sodium peroxide16 13.3Precipitation
33、and determination of silica Polyethylene oxide method (reference method)17 13.4Precipitation and determination of silica Double evaporation method (alternative method)19 13.5Decomposition with hydrochloric acid and ammonium chloride and precipitation of silica (alternative method)19 13.6Determinatio
34、n of pure silica20 13.7Decomposition of the evaporation residue20 13.8Determination of soluble silica20 13.9Total silica21 13.10Determination of iron (III) oxide21 13.11Determination of aluminium oxide21 13.12Determination of calcium oxide by EGTA (reference method)22 13.13Determination of magnesium
35、 oxide by DCTA (reference method)22 13.14Determination of calcium oxide by EDTA (alternative method)23 13.15Determination of magnesium oxide by EDTA (alternative method)23 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 196-2:1994 BSI 03-
36、19993 13.16Comments on the visual observation of the titrations for the determinations of calcium oxide and magnesium oxide24 Figure 1 Example of apparatus for determination of sulfide23 Figure 2 Schematic diagram for analysis of the main constituents23 Figure ND.1 Fusion mould23 Figure NF.1 Apparat
37、us for TOC determination by wet oxidation23 Figure NF.2 Apparatus for TOC determination by furnace oxidation23 Figure NF.3 Principle flow sheet of automatic TOC determination method23 Table 1 Concentrations of manganese standard solutions23 Table 2 Composition of the compensation solutions for a vol
38、ume of 500 ml23 Table 3 Composition of the silica calibration solutions and their silica content23 Table ND.1 Ignition conditions for pure standards23 Table ND 2 Maximum allowable differential detection limits23 Table ND.3 Mass of ingredients to be used for single monitor bead23 Table ND.4 Mass of i
39、ngredients to be used for “high and low” monitor beads23 Table ND.5 Calibration standards: mass of ingredients required for each fusion23 Table ND.6 Composition of calibration standards23 Table ND.7 Composition of beads for determination of !-correction23 Table ND.8 Precision values for SiO2 and CaO
40、23 Table ND.9 Multipliers for precision values for Al2O3, Fe2O3, MgO, K2O and SO323 Table ND.10 Composition of cements used in precision experiments23 Table ND.11 Comparison of precision values for CERILH interlaboratory test sample (XP5)23 Table ND.12 Accuracy checks against wet analysis figures23
41、Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 196-2:1994 BSI 03-19995 1 Scope This European Standard describes the proced
42、ures for the chemical analysis of cement. The standard describes the reference procedures and, in certain cases, an alternative method which can be considered as giving equivalent results. If other methods are used it is necessary to show that they give results equivalent to those given by the refer
43、ence methods. In the case of a dispute, only the reference procedures are used. This standard applies to cements, and also to their constituent materials such as clinker and blastfurnace slag. Standard specifications state which methods are to be used. 2 Normative references This European Standard i
44、ncorporates by dated or undated reference, 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
45、European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 196-7, Methods of testing cement Methods of taking and preparing samples of cement. ISO 3534:1977, Statistics Vocabulary and symbols. 3 Genera
46、l requirements for testing 3.1 Number of tests The number of tests for the various determinations (clauses 7 to 13) is fixed at two (see also 3.3). 3.2 Repeatability and reproducibility The standard deviation of repeatability gives the closeness of agreement between successive results obtained with
47、the same method on identical material tested under the same conditions (same operator, same apparatus, same laboratory and short time interval)1). The standard deviation of reproducibility gives the closeness of agreement between individual results obtained with the same method on identical material
48、 but tested under different conditions (different operators, different apparatus, different laboratories and/or different times)1). The standard deviations of repeatability and reproducibility are expressed in absolute %2). 3.3 Expression of masses, volumes, factors and results Express masses in gra
49、ms to the nearest 0,0001 g and volumes from the burette in millilitres to the nearest 0,05 ml. Express the factors of solutions, given by the mean of three determinations, to three decimal places. Express the results of the tests, given by the mean of two determinations, as a percentage, generally to two decimal places. If the difference between two determinations is more than twice the repeatability standard deviation, repeat the test and take the mean of the two closest values. 3.4 Igni