Supersulfated cement - Composition, specifications and conformity criteria

This European Standard defines and gives the specifications of supersulfated cement and its constituents. The definition of supersulfated cement includes the proportions in which the constituents are to be combined to produce products in accordance with this standard. The definition also includes requirements the constituents have to meet and the mechanical, physical, chemical including heat of hydration requirements. This standard also states the conformity criteria and the related rules.
NOTE 1   In addition to the specified requirements, an exchange of additional information between the cement manufacturer and user may be helpful. The procedures for such an exchange are not within the scope of this standard but should be dealt with in accordance with national standards or regulations or may be agreed between the parties concerned.
NOTE 2     The word "cement" in this standard is used to refer only to supersulfated cement unless otherwise specified.

Sulfathüttenzement - Zusammensetzung, Anforderungen und Konformitätskriterien

Diese Europäische Norm definiert Sulfathüttenzement und seine Bestandteile und enthält entsprechende Festlegungen. Diese umfassen die Mischungsverhältnisse, in denen die ein¬zelnen Bestandteile zu kombinieren sind, um Sulfathüttenzement nach dieser Norm herzustellen. Sie umfassen auch Anforderungen, die die Bestandteile erfüllen müssen, sowie mechanische, physikali¬sche und chemische Anforderungen, zu denen auch Anforderungen an die Hydratationswärme gehören. Diese Norm enthält darüber hinaus die Konformitätskriterien und die dafür geltenden Regeln.
ANMERKUNG 1   Zusätzlich zu den festgelegten Anforderungen kann ein Austausch zusätzlicher Informationen zwi¬schen dem Zementhersteller und dem Anwender hilfreich sein. Die Vorgehensweise für einen solchen Austausch ist nicht Gegenstand der vorliegenden Norm, sondern ist in Übereinstimmung mit den nationalen Normen oder Vorschrif¬ten festzulegen oder kann zwischen den Beteiligten vereinbart werden.
ANMERKUNG 2   Sofern nicht anders festgelegt, bezieht sich das Wort „Zement“ in dieser Norm nur auf Sulfathütten¬zement.

Ciment sursulfaté - Composition, spécifications et critères de conformité

La présente Norme européenne définit et fournit les spécifications du ciment sursulfaté et de ses constituants.
La définition du ciment sursulfaté inclut les proportions dans lesquelles les constituants doivent être associés
pour produire des produits conformes à la présente Norme. La définition comporte également des exigences
que les constituants doivent satisfaire ainsi que les exigences mécaniques, physiques, chimiques et de
chaleur d’hydratation. La présente Norme établit également les critères de conformité et les règles
correspondantes.
NOTE 1 En plus des exigences spécifiées, il peut s’avérer utile que le fabricant et l’utilisateur du ciment échangent des
informations complémentaires. Les procédures afférentes à un tel échange ne sont pas du domaine d’application de la
présente Norme, mais il convient de les traiter conformément aux normes ou réglementations nationales ; elles peuvent
également faire l’objet d’un accord entre les parties concernées.
NOTE 2 Sauf spécification contraire, le terme «ciment» est utilisé dans la présente Norme uniquement pour qualifier
les ciments sursulfatés.

Supersulfatni cement - Sestava, zahteve in merila skladnosti za običajne cemente

Ta evropski standard opredeljuje in podaja specifikacije supersulfatnega cementa in njegovih sestavin. Definicija supersulfatnega cementa vključuje deleže za kombiniranje sestavin, da nastanejo proizvodi v skladu s tem standardom. Definicija vključuje tudi zahteve, ki jim morajo sestavine ustrezati, in mehanske, fizikalne in kemične zahteve, vključno s toploto hidratacije. Ta standard navaja tudi merila za skladnost in sorodna pravila.

General Information

Status
Withdrawn
Publication Date
19-Jan-2010
Withdrawal Date
07-Apr-2015
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
08-Apr-2015

RELATIONS

Buy Standard

Standard
EN 15743:2010
English language
24 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sulfathüttenzement - Zusammensetzung, Anforderungen und KonformitätskriterienCiment sursulfaté - Composition, spécifications et critères de conformitéSupersulfated cement - Composition, specifications and conformity criteria91.100.10Cement. Mavec. Apno. MaltaCement. Gypsum. Lime. MortarICS:Ta slovenski standard je istoveten z:EN 15743:2010SIST EN 15743:2010en,fr,de01-marec-2010SIST EN 15743:2010SLOVENSKI

STANDARD
SIST EN 15743:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15743
January 2010 ICS 91.100.10 English Version
Supersulfated cement - Composition, specifications and conformity criteria
Ciment sulfaté - Composition, spécifications et critères de conformité

Sulfathüttenzement - Zusammensetzung, Anforderungen und Konformitätskriterien This European Standard was approved by CEN on 11 December 2009.

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 on application to the CEN 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 language and notified to the CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15743:2010: ESIST EN 15743:2010

EN 15743:2010 (E) 2 Contents Page Foreword ..............................................................................................................................................................4Introduction .........................................................................................................................................................51Scope ......................................................................................................................................................62Normative references ............................................................................................................................63Terms and definitions ...........................................................................................................................64Supersulfated cement ...........................................................................................................................85Constituents ...........................................................................................................................................85.1Main constituents ..................................................................................................................................85.1.1Granulated blastfurnace slag (S) .........................................................................................................85.1.2Calcium sulfate (Cs) ..............................................................................................................................85.2Additional constituents .........................................................................................................................85.2.1Portland cement clinker (K) ..................................................................................................................85.2.2Other additional constituents (A) .........................................................................................................85.3Additives .................................................................................................................................................96Composition and notation ....................................................................................................................97Mechanical, physical, chemical and durability requirements ........................................................ 107.1Mechanical requirements ................................................................................................................... 107.1.1Standard strength ............................................................................................................................... 107.1.2Early strength ...................................................................................................................................... 107.2Physical requirements ....................................................................................................................... 107.2.1Initial setting time ............................................................................................................................... 107.2.2Soundness ........................................................................................................................................... 107.2.3Heat of hydration ................................................................................................................................ 107.3Chemical requirements ...................................................................................................................... 117.4Durability requirements ..................................................................................................................... 117.4.1General ................................................................................................................................................. 117.4.2Sulfate resistance ............................................................................................................................... 118Standard designation ......................................................................................................................... 119Conformity criteria .............................................................................................................................. 129.1General requirements ......................................................................................................................... 129.2Conformity criteria for mechanical, physical and chemical properties and evaluation procedure ............................................................................................................................................ 129.2.1General ................................................................................................................................................. 129.2.2Statistical conformity criteria ............................................................................................................ 139.2.3Single result conformity criteria ........................................................................................................ 159.3Conformity criteria for cement composition .................................................................................... 159.4Conformity criteria for properties of the cement constituents ...................................................... 16Annex A (informative)

Precautions related to the use of supersulfated cement ...................................... 17A.1Blending with other binders .............................................................................................................. 17A.2Use of additions in concrete .............................................................................................................. 17A.3Effects of weather, striking and curing ............................................................................................ 17A.4Heat treatment ..................................................................................................................................... 17Annex ZA (informative)

Clauses of this European Standard addressing the provisions of the EU Construction Products Directive ....................................................................................................... 18ZA.1Scope and relevant characteristics .................................................................................................. 18ZA.2Procedure for attestation of conformity of supersulfated cements .............................................. 20ZA.2.1System of attestation of conformity ................................................................................................. 20ZA.2.2EC Certificate and Declaration of conformity .................................................................................. 21ZA.3CE marking and labelling ................................................................................................................... 21SIST EN 15743:2010

EN 15743:2010 (E)

3 ZA.3.1General ................................................................................................................................................. 21ZA.3.2Bagged cement .................................................................................................................................... 22ZA.3.3Bulk cement ......................................................................................................................................... 23Bibliography ...................................................................................................................................................... 24SIST EN 15743:2010

EN 15743:2010 (E) 4 Foreword This document (EN 15743:2010) has been prepared by Technical Committee CEN/TC 51 “Cement and building limes”, the secretariat of which is held by NBN. 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 July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. Attention is drawn to the possibility that some of 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 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, which is an integral part of this document. Annex A is informative. This European Standard sets out requirements for the composition and specifications of supersulfated cement. The scheme for the evaluation of conformity of supersulfated cement is that specified in EN 197-2. The requirements in this European Standard are based on the results of tests on cement in accordance with parts 1, 2, 3, 7, 8 and 9 of EN 196, Methods of testing cement.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

SIST EN 15743:2010
EN 15743:2010 (E)

5 Introduction The basis for this European Standard has been the national standards already existing in Europe. Supersulfated cement was originally standardised in several European countries, Belgium, France, Germany, Netherlands and the United Kingdom, and has been used in concrete for foundations and massive structures. The demand for quick setting cements enabling early formwork removal caused the manufacturing of supersulfated cements to be superseded by those based on Portland cement clinker. Standards were either abandoned, as in France, or kept in the catalogue of standards but never used, as in the United Kingdom.

In discharging the mandate given to CEN, Technical Committee TC 51 considered the large number of different cements involved. It was decided to separate the "common cements", where the hardening mainly depends on the hydration of calcium silicates and setting these out in EN 197-1, from "special cements", i.e. those with additional or special properties.

Supersulfated cement hardening depends on granulated blastfurnace slag activation by calcium sulfate. A lower heat of hydration than for Portland cement clinker results in lower early compressive strength than common cements and a significantly lower early heat of hydration. In addition, it produces concrete which has resistance to chemically aggressive environments, such as sulfates. Ongoing developments in material technology as well as in production technology again open the option to produce supersulfated cement fulfilling the demands and requirements of the market. As the principles in hydration differ from that of "common cements" covered by EN 197-1, CEN Technical Committee TC 51 decided to elaborate a separate standard for supersulfated cement. The rate of hardening and lower early strength require that additional precautions are considered when using supersulfated cements to ensure adequate concrete curing. SIST EN 15743:2010

EN 15743:2010 (E) 6

1 Scope This European Standard defines and gives the specifications of supersulfated cement and its constituents. The definition of supersulfated cement includes the proportions in which the constituents are to be combined to produce products in accordance with this standard. The definition also includes requirements the constituents have to meet and the mechanical, physical, chemical including heat of hydration requirements. This standard also states the conformity criteria and the related rules.

NOTE 1 In addition to the specified requirements, an exchange of additional information between the cement manufacturer and user may be helpful. The procedures for such an exchange are not within the scope of this standard but should be dealt with in accordance with national standards or regulations or may be agreed between the parties concerned. NOTE 2

The word "cement" in this standard is used to refer only to supersulfated cement unless otherwise specified. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the 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 testing cement

Part 3: Determination of setting times 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: Heat of 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 197-2:2000, Cement

Part 2: Conformity evaluation EN 459-1, Building lime

Part 1: Definitions, specifications and conformity criteria EN 934 (all parts), Admixtures for concrete, mortar and grout

3 Terms and definitions For the purposes of this document, the following terms and definitions apply.

3.1 heat of hydration quantity of heat generated by cement hydration within a given period of time

3.2 main constituents granulated blastfurnace slag and calcium sulfate in a proportion exceeding 90 % by mass related to the sum of all main and additional constituents

SIST EN 15743:2010
EN 15743:2010 (E)
7 3.3 additional constituents

Portland cement clinker (K) and other additional constituents (A) used in a proportion not exceeding a total of 10 % by mass related to the sum of all main and additional constituents

NOTE Other additional constituents are specially selected inorganic materials of natural origin and/or derived from specified industrial processes. 3.4 strength class of supersulfated cement class of compressive strength

3.5 control period period of production and dispatch identified for the evaluation of the autocontrol test results

3.6 characteristic value value of a required property outside of which lies a specified percentage, the percentile Pk, of all the values of the population

3.7 specified characteristic value characteristic value of a mechanical, physical or chemical property which in the case of an upper limit is not to be exceeded or in the case of a lower limit is, as a minimum, to be reached

3.8 single result limit value value of a mechanical, physical or chemical property which – for any single test result – in the case of an upper limit is not to be exceeded or in the case of a lower limit is, as a minimum, to be reached

3.9 allowable probability of acceptance CR for a given sampling plan, allowed probability of acceptance of cement with a characteristic value outside the specified characteristic value

3.10 sampling plan specific plan which states the (statistical) sample size(s) to be used, the percentile Pk and the allowable probability of acceptance CR

3.11 spot sample sample taken at the same time and from one and the same place, relating to the intended tests

NOTE 1 It may be obtained by combining one or more immediately consecutive increments. NOTE 2 See EN 196-7.

3.12 autocontrol testing continual testing by manufacturer of cement spot samples taken at the point(s) of release from the factory/depot. SIST EN 15743:2010

EN 15743:2010 (E) 8 4 Supersulfated cement Supersulfated 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.

Supersulfated cements consist mainly of granulated blastfurnace slag and calcium sulfate. They are statistically homogeneous in composition resulting from quality assured production and material handling processes. The link between these production and material handling processes and the conformity of cement to this standard is defined in EN 197-2.

In supersulfated cement, in contrast to common cements according to EN 197-1, ground granulated blastfurnace slag is mainly activated by calcium sulfate. In order to accelerate the activation and early hydration of slag, additional constituents may be added. 5 Constituents 5.1 Main constituents 5.1.1 Granulated blastfurnace slag (S) Granulated blastfurnace slag is made by rapid cooling of a slag melt of suitable composition, as obtained by smelting iron ore in a blastfurnace and consists of at least two-thirds by mass of glassy slag and possesses hydraulic properties when suitably activated.

Granulated blastfurnace slag shall consist of at least two-thirds by mass of the sum of calcium oxide (CaO), magnesium oxide (MgO) and silicon dioxide (SiO2). The remainder contains aluminium oxide (Al2O3) together with small amounts of other compounds. The ratio by mass (CaO + MgO)/(SiO2) shall exceed 1,0.

NOTE Rapid cooling includes quenching in water (granulation) and projecting through water and air (pelletisation). 5.1.2 Calcium sulfate (Cs) Calcium sulfate can be gypsum calcium sulfate dihydrate (CaSO4.2H2O), hemihydrate (CaSO4.½H2O), or anhydrite (anhydrous calcium sulfate, CaSO4) or any mixture of them. Gypsum and anhydrite are found naturally. Calcium sulfate is also available as a by-product of certain industrial processes.

5.2 Additional constituents 5.2.1 Portland cement clinker (K) Portland cement clinker is made by sintering a precisely specified mixture of raw materials (raw meal, paste or slurry) containing elements, usually expressed as oxides, CaO, SiO2, Al2O3, Fe2O3 and small quantities of other materials. The raw meal, paste or slurry is finely divided, intimately mixed and therefore homogeneous.

Portland cement clinker is a hydraulic material which shall consist of at least two-thirds by mass of calcium silicates (3CaO.SiO2 and 2CaO.SiO2), the remainder consisting of aluminium and iron containing clinker phases and other compounds. The ratio by mass (CaO)/(SiO2) shall be not less than 2,0. The content of magnesium oxide (MgO) shall not exceed 5,0 % by mass.

5.2.2 Other additional constituents (A) Other additional constituents are specially selected, inorganic mineral materials of natural origin, inorganic mineral materials derived from the cement production process, excluding Portland cement clinker according to 5.2.1, and/or inorganic mineral materials derived from the production process for air lime or natural hydraulic lime to EN 459-1.

SIST EN 15743:2010
EN 15743:2010 (E)

9 Other additional constituents, after appropriate preparation and on account of their particle size distribution, improve the physical properties of the cement (such as workability or water retention). They can be inert or have slightly hydraulic, latent hydraulic or pozzolanic properties. However, no requirements are set for them in this respect.

Other additional constituents shall be correctly prepared, i.e. selected, homogenised, dried and comminuted depending on their state of production or delivery. They shall not increase the water demand of the cement appreciably, impair the resistance of the concrete or mortar to deterioration in any way or reduce the corrosion protection of the reinforcement.

NOTE Information on the other additional constituents in the cement should be available from the manufacturer on request. 5.3 Additives Additives for the purpose of this standard are constituents not covered in 5.1 to 5.2 which are added to improve the manufacture or the properties of the cement.

The total quantity of additives shall not exceed 1,0 % by mass of the cement (except for pigments). The quantity of organic additives on a dry basis shall not exceed 0,2 % by mass of the cement without the higher value being declared.

These additives shall not promote corrosion of the reinforcement or impair the properties of the cement or of the concrete or mortar made from the cement.

When admixtures for concrete, mortar or grouts conforming to the EN 934 series are used in cement the standard notation of the admixture shall be declared on bags or delivery documents. 6 Composition and notation The notation of supersulfated cement is:

 SSC
Supersulfated cement.
The composition of supersulfated cement shall be in accordance with Table 1.

NOTE The requirements for the composition refer to the sum of all main and additional constituents. The final cement should be understood as the main and additional constituents plus the necessary additives.

Table 1 — Supersulfated cement
Type Notation Composition (Percentage by massa)

Main Constituents Additional Constituents Granulated blastfurnace slag Calcium sulfate

Portland cement clinker
Other

S Cs K A SSC Supersulfated cement SSC ≥ 75 5 ≤ Cs ≤ 20 0 < K ≤ 5 0 ≤ A ≤ 5 a The values in the table refer to the sum of the main and additional constituents.

SIST EN 15743:2010

EN 15743:2010 (E) 10 7 Mechanical, physical, chemical and durability requirements 7.1 Mechanical requirements 7.1.1 Standard strength The standard strength of supersulfated cement is the compressive strength determined in accordance with EN 196-1 at 28 days and shall conform to the requirements in Table 2.

Three classes of standard strength are included: class 32,5, class 42,5 and class 52,5 (see Table 2).

7.1.2 Early strength The early strength of supersulfated cement is the compressive strength determined in accordance with EN 196-1 at either two days or seven days and shall conform to the requirements in Table 2.

Two classes of early strength are included for each class of standard strength, a class with low early strength, indicated by L and a class with ordinary early strength, indicated by N (see Table 2).

Table 2 — Mechanical and physical requirements given as characteristic values Strength class Compressive strength MPa Initial setting time

min Soundness (expansion)

mm Early strength Standard strength 2 days 7 days 28 days 32,5 L – ≥ 12,0 ≥ 32,5 ≤ 52,5 ≥ 75

32,5 N – ≥ 16,0 ≤ 10 42,5 L – ≥ 16,0 ≥ 42,5 ≤ 62,5 ≥ 60 42,5 N ≥ 10,0 – 52,5 L ≥ 10,0 – ≥ 52,5 – ≥ 45 52,5 N ≥ 20,0 – 7.2 Physical requirements 7.2.1 Initial setting time The initial setting time, determined in accordance with EN 196-3, shall conform to the requirements in Table 2.

7.2.2 Soundness The expansion, determined in accordance with EN 196-3, shall conform to the requirement in Table 2.

7.2.3 Heat of hydration The heat of hydration, determined in accordance with EN 196-8 at seven days or in accordance with EN 196-9 at 41 h, shall not exceed the characteristic value of 220 J/g.

Therefore SSC is classified as a very low heat cement. NOTE A pre-normative research project demonstrated that results obtained from tests in accordance with EN 196-8 at seven days and in accordance with EN 196-9 at 41 h, were equivalent. However, in the event of dispute between laboratories, the method should be agreed upon by the parties involved. SIST EN 15743:2010

EN 15743:2010 (E)

11 7.3 Chemical requirements The properties of the supersulfated cement shall conform to the requirements listed in Table 3 when tested in accordance with the standard referred to in that table.

NOTE According to Clause 47 of Annex 17 of the REACH Regulation (EC) Nr 1907/2006, the content of water-soluble hexavalent chromium is limited (see EN 196-10).

Table 3 — Chemical requirements given as characteristic values

Property Test reference Requirementsa Loss on ignition EN 196-2 ≤ 5,0 % Insoluble residue

EN 196-2b ≤ 5,0 % Sulfate content (SO3) EN 196-2 ≥ 5,0 % ≤ 12,0 % Chloride content EN 196-2 ≤ 0,10 %c a Requirements are given as percentage by mass of the final cement. b Determination of residue insoluble in hydrochloric acid and sodium carbonate. c Supersulfated cement may contain more than 0,10 % chloride but in that case the maximum chloride content shall be stated on the packaging and/or the delivery note.

7.4 Durability requirements 7.4.1 General In many applications, particularly in severe environmental conditions, the choice of cement has an influence on the durability of concrete, mortar and grouts, e.g. frost resistance, chemical resistance and protection of reinforcement.

The choice of cement, as regards type and strength class for different applications and exposure classes shall follow the appropriate standards and/or regulations for concrete, mortar or grouts valid in the place of use.

7.4.2 Sulfate resistance Supersulfated cement conforming to the requirements of this standard is to be considered as sulfate resisting.

NOTE Many countries apply further restrictions to the production of concrete to be used in a sulfate environment, such as minimum cement content and/or maximum water/cement ratio depending on the type and intensity of the sulfate conditions. 8 Standard designation Supersulfated cement shall be identified by at least the notation as specified in Clause 6 and the figures 32,5, 42,5 or 52,5 indicating the standard strength class and the letter L or N indicating the early strength class (see 7.1).

EXAMPLE A supersulfated cement of strength class 42,5 N
shall be identified as follows:
Supersulfated cement EN 15743 – SSC 42,5 N SIST EN 15743:2010

EN 15743:2010 (E) 12 9 Conformity criteria 9.1 General requirements Conformity of supersulfated cement to this standard shall be continually evaluated on the basis of testing of spot samples. The properties, test methods and the minimum testing frequencies for the autocontrol testing by the manufacturer are specified in Table 4. Concerning testing frequencies for cement not being dispatched continuously, and other details, see EN 197-2.

For certification of conformity by an approved certification body, conformity of cement with this standard shall be evaluated in accordance with EN 197-2.

NOTE This standard does not deal with acceptance inspection at delivery. Table 4 — Properties, test methods and minimum testing frequency for the autocontrol testing by the manufacturer, and the statistical assessment procedure Property Test methoda b Autocontrol testingMinimum testing frequencyStatistical assessment procedureRoutine situation

Initial period for a new type of cement Inspection by Variablese Attributes 1 3 4567Early strength Standard strength EN 196-1 2/week 4/week x

Initial setting time EN 196-3 2/week 4/week
xf Soundness (expansion) EN 196-3 1/week 4/week
Loss on ignition EN 196-2 2/monthc 1/week
xf Insoluble residue EN 196-2 2/monthc 1/week
xf Sulfate content EN 196-2 2/week 4/week
xf Chloride content EN 196-2 2/monthc 1/week
xf Heat of hydration EN 196-8/EN 196-9g 1/month 1/week
xf Composition –d 1/month 1/week

a Where allowed in the relevant part of EN 196, other methods than those indicated may be used provided they give results correlated and equivalent to those obtained with the reference method. b

The methods used to take and prepare samples shall be in accordance with EN 196-7. c When none of the test results within a period of 12 months exceeds 50 % of the characteristic value, the frequency may be reduced to one per month. d Appropriate test method chosen by the manufacturer. e If the data are not normally distributed then the

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.