Bsi bs en 15743 2010 + a1 2015

BS EN 15743 2010 ICS 91 100 10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Supersulfated cement — Composition, specifications and conformity criteria BS EN[.]

Amendments/corrigenda issued since publication

This British Standard was

published under the authority

of the Standards Policy and

by 

The UK participation in its preparation was entrusted by Technical Committee B/516, Cement and lime, to Subcommittee B/516/6, Cementspecifications

A list of organizations represented on this committee can be obtained on request

EUROPÄISCHE NORM April 2015

English Version

Supersulfated cement - Composition, specifications and

conformity criteria

Ciment sursulfaté - Composition, spécifications et critères

de conformité Sulfathüttenzement - Zusammensetzung, Anforderungen und Konformitätskriterien

This European Standard was approved by CEN on 11 December 2009 and includes Amendment 1 approved by CEN on 24 November

2014

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-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 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, Greece, 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

C O M IT É E U R OP É E N D E N O RM A LIS A T IO N EURO PÄ ISC HES KOM ITE E FÜR NORM UNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref No EN 15743:2010+A1:2015 E

Contents Page

Foreword 4

Introduction 5

1 Scope 6

2 Normative references 6

3 Terms and definitions 6

4 Supersulfated cement 8

5 Constituents 8

5.1 Main constituents 8

5.1.1 Granulated blastfurnace slag (S) 8

5.1.2 Calcium sulfate (Cs) 8

5.2 Additional constituents 8

5.2.1 Portland cement clinker (K) 8

5.2.2 Other additional constituents (A) 8

5.3 Additives 9

6 Composition and notation 9

7 Mechanical, physical, chemical and durability requirements 10

7.1 Mechanical requirements 10

7.1.1 Standard strength 10

7.1.2 Early strength 10

7.2 Physical requirements 11

7.2.1 Initial setting time 11

7.2.2 Soundness 11

7.2.3 Heat of hydration 11

7.3 Chemical requirements 11

7.4 Durability requirements 11

7.4.1 General 11

7.4.2 Sulfate resistance 12

7.5 Dangerous substances 12

8 Standard designation 12

9 Conformity criteria 12

9.1 General requirements 12

9.2 Conformity criteria for mechanical, physical and chemical properties and evaluation procedure 14

9.2.1 General 14

9.2.2 Statistical conformity criteria 14

9.2.3 Single result conformity criteria 16

9.3 Conformity criteria for cement composition 17

9.4 Conformity criteria for properties of the cement constituents 17

Annex A (informative) Precautions related to the use of supersulfated cement 18

A.1 Blending with other binders 18

A.2 Use of additions in concrete 18

A.3 Effects of weather, striking and curing 18

A.4 Heat treatment 18

Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation 19

Contents Page

Foreword 4

Introduction 5

1 Scope 6

2 Normative references 6

3 Terms and definitions 6

4 Supersulfated cement 8

5 Constituents 8

5.1 Main constituents 8

5.1.1 Granulated blastfurnace slag (S) 8

5.1.2 Calcium sulfate (Cs) 8

5.2 Additional constituents 8

5.2.1 Portland cement clinker (K) 8

5.2.2 Other additional constituents (A) 8

5.3 Additives 9

6 Composition and notation 9

7 Mechanical, physical, chemical and durability requirements 10

7.1 Mechanical requirements 10

7.1.1 Standard strength 10

7.1.2 Early strength 10

7.2 Physical requirements 11

7.2.1 Initial setting time 11

7.2.2 Soundness 11

7.2.3 Heat of hydration 11

7.3 Chemical requirements 11

7.4 Durability requirements 11

7.4.1 General 11

7.4.2 Sulfate resistance 12

7.5 Dangerous substances 12

8 Standard designation 12

9 Conformity criteria 12

9.1 General requirements 12

9.2 Conformity criteria for mechanical, physical and chemical properties and evaluation procedure 14

9.2.1 General 14

9.2.2 Statistical conformity criteria 14

9.2.3 Single result conformity criteria 16

9.3 Conformity criteria for cement composition 17

9.4 Conformity criteria for properties of the cement constituents 17

Annex A (informative) Precautions related to the use of supersulfated cement 18

A.1 Blending with other binders 18

A.2 Use of additions in concrete 18

A.3 Effects of weather, striking and curing 18

A.4 Heat treatment 18

Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation 19

ZA.1 Scope and relevant characteristics 19

ZA.2 Procedure for AVCP of supersulfated cements 21

ZA.2.1 System of AVCP 21

ZA.2.2 Declaration of performance (DoP) 23

ZA.2.2.1 General 23

ZA.2.2.2 Content 23

ZA.2.2.3 Example of DoP 24

ZA.3 CE marking and labelling 25" Bibliography 27

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 includes Amendment 1, approved by CEN on 2014-11-24

This document supersedes EN 15743:2010

The start and finish of text introduced or altered by amendment is indicated in the text by tags ! "

!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 the EU Construction Products Regulation

For relationship with the EU Regulation concerning the CPR, 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 assessment and verification of constancy of performance (AVCP) 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

Foreword

This document (EN 15743:2010+A1:2015) 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 October 2015, and conflicting national standards shall be withdrawn at

the latest by January 2017

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 includes Amendment 1, approved by CEN on 2014-11-24

This document supersedes EN 15743:2010

The start and finish of text introduced or altered by amendment is indicated in the text by tags ! "

!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 the EU Construction Products

Regulation

For relationship with the EU Regulation concerning the CPR, 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 assessment and verification of constancy of performance (AVCP) 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

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

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 197-2:2014", 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

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 197-2:2014", 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

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 P k, 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 P k 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

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

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

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

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:

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

Composition (Percentage by massa)

Main Constituents Additional Constituents

Granulated blastfurnace slag Calcium sulfate

Portland cement clinker

Other

a The values in the table refer to the sum of the main and additional constituents

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

mm

Early strength Standard strength

Table 1 — Supersulfated cement

Composition (Percentage by massa)

Main Constituents Additional Constituents

Granulated blastfurnace slag Calcium sulfate

Portland cement

clinker

Other

a The values in the table refer to the sum of the main and additional constituents

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

mm

Early strength Standard strength

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

water-Table 3 — Chemical requirements given as characteristic values

Property Test reference Requirementsa

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

!

7.5 Dangerous substances

National regulations on dangerous substances may require verification and declaration on release, and sometimes content, when construction products covered by this standard are placed on those markets

In the absence of European harmonized test methods, verification and declaration on release/content should

be done taking into account national provisions in the place of use

NOTE An informative database covering European and national provisions on dangerous substances is available at the Construction web site on EUROPA accessed through: http://ec.europa.eu/enterprise/construction/cpd-ds/

"

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:

!Alternative test methods could be used provided that they have been validated in accordance with the appropriate provisions in the cited standards of the reference test methods In the event of a dispute, only the reference methods are used

NOTE 1 This standard does not deal with acceptance inspection at delivery

NOTE 2 For certification of constancy of performance by a notified body, conformity of cement with this standard is evaluated in accordance with EN 197-2

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

!

7.5 Dangerous substances

National regulations on dangerous substances may require verification and declaration on release, and

sometimes content, when construction products covered by this standard are placed on those markets

In the absence of European harmonized test methods, verification and declaration on release/content should

be done taking into account national provisions in the place of use

NOTE An informative database covering European and national provisions on dangerous substances is available at

the Construction web site on EUROPA accessed through: http://ec.europa.eu/enterprise/construction/cpd-ds/

"

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

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

!Alternative test methods could be used provided that they have been validated in accordance with the

appropriate provisions in the cited standards of the reference test methods In the event of a dispute, only the

reference methods are used

NOTE 1 This standard does not deal with acceptance inspection at delivery

NOTE 2 For certification of constancy of performance by a notified body, conformity of cement with this standard is

evaluated in accordance with EN 197-2

The compliance of the supersulfated cements with the requirements of this European Standard and with the stated values (including classes) shall be demonstrated by:

— determination of the product type,

— factory production control by the manufacturer, including product assessment."

Table 4 — Properties, test methods and minimum testing frequency for the autocontrol testing by the

manufacturer, and the statistical assessment procedure

Property Test methodab

Autocontrol testing Minimum testing frequency Statistical assessment procedure Routine

situation

Initial period for a new type

of cement

Inspection by Variables e Attributes

Early strength

Soundness

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 method of assessment may be decided on a case by case basis

f If the number of samples is at least one per week during the control period, the assessment may be made by variables

g When none of the test results within a period of 12 months exceeds 170 J/g, the frequency may be reduced to two per year

9.2 Conformity criteria for mechanical, physical and chemical properties and evaluation procedure

9.2.1 General

Conformity of cement with the requirements for mechanical, physical and chemical properties in this standard

is assumed if the conformity criteria specified in 9.2.2 and 9.2.3 are met Conformity shall be evaluated on the basis of continual sampling using spot samples taken at the point of release and on the basis of the test results obtained on all autocontrol samples taken during the control period

9.2.2 Statistical conformity criteria

9.2.2.1 General

Conformity shall be formulated in terms of a statistical criterion based on:

— the required characteristic values for mechanical, physical and chemical properties as given in 7.1, 7.2, and 7.3 of this standard;

— the percentile Pk, on which the specified characteristic value is based, as given in Table 5;

— the allowable probability of acceptance CR, as given in Table 5

Table 5 — Required values Pk and CR

Mechanical requirements:

Physical and chemical requirements

Early and standard strength (Lower limit)

Standard strength (Upper limit)

sample size (number of test results), the better the approximation The selected probability of acceptance CR controls the

degree of approximation by the sampling plan

Conformity with the requirements of this standard shall be verified either by variables or by attributes, as described in 9.2.2.2 and 9.2.2.3 as specified in Table 4

The control period shall be 12 months

9.2.2.2 Inspection by variables

For this inspection the test results are assumed to be normally distributed

Conformity is verified when Equation(s) (1) and (2), as relevant, are satisfied:

A