SIST EN 413-1:2004
(Main)Masonry cement - Part 1: Composition, specifications and conformity criteria
Masonry cement - Part 1: Composition, specifications and conformity criteria
This European Standard gives the definition and composition of masonry cements as commonly used in Europe for the production of mortar for bricklaying and blocklaying and for rendering and plastering. It includes physical, mechanical and chemical requirements and defines strength classes. prEN 413-1 also states the conformity criteria and the related rules. Necessary durability requirements are also given.
NOTE For normal applications the information given in prEN 413-1, in EN 998-1 and in EN 998-2 is generally sufficient. However, in special cases, an exchange of additional information between the masonry cement producer and user can be helpful. The details of such an exchange are not within the scope of prEN 413-1 but should be dealt with in accordance with national standards or other regulations or can be agreed between the parties concerned.
Putz- und Mauerbinder - Teil 1: Zusammensetzung, Anforderungen und Konformitätskriterien
Diese Europäische Norm legt die Definition und die Zusammensetzung von Putz- und Mauerbindern, die üblicherweise in Europa für Putz- und Mauerarbeiten verwendet werden, fest. Sie enthält mechanische, physikalische und chemische Anforderungen und definiert Festigkeitsklassen. Darüber hinaus enthält EN 413-1 die Konformitäts-kriterien und die damit verbundenen Regeln sowie notwendige Anforderungen an die Dauerhaftigkeit.
ANMERKUNG In der Regel sind die in EN 413-1, in EN 998-1 und in EN 998-2 enthaltenen Angaben für die übliche Anwendung ausreichend. In besonderen Fällen kann jedoch ein Austausch von zusätzlichen Informationen zwischen dem Hersteller von Putz- und Mauerbindern und dem Abnehmer hilfreich sein. Die Einzelheiten eines solchen Informationsaustauschs sind nicht Gegenstand von EN 413-1, sondern sie sind in Übereinstimmung mit den nationalen Normen oder mit anderen Regelungen festzulegen oder können zwischen den betreffenden Parteien vereinbart werden.
Ciment de maçonner - Partie 1: Composition, spécifications et criteres de conformité
La présente Norme européenne donne la définition et la composition des ciments a maçonner généralement utilisés en Europe pour la production de mortier destiné au montage de briques et de blocs, ainsi qu'aux enduits intérieurs et extérieurs. Elle inclut les exigences relatives a leurs propriétés physiques, mécaniques et chimiques, et définit les classes de résistance. L'EN 413-1 stipule également les criteres de conformité et les regles associées. Elle spécifie également les exigences de durabilité nécessaires.
NOTE Pour des applications normales, les informations données dans l'EN 413-1, l'EN 998-1 et l'EN 998-2 sont généralement suffisantes. Toutefois, dans des cas spéciaux, un échange d'informations supplémentaires entre le producteur de ciment a maçonner et l'utilisateur peut se révéler utile. Les détails d'un tel échange ne relevent pas du domaine d'application de l'EN 413-1, mais il convient de les traiter conformément aux normes nationales ou autres reglements nationaux ; ils peuvent également faire l'objet d'un accord entre les parties concernées.
Zidarski cement - 1. del: Sestava, zahteve in merila skladnosti
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Masonry cement - Part 1: Composition, specifications and conformity criteriaZidarski cement - 1. del: Sestava, zahteve in merila skladnostiCiment de maçonner - Partie 1: Composition, spécifications et criteres de conformitéPutz- und Mauerbinder - Teil 1: Zusammensetzung, Anforderungen und KonformitätskriterienTa slovenski standard je istoveten z:EN 413-1:2004SIST EN 413-1:2004en91.100.10ICS:SLOVENSKI
STANDARDSIST EN 413-1:200401-april-2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 413-1February 2004ICS 91.100.10Supersedes ENV 413-1:1994English versionMasonry cement - Part 1: Composition, specifications andconformity criteriaCiment de maçonnerie - Composition, spécifications etcritères de conformitéPutz- und Mauerbinder - Teil 1: Zusammensetzung,Anforderungen und KonformitätskriterienThis European Standard was approved by CEN on 10 December 2003.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 nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 413-1:2004 E
EN 413-1:2004 (E)2ContentspageForeword.3Introduction.51Scope.62Normative references.63Terms and definitions.74Notation.85Requirements.85.1General.85.2Constituents and composition.85.3Physical and mechanical requirements.95.3.1Fineness (sieve residue).95.3.2Initial setting time.95.3.3Final setting time.95.3.4Soundness.95.3.5Fresh mortar requirements.95.3.6Compressive strength.105.4Chemical requirements.105.5Durability requirements.116Standard designation.117Conformity criteria.117.1General requirements.117.2Conformity criteria for physical, mechanical and chemical properties andevaluation procedure.127.2.1General.127.2.2Statistical conformity criteria.127.2.3Single result conformity criteria.167.3Conformity criteria for masonry cement composition.17Annex A (informative) Water-soluble hexavalent chromium.18Annex ZA
(informative)
Clauses of this European Standard addressing the provisions ofthe EU Construction Products Directive.19
EN 413-1:2004 (E)3ForewordThis document (EN 413-1:2004) has been prepared by Technical Committee CEN/TC 51 "Cementand building limes", the secretariat of which is held by IBN.This European Standard shall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by August 2004, and conflicting national standards shallbe withdrawn at the latest by November 2005.This document supersedes ENV 413-1:1994.The European Standard, EN 413, “Masonry cement”, consists of the following Parts:Part 1: Composition, specifications and conformity criteria;Part 2: Test methods.This document has been prepared under a mandate given to CEN by the European Commission andthe 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 thisdocument.EN 413-1 has been prepared to provide a range of materials from which users of EN 998-1, EN 998-2and ENV 1996-1-1 (Eurocode 6) can select with confidence to achieve the level of strength anddurability required of masonry and rendering.The main changes from ENV 413-1:1994 are as follows:- organic additives that may be included shall not be more than 0,5 % (see Table 1);- the final setting time is an optional requirement if the initial setting time is less than 6 h (see 5.3.3);- the upper limit for water retention is removed (see Table 2);The requirements of this European Standard are, where appropriate, based on the results from tests onmasonry cement in accordance with EN 196 'Methods of testing cement'. Strength is measured on astandard mortar prepared in accordance with EN 196-1 with a fixed water/cement ratio and compactedusing the equipment described in EN 196-1 or EN 459-2. However, some additional tests have beenfound necessary and these tests are described in EN 413-2.CEN/TC 51 recognises the importance of workability (cohesivity at standard consistence) of mortarsprepared from masonry cements. A test method is available in CR 13933, and in which results of a testprogramme are also given. This test method was not found valid for standard requirement purposes dueto its lack of reproducibility, however it provides valuable information for the manufacturers and users onthe property in use of masonry cements.
EN 413-1:2004 (E)4The properties of bond and durability (resistance to frost and/or chemical attack) of mortars are veryimportant and appropriate mortar tests are being developed by CEN/TC 125, Masonry. In manyapplications, particularly in severe environmental conditions, the choice of the type/class of masonrycement from EN 413-1 can influence the durability of mortar, e.g. in respect of frost and chemicalresistance.Annex A is informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, Cyprus, CzechRepublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia,Spain, Sweden, Switzerland and United Kingdom.
EN 413-1:2004 (E)5IntroductionThe basis for this European Standard has been the national standards already existing in Europe.These national standards differ from each other; some of the differences relate to important principlesof definition and specification of properties and composition.CEN/TC 51 has not found it appropriate to prepare a European masonry cement standard which is acommon denominator of all existing national standards. Masonry cement should be defined andspecified precisely with sufficiently stringent requirements to satisfy those who are responsible for thedesign and construction of buildings and other structures for maximum safety and durability.CEN/TC 51 has, on the other hand, been aware that a precise and detailed formulation of a EuropeanStandard may render it more difficult to adopt the standard in the countries where the nationalstandards differ from it.CEN/TC 51 has made every effort to obtain a balance between an adequate and clear wording of thisstandard and the anticipated national difficulties of adoption.EN 413-1 is a carefully balanced compromise which has been thoroughly discussed, taking intoaccount the need to arrive at a usable standard.
EN 413-1:2004 (E)61 ScopeThis European Standard specifies the definition and composition of masonry cements as commonly usedin Europe for the production of mortar for bricklaying and blocklaying and for rendering and plastering. Itincludes physical, mechanical and chemical requirements and defines strength classes. EN 413-1 alsostates the conformity criteria and the related rules. Necessary durability requirements are also given.NOTEFor normal applications the information given in EN 413-1, in EN 998-1 and in EN 998-2 is generallysufficient. However, in special cases, an exchange of additional information between the masonry cementproducer and user can be helpful. The details of such an exchange are not within the scope of EN 413-1 butshould be dealt with in accordance with national standards or other regulations or can be agreed between theparties concerned.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text, and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions of anyof these publications apply to this European Standard only when incorporated in it by amendment orrevision. For undated references the latest edition of the publication referred to applies (includingamendments).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 time and soundness.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 196-211), Methods of testing cement — Part 21: Determination of the chloride, carbon dioxide andalkali content of cement.EN 197-1, Cement — Part 1: Composition, specification and conformity criteria for common cements.EN 197-2:2000, Cement — Part 2: Conformity evaluation.EN 413-2, Masonry cement — Part 2: Test methods.EN 459-1, Building lime - Part 1: Definitions, specifications and conformity criteria.EN 459-2: 2001, Building lime — Part 2: Test methods.EN 12878, Pigments for the colouring of building materials based on cement and/or lime - Specificationsand methods of test.
1 )
EN 196-21 is currently being incorporated in EN 196-2.
EN 413-1:2004 (E)73 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1masonry cementfactory made finely powdered hydraulic binder which relies essentially upon the presence of Portlandcement clinker to develop strength. When mixed with sand and water only and without the addition offurther materials it produces a workable mortar suitable for use in rendering, plastering and masonry work3.2additivesconstituents which are added to improve the manufacture or the properties of the masonry cement, e.g.grinding aids, air-entraining agents3.3autocontrol testingcontinual testing by the manufacturer, of masonry cement spot samples taken at the point(s) of releasefrom the factory/depot3.4control periodperiod of production and despatch identified for the evaluation of the autocontrol test results3.5characteristic valuevalue of a required property outside of which lies a specified percentage, the percentile Pk, of all thevalues of the population3.6specified characteristic valuecharacteristic value of a mechanical, physical or chemical property which in the case of an upper limit isnot to be exceeded or, in the case of a lower limit is, as a minimum, to be reached3.7single result limit valuevalue of a mechanical, physical or chemical property which, for any single test result as in the case of anupper limit is not to be exceeded or, in the case of a lower limit is, as a minimum, to be reached3.8allowable probability of acceptance CRfor a given sampling plan, the allowed probability of acceptance of masonry cement with a characteristicvalue outside the specified characteristic value3.9sampling planspecific plan which states the (statistical) sample size(s) to be used, the percentile Pk and the allowableprobability of acceptance CR3.10spot samplesample taken at the same time and from one and the same place, relating to the intended tests.
It can beobtained by combining one or more immediately consecutive increments (see EN 196-7)
EN 413-1:2004 (E)84 NotationMasonry cement is designated by the term 'MC'.There are three strength classes of masonry cement, 5, 12,5 and 22,5.The term 'X' designates masonry cements in which an air entraining agent is not incorporated.5 Requirements5.1 GeneralThe physical, mechanical and chemical properties of masonry cements shall be measured by the testmethods described in EN 413-2 and in the relevant parts of EN 196. These European Standards givealternative test methods for some properties but in the event of a dispute only the reference methodsshall be used. Where allowed in the relevant part of EN 196, different methods may be used providedthey give correlated and equivalent values to those obtained using the reference method.The CEN Standard sand (see EN 196-1) used to make the mortars for the tests required by 5.3.5 and5.3.6 shall have a silica content (as quartz) of not less than 93 %.NOTEEN 196-1 permits the use of CEN Standard sands that have been assessed against the CENReference sand in respect of their strength characteristics. According to this standard the CEN Standard sand isused in mortar for tests other than that for strength. These tests have only been evaluated using CEN Standardsand based essentially on silica.All requirements are specified as characteristic values. They serve to define the performance leveland classification of the masonry cements.5.2 Constituents and compositionMasonry cement shall comprise Portland cement clinker, inorganic constituents and whereappropriate additive(s) as given in Table 1. Calcium sulfate is added in small quantities to the otherconstituents of masonry cement during its manufacture to control setting.The inorganic constituents of masonry cements conforming to EN 413-1 shall be materials selectedfrom:¾ natural mineral materials;¾ mineral materials used for or derived from the clinker production process;¾ hydrated and/or hydraulic building limes conforming to EN 459-1;¾ constituents specified in EN 197-1;¾ inorganic pigments (except those containing carbon black) conforming to EN 12878.NOTECarbon black has a detrimental effect upon the air entrainment.Additives shall not promote corrosion of embedded metal such as reinforcement and wall ties orimpair the properties, including behaviour in fire, of the mortar made from the masonry cement.Organic pigments are not permitted.
EN 413-1:2004 (E)9Table 1 — Composition of masonry cementsContent% by massTypePortland cement clinkerAdditivesMC 5³ 25MC 12,5 MC 12,5 X³ 40MC 22,5 X£ 1 aa The quantity of organic additives on a dry basis shall not exceed 0,5 % by mass ofthe masonry cement.The manufacturing process and its control shall ensure that the composition of masonry cement is keptwithin the limits fixed in EN 413-1. Masonry cements consist ultimately of individual small grains ofdifferent materials and are statistically homogeneous in composition resulting from quality assuredproduction and material handling processes.A high degree of uniformity in all masonry cement properties shall be obtained through mass productionprocesses, in particular, adequate grinding and homogenization. Qualified and skilled personnel and thefacilities to test, evaluate and adjust product quality are indispensable for producing masonry cement inaccordance with this European Standard.5.3 Physical and mechanical requirements5.3.1 Fineness (sieve residue)The residue on a 90 mm sieve shall be not more than 15 % by mass when determined in accordancewith EN 196-6.5.3.2 Initial setting timeThe initial setting time shall be not less than 60 min when determined in accordance with EN 413-2.5.3.3 Final setting timeWhere the initial setting time is less than 6 h, there is no requirement for final setting time. Where theinitial setting time is 6 h or more, the final setting time shall be not more than 15 h when determined inaccordance with EN 413-2.5.3.4 SoundnessThe expansion shall be not more than 10 mm when determined in accordance with EN 196-3.5.3.5 Fresh mortar requirementsThe properties of air content and water retention of fresh mortar shall be measured in accordancewith EN 413-2, on a mortar of standard consistence which shall have a value of penetration of (35 ± 3) mm using the plunger apparatus as the reference method. The flow table test is thealternative method. The test results shall meet the requirements given in Table 2.
EN 413-1:2004 (E)10Table 2 — Fresh mortar requirements given as characteristic valuesTypeAir content% by volumeWater retention% by massMC 5MC 12,5³ 8 and £ 22³ 80MC 12,5 XMC 22,5 X£ 6 a³ 75a The control of the masonry cement manufacturing process ensures that this upperlimit is not exceeded.NOTEAn air-entraining agent is incorporated into the masonry cements of lower strength classes toimprove their workability and durability. An upper limit is set for air content to maintain good bond strength tomasonry units. The water retention limits are specified for all classes of masonry cement to provide aperformance suitable for use with high suction masonry units.5.3.6 Compressive strengthThe compressive strength when determined in accordance with EN 196-1, or with EN 196-1 but usingthe compaction equipment and procedures given in 5.1.2.2.1 and 5.1.2.2.2 respectively of
EN 459-2:2001, at the fixed water/masonry cement ratio of 0,50 shall have the values given inTable 3.2)Table 3 — Compressive strength requirements given as characteristic valuesType7 day (early) strength MPa28 day (standard) strength MPaMC 5-³ 5 a)£ 15 aMC 12,5MC 12,5 X³ 7³ 12,5£ 32,5MC 22,5 X³ 10³ 22,5£ 42,5a A loading rate of (400 ± 40) N/s shall be used when testing specimens of type MC 5.Should it not be possible to remove the prisms from the moulds after 24 h, it is permitted to removethem at 48 h. Where the prisms are demoulded at 48 h this shall be recorded.EN 196-1 gives repeatability and reproducibility values for 28 day strength. On account of their lowerstrengths, values of 4 % and 8 % respectively are appropriate for masonry cements conforming to thisEuropean Standard.5.4 Chemical requirementsThe properties of the masonry cement shall conform to the requirements given in Table 4 whendetermined by the method indicated in this Table.NOTESome European countries have regulations for the content of water-soluble hexavalent chromium(see informative annex A).
2)EN 196-1 is currently being revised. The revision will incorporate both jolting and vibration methods ofcompaction. Reference to this revised standard will then supersede the references to 5.1.2.2.1 and 5.1.2.2.2 ofEN 459-2: 2001.
EN 413-1:2004 (E)11Table 4 — Chemical requirements given as characteristic valuesPropertyReference testTypeValuemethod% by massMC 5£ 2,0MC 12,5£ 3,0 aMC 12,5 XSulfate content (asSO3)EN 196-2MC 22,5 XMC 5No requirementMC 12,5£ 0,10MC 12,5 XChloride content(as CI)EN 196-21 bMC 22,5 Xa £ 3,5 % if the Portland cement clinker content can be shown to be not less than 55 %.b EN 196-21 is currently being revised and incorporated into EN 196-2.5.5 Durability requirementsTo ensure durability, the requirements of 5.2 shall be met.In many applications, particularly in severe environmental conditions, the choice of masonry cement typefrom this standard has an influence on the durability of mortar. The choice of masonry cement type fordifferent applications and exposure classes shall follow the appropriate standards and/or regulations validin the place of use of the mortar.6 Standard designationMasonry cement conforming to this European Standard shall be identified using the notation in clause 4,i.e. the symbol 'MC', followed by the strength class and when relevant, by the letter 'X'.EXAMPLEMasonry cement EN 413-1 MC 12,5 X.7 Conformity criteria7.1 General requirementsConformity of masonry cement to this European Standard shall be continuously evaluated on the basis oftesting spot samples. The properties, test methods and the minimum testing frequencies for theautocontrol testing by the manufacturer are specified in Table 5. Concerning testing frequencies formasonry cement not being despatched continuously and other details, see EN 197-2.For certification of conformity by an approved certification body, conformity of masonry cement to thisEuropean Standard shall be evaluated in accordance with EN 197-2.NOTEThis European Standard does not deal with acceptance inspection at delivery.
EN 413-1:2004 (E)127.2 Conformity criteria for physical, mechanical and chemical properties andevaluation procedure7.2.1 GeneralConformity of masonry cement with physical, mechanical and chemical requirements in EN 413-1 isassumed if the conformity criteria specified in 7.2.2 and 7.2.3 are met.Conformity shall be evaluated on the basis of continual sampling using spot samples taken at the point ofrelease and on the basis of the test results obtained on all autocontrol samples taken during the controlperiod.7.2.2 Statistical conformity criteria7.2.2.1 GeneralConformity shall be formulated in terms of a statistical criterion based on:¾ the required characteristic values for physical, mechanical and chemical properties as specifiedin 5.3 and 5.4;¾ the percentile Pk on which the specified characteristic value is based, as specified in Table 6;¾ the allowable probability of acceptance CR as specified in Table 6.
EN 413-1:2004 (E)13Table 5 — Properties, test methods and minimum testing frequencies for the autocontroltesting by the manufacturer, and the statistical assessment procedureAutocontrol testingMinimum testing frequencyStatistical assessmentprocedureInspection byPropertyMasonrycements tobe testedTestmethod a,
bRoutinesituationInitial periodfor a newtype ofmasonrycementVariables dAttributes f1234567Strength- 7 daysall except MC 5- 28 daysallEN 196-1 e1 each 2 weeks2/weekXInitial setting timeallEN 413-21 each 2 weeks2/weekXFinal setting timeas appropriateEN 413-2XSoundness(expansion)allEN 196-31/month1/weekXSieve residueallEN 196-61/month1/weekXAir contentMC 5, MC 12,5EN 413-21/week4/weekXWater retentionallEN 413-21/month1/weekXSulfate contentallEN 196-21 each 2 weeks2/weekXChloride contentall except MC 5EN 196-21 g1/month1/weekXCompositionall- c1/month1/weeka Where allowed in the relevant part of EN 196, other methods than those indicated may be used provided they give results correlatedand equivalent to those obtained with the reference method (except initial type testing).correlated and equivalent values to those obtained with the reference method.b The methods used to take and prepare samples shall be in accordance with the requirements of EN 196-7.c Appropriate method chosen by the manufacturer and for which a correlation with the method(s) used for initial type testing can beestablished.d If the data are not normally distributed, then the method of assessment may be decided on a case by case basis.e See 5.3.6.f If the number of samples is at least 1 each week during the control period, the assessment may be made by variables.g EN 196-21 is currently being revised and incorporated into EN 196-2.
EN 413-1:2004 (E)14Table 6 — Required values of Pk and CRAir content (upper limit)28 day strength (lower limit)All other requirementsThe percentile Pk on which thecharacteristic value is based5 %10 %Allowable probability ofacceptance CR5 %NOTEConformity evaluation by a procedure based on a finite number of test results can only produce anapproximate value for the proportion of results outside the specified characteristic value in a population. Thelarger the sample size (number of test results), the better the approximation. The selected probability ofacceptance CR controls the degree of approximation by the sampling plan.Conformity with the requirements of this European Standard shall be verified either by variables or byattributes, as described in 7.2.2.2 and 7.2.2.3 as specified in Table 5.The control period shall be 24 months.7.2.2.2 Inspection by variablesFor this inspection, the test results are assumed to be normally distributed.Conformity is verified when equations (1) and (2), as relevant, are satisfied.Lskx³-A_(1)andUskx£+A_ (2)where_xis the arithmetic mean of the totality of the autocontrol test results in the control period;sis the standard deviation of the totality of the autocontrol test results in the control period;kAis the acceptability constant;Lis the specified lower limit given in Tables 2 and 3;Uis the specified upper limit given in Tables 2, 3 and 4.The acceptability constant kA depends on the percentile PK on which the characteristic value is based,on the allowable probability of acceptance CR and on the number n of the test results. Values of kAare listed in Table 7.
EN 413-1:2004 (E)15Table 7 — Acceptability constantkAaNumber of testresults nfor Pk = 5 % bfor Pk = 10 % c20 to 212,401,9322 to 232,351,8924 to 252,311,8526 to 272,271,8228 to 292,241,8030 to 342,221,7835 to 392,171,7340 to 442,131,7045 to 492,091,6750 to 592,071,6560 to 692,021,6170 to 791,991,5880 to 891,971,5690 to 991,941,54100 to 1491,931,53150 to 1991,871,48200 to 2991,841,45300 to 3991,801,42> 4001,781,40NOTE
Values given in this table are valid for CR = 5 %.a The value of kA valid for each intermediate value on n may be used instead.b For air content (upper limit) and 28 days strength (lower limit).c For all other strength, physical and chemical requirements.7.2.2.3 Inspection by attributesThe number cD of test results outside the characteristic value shall be counted and compared with anacceptable number cA calculated from the number n of autocontrol test results and the percentile Pkas specified in Table 8.Conformity is verified when the following equation (3) is satisfied:cD
£ cA(3)The value of cA depends on the percentile Pk on which the characteristic value is based, on theallowable probability of acceptance CR and on a number n of the test results. Values of cA are listed inTable 8.
EN 413-1:2004 (E)16Table 8 — Values of cANumber of testresults n aPk = 10 %cANumber of testresults n aPk = 5 %20 to 39020 to 7940 to 54180 to 10955 to 692110 to 13970 to 843140 to 16985 to 994170 to 199100 to 1095200 to 219110 to 1236220 to 247124 to 1367248 to 273NOTE
Values given in this table are valid for CR = 5 %.a If the number of test results is n < 20 a statistically based conformitycriterion is not possible. Despite this, a criterion of cA = 0 shall be usedin case where n < 20.7.2.3 Single result conformity criteriaIn addition to the statistical conformity criteria, conformity of test results with the requirements of thisEuropean Standard requires that it shall be verified that each test result remains within the singleresult l
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