1、BRITISH STANDARD BS EN 13892-6:2002 Methods of test for screed materials Part 6: Determination of surface hardness The European Standard EN 13892-6:2002 has the status of a British Standard ICS 91.100.10 BS EN 13892-6:2002 This British Standard, having been prepared under the direction of the Buildi
2、ng and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 28 November 2002 BSI 28 November 2002 ISBN 0 580 40878 7 National foreword This British Standard is the official English language version of EN 13892-6:2
3、002. The UK participation in its preparation was entrusted by Technical Committee B/544, Plastering, rendering, dry lining, screeds and in situ floorings, to Subcommittee B/544/6, Screeds and in situ floorings, which has the responsibility to: A list of organizations represented on this subcommittee
4、 can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Searc
5、h” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obl
6、igations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary
7、 of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUR
8、OPENNE EUROPISCHENORM EN138926 November2002 ICS91.100.10 Englishversion MethodsoftestforscreedmaterialsPart6:Determinationof surfacehardness MthodesdessaidesmatriauxpourchapesPartie6: Dterminationdeladuretsuperficielle PrfverfahrenfrEstrichmrtelundEstrichmassenTeil6: BestimmungderOberflchenhrte This
9、EuropeanStandardwasapprovedbyCENon9October2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobt
10、ainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions.
11、CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITE
12、EFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN138926:2002EEN138926:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Principle4 4 Symbolsandabbreviations . .4 5 Appa
13、ratus .4 6 Procedure .5 7 Testreport . .5 Bibliography 7EN138926:2002(E) 3 Foreword Thisdocument(EN138926:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC303,“Floorscreedsand insituflooringsinbuildings“,thesecretariatofwhichisheldbyDIN. ItwaspreparedbyWorkingGroup2”ScreedmaterialsandfloorscreedsTestme
14、thods“takingintoaccountthe proposalssubmittedbyWorkingGroup1”ScreedmaterialsandfloorscreedsDefinitions,propertiesandre quirements“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyMay2003,andconflictingnationalstandardssh
15、allbewithdrawnatthelatestby May2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,N
16、orway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN138926:2002(E) 4 1Scope ThisEuropeanstandardspecifiesamethodfordeterminingthesurfacehardnessofmouldedmortarspecimens madefrommagnesitescreedmaterialorfromcementitiousscreed,calciumsulphatescreed,magnesiascreed andsyntheticresinscreedmater
17、ial.Thismethodisonlysuitableforscreedmaterialshavingaggregatesofsize lessthan4mm. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For d
18、atedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN13813, ScreedmaterialandfloorscreedsScreedmaterialPropertie
19、sandrequirements EN138921, TestmethodsforscreedmaterialsPart1:Sampling,makingandcuringspecimensfortest. 3Principle Thesurfacehardnessisdeterminedbymeasuringthepermanentdepthofindentationproducedbyasteelball placedonthesurfaceunderastandardload.Thesurfacehardnessiscalculatedastheloadontheballdevidedb
20、y thesurfaceareaofindentation. NOTE: Oncompletionofthemeasurementofsurfacehardness,theflexuralandcompressivestrengthmaybemeasuredon thesamespecimens. 4 Symbolsandabbreviations d isthediameterofthesteelball t istheindentationdepth F V istheinitialloadof(10 0,1)N F isthemainloadof(500 5)N SH isthesurf
21、acehardnessinN/mm 2 ,asdeterminedfromthetestparameters 5Apparatus Hardnesstestercapableofapplyingverticallyaninitialandamainloadontoa(10 0,01)mmsteelballwith precisemeasurementoftheverticalmovementusingadialgaugewith0,001mmscaleintervals. NOTE Thesteelballmaybeembeddedintheendofasteelbar,throughwhic
22、htheloadsareapplied.EN138926:2002(E) 5 6Procedure Thesurfacehardnessshallbemeasuredon3specimensmadeinaccordancewithEN138921.Eachspecimen shallbeweighed,thewidthanddepthofthespecimenshallbemeasuredmidwayalongitslength,andthedensity shallbecalculated. Apolishedsteelballof10mmdiameter,d,shallbeplacedon
23、theuppersurfaceofthespecimen,asprepared. Theinitialload, F V ,of(10 0,1)N(preload)shallbeappliedtothesteelball,carefullyandwithoutimpact.The initialvalueshallbemeasuredwithadialgaugeorthedialgaugeshallbeputtozero. Thenthemainload, F,of(500 5)Nshallbeappliedtothesteelballcarefullyandwithoutimpact,and
24、itshallbe maintainedforaperiodof1min. Afterthisperiod,thesteelballshallbeunloadedtothepreloadlevelof(10 0,1)N.Afteraperiodof1minthe indentationdepth, t,inexcessoftheinitialvalueshallbemeasuredwithadialgaugetothenearestof0,01mm. Thesurfacehardness, SH,shallbecalculated,inN/mm 2 ,usingthefollowingequa
25、tion: SH= p t Thesurfacehardnessshallberecordedtothenearest0,1N/mm 2 asthearithmeticmeanof3measurementson eachspecimen,andalsoasthearithmeticmeanforthe3specimens. 7 Testreport Thetestreportshallincludethefollowinginformation: a) number,titleanddateofissueofthisEuropeanStandard; b) nameandaddressofth
26、elaboratorycarryingoutthetestsandnameandaddressofthelaboratorypreparingthe samples(ifdifferent); c) identificationnumberofthetestreport; d) nameandaddressofthemanufacturerorsupplieroftheproduct; e) nameandidentificationmarksorbatchnumberoftheproduct; f) dateofsupplyoftheproduct; g) methodofsampling(
27、byreferencetoEN138921andbywhichorganisation); h) place,dateandtimeofsampling; i) identificationofthescreedsamples,includingtype,originanddesignationofthescreedmaterialbyreferenceto therelevantproductstandardEN13813; j) preparation(mixing,casting)andstorage(curing)conditionsbyreferencetoEN138921; k)
28、dateandtimeofpreparingsamplesfortest(i.e.dateandtimeofanymixing,casting,mouldingor demouldingprocedure,ifappropriate); l) ageofscreedmaterialwhentested;EN138926:2002(E) 6 m) densityofeachindividualtestsample; n) testmethodused(referencemanualoralternativemethod,ifappropriate),anddetailsoftestspecime
29、ns includingnumber,dimensions,mass,etc.ifappropriate; o) dateoftestandtheidentificationnumberoftheapparatusordetailsofthetestequipmentused,includingthe make,typeandcapacityandthecalibrationsdetails; p) testresults(individualvaluestothenearest0,05N/mm 2 ,andcorrespondingmeanvaluestatedtothenearest 0,
30、1N/mm 2 ); q) remarks; r) dateoftestreportandsignature.EN138926:2002(E) 7 Bibliography EN13318, ScreedmaterialsandfloorscreedsDefinitions.BS EN 13892-6:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing Briti
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