1、BRITISH STANDARD BS EN 13892-1:2002 Methods of test for screed materials Part 1: Sampling, making and curing specimens for test The European Standard EN 13892-1:2002 has the status of a British Standard ICS 91.100.10 BS EN 13892-1:2002 This British Standard, having been prepared under the direction
2、of the Building 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 40863 9 National foreword This British Standard is the official English language version of
3、 EN 13892-1:2002. 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
4、 subcommittee 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 usi
5、ng the “Search” 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 f
6、rom legal obligations. 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 th
7、e UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover 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. Da
8、te CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN138921 November2002 ICS91.100.10 Englishversion MethodsoftestforscreedmaterialsPart1:Sampling,making andcuringspecimensfortest MthodesdessaidesmatriauxpourchapesPartie1: Echantillonnage,confectionetcuredesprouvettesdessai PrfverfahrenfrEstr
9、ichmrtelundEstrichmassenTeil1: Probenahme,HerstellungundLagerungderPrfkrper ThisEuropeanStandardwasapprovedbyCENon9October2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Up
10、todatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownl
11、anguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. E
12、UROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN138921:2002EEN138921:2002(E) 2 Contents page Foreword3 1 Sc
13、ope 4 2 Normativereferences 4 3 Sampling.5 3.1 Apparatus .5 3.2 Procedure .5 4 Mixing5 4.1 General5 4.2 Apparatus .5 4.3 Amountofmortarformakingspecimens . 6 4.4 MixingwiththemixeraccordingtoEN1961 . 6 4.5 Mixingwithaconcretemixer 6 4.6 Mixingwithothermixers .6 5 Makingtestspecimens. .6 5.1 Apparatu
14、s .6 5.2 Concretesubstrate 8 5.3 Procedure .8 6 Curing8 6.1 Apparatus .8 6.2 Storage8 7 TestReport . 9 Bibliography 10EN138921:2002(E) 3 Foreword Thisdocument(EN138921:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC303,“Floorscreedsand insituflooringsinbuildings“,thesecretariatofwhichisheldbyDIN. Itw
15、aspreparedbyWorkingGroup2”ScreedmaterialandfloorscreedsTestmethods“takingintoaccountthe proposalssubmittedbyWorkingGroup1”Screedmaterialandfloorscreeds Definitions,propertiesand requirements“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendor
16、sement,atthelatestbyMay2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby May2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,German
17、y,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN138921:2002(E) 4 1Scope ThisEuropeanstandardspecifiesamethodforsamplingofscreedmaterials,makingandcuringofspecimensfor subsequenttesting. Thismethodappliestodrymaterial(baggedor
18、bulk)ortofreshlymixedscreedmaterials(readymixedorsite mixed)ortoproductssuppliedinprepackagedformorinpacksreadyformixing. Thisstandardappliesto: samplesofprepackagedscreedmaterialstakenbythemanufacturerduringproductionand/orbeforedispatch,by thecontractororclientbeforeorduringtheperiodofuseandsubseq
19、uentlyincasesofdisputebyanyinterested partyandsamplesofthefullymixedproductbeforelaying. Thismethodappliestomortarsofcementitious,calciumsulphate,magnesiteandsyntheticresinscreedmaterial. FormasticasphaltscreedmaterialseeprEN1269720andprEN 1 269721.Somemethodsaccordingto manufacturersinstructionsmay
20、benecessaryforspecialsyntheticresinscreedmaterial. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendm
21、entstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN1961, MethodsoftestingcementPart1:Determinationofstrength. EN1967:1989, Methodsoftestingce
22、mentPart7:Methodsoftakingandpreparingsamplesofcement. EN13813, ScreedmaterialandfloorscreedsScreedmaterialPropertiesandrequirements. EN138922, TestmethodsforscreedmaterialsPart2:Determinationofflexuralandcompressivestrength. EN138923, TestMethodsforscreedmaterialsPart3:DeterminationofwearresistanceB
23、hme. EN138924, TestMethodsforscreedmaterialsPart4:DeterminationofwearresistanceBCA. prEN138925, MethodsoftestforscreedmaterialsPart5:Determinationofwearresistancetorollingwheel Methodsforscreedmaterialforwearinglayer. EN138926, TestMethodsforscreedmaterials Part6:Determinationofsurfacehardness. prEN
24、138927, TestMethodsforscreedmaterialsPart7:Determinationofresistancetorollingwheel Methodsforscreedmaterialwithfloorcoverings. EN138928, TestMethodsforscreedmaterials Part8:Determinationofbondstrength. ENISO178, Plasticsdeterminationofflexuralproperties(ISO178:1993). ENISO6272, PaintsandvarnishesFal
25、lingweighttest(ISO6272:1993).EN138921:2002(E) 5 3Sampling 3.1Apparatus Ametalorrigidplasticsreceptacleorscoopofnotlessthan1lcapacity;Clean,dry,airtightcontainerswhichshall beinthatconditionatthecommencementofthesamplingoperation. 3.2Procedure Thecompositionofsamplesshallalwaysberepresentativeoftheav
26、eragecompositionofthematerial.Inthecase ofprepackagedproducts,themanufacturersrecommendationsforhandlingoftheindividualcomponentsshould befollowed. Thetestreportshallstatewhetherthesamplestakenarespotsamplesorcompositesamples(see3.6and3.7of EN1967:1989) Theminimumamountsofsamplematerialshouldbe5000g
27、.Ifagreateramountofscreedmaterialisrequiredthe sampleshouldcontainafullpackageofthematerial(e.g.a25kgsack). Sampleswhicharelikelytochangeinairshallbeplacedinairtightcontainers,suchascans,immediatelyafterthey havebeentaken. Whereverpossiblespecimensshouldbepreparedimmediatelyafterobtainingthesample,i
28、fnecessaryonsite.The specimensshallbepreparedwithinthemanufacturersstatedworkingtime. Iftransportationoffreshsamplescannotbeavoided,theyshallbesuppliedimmediatelyfortesting,accompanied byawritteninstructionstatingwhichtestsshallbecarriedout,andprotectedfromchanges,suchaslossofwater, entryofwateretc.
29、,asmayoccurduringtransportation.Specimensshallbepreparedimmediatelyonreceiptofthe sample,afterthesamplehasbeenmixedagainmanually. 4Mixing 4.1General Themixingshallbecarriedoutinstrictaccordancewiththemanufacturersinstructions,usingthewaterorliquid contentindicated.Ifarangeofvaluesisgivenforthewatero
30、rliquidaddition,themeanvalueshallbeused.Ifthe manufacturerdeclarestheconsistencyofthemixedscreedmaterialthenthisvalueshouldbeobtained.The temperatureofthetestroom,theequipmentandthematerials(drymaterial,water)shallbe(20 5)C. 4.2Apparatus Mortarmixer,inaccordancewithEN1961; Concretemixer,(forcedactio
31、npanmixer); Othermixertype,accordingtomanufacturersinstructions;EN138921:2002(E) 6 4.3 Amountofmortarformakingspecimens Thesolidcontentofapreparedmixedscreedmaterial,orthevolumeofthefreshmixedscreedmaterial,shallbe withintherangegiveninTable1. Table1Solidcontentandvolumeofthemixedscreedmaterial Mixe
32、raccording toEN1961 Concretemixer Solidcontentinkg 1,0to3,0 25to50 Volumeindm 1,5 50 Itmaybenecessarytomakemultiplemixes. 4.4 MixingwiththemixeraccordingtoEN1961 Allthesolidmaterialsshallbeputintothemixerandblended.Thespecifiedquantityofliquidsshallbeaddedover aperiodof15secondswhilethemixerisrunnin
33、gatlowspeed.Themixingshallbecontinuedatlowspeedfora further45seconds.Themixershallbestoppedandthesidesofthemixingvesselshallbescrapedwithablade.It shallbemixedforafurtherminuteatloworhighspeedasrecommendedbythemanufacturer. FormixingcalciumsulphatescreedmaterialsseeprEN134542. 4.5 Mixingwithaconcret
34、emixer Themixingprocessinstructionsshallbefollowed,setoutbythemanufacturersdatasheetorontheproductlabel. ThesolidcontentofdrymortarmixshallbeaddedtothemixerasprescribedinTable2andsubsequently,the waterorliquidshallbeaddedoveraperiodof15secondswiththemixerrunning.Thentheprocessshallbe completedbymixi
35、ngforafurther120sto180suntilitappearsuniform. 4.6 Mixingwithothermixers Materialsforwhichnoneoftheabovementionedmixingproceduresissuitable,shouldbemixedaccordingtothe manufacturersinstructions. 5 Makingtestspecimens 5.1Apparatus Mouldsfortestspecimensshallgenerallybemanufacturedfromsteeloracomparabl
36、ematerialwhichisnon reactivetoscreedmaterial;thesizeandshapeofwhichareparticulartothetesttobeundertakenandaregivenin Table2.Mouldsmaybesuchastoproducesingleormultiplespecimens.EN138921:2002(E) 7 Table2Sizeofthemouldorthespecimens Test Specimen/Mouldsize lw d a Numberof specimens Required Flexuraland
37、CompressiveStrength EN138922 ENISO178 160mmx40mmx40mm 80mmx10mmx4mm 3 WearresistanceBhme EN138923 71mmx71mmx d ) 3 WearresistanceBCA EN138924 500mmx500mmx d ) 1 Wearresistancetorollingwheel prEN138925 500mmx500mmx d ) 1+1 Surfacehardness EN138926 160mmx40mmx40mm 3 Shrinkage/Swelling EN134542 160mmx4
38、0mmx40mm 3 Resistancetorollingwheelwith floorcoveringprEN138927 350mmx350mmx d ) 3+3 Bondstrength EN138928 300mmx300mmx d ) 2 Modulusofelasticity ENISO178 80mmx10mmx4 mm(preferred) 3 ImpactresistanceENISO6272 300mmx300mmx d ) 1 a Forsomeproducts,thethickness dmaybetheintendedappliedthicknessonlyorth
39、eintended appliedthicknessontoasupportslab Themouldforthe160mmx40mmx40mmprismsshallfulfilthefollowingrequirements: a) Dimensionalaccuracy Thedimensionalaccuracyofthemouldshallbe 0,25%ontherelevantdimension.Thisshallbebasedonthe averageofaminimumoffoursymmetricallyplacedmeasurementswithnosinglereadin
40、gbeyond 0,5% b) Flatness Thesurfaceofeachinternalfaceshallliebetweentwoparallelplanes0,03mmapart. c) Squareness Theinternalanglesofthemouldshallbe90 tan 1 (0,005). d) SurfaceTexture Thesurfacetextureofeachinternalsurfaceshallnotbegreaterthan3,2 m mRa.EN138921:2002(E) 8 5.2 Concretesubstrate Inthosec
41、aseswherescreedmaterialsaretobetestedonaconcretesubstrate,thisconcreteshouldhavea surfacetensilestrengthofatleast1,5N/mm.Abondingagentshouldbeused,ifthemanufacturerofthescreed materialprescribesthis.Ifthescreedthicknessismorethan30mm,asubstratewillbeunnecessary.Additional requirementsforthesubstrate
42、maybefoundinthetestmethodstandard(e.g.EN138928Determinationofbond strength) 5.3Procedure Themouldsshallbecleanedusingaccessoriesmadefromamateriallesshardthanthatofthemould(eg.copper orwood).Theinternalfacesoftheassembledmouldsshallbelubricatedwithaseparatingmaterialtoprevent adhesionofthemortar.Ifth
43、escreedmaterialistobecastonaconcretesubstrate,themouldshouldbesuchthat leakingisprevented. Themouldshallbefilledandcompactedinoneofthefollowingmethods: a) Forflowingscreedmaterial,themouldshallbefilledinonepour. b) Forotherscreedmaterial,themouldshallbefilledintwoapproximatelyequallayers,eachlayerbeingfully compactedbyasuitabletamper,theshocktableorthevibrationtableaccordingtoEN1961.Ex
