1、BRITISH STANDARD BS EN 13892-5:2003 Methods of test for screed materials Part 5: Determination of wear resistance to rolling wheel of screed material for wearing layer The European Standard EN 13892-5:2003 has the status of a British Standard ICS 91.100.10 BS EN 13892-5:2003 This British Standard wa
2、s published under the authority of the Standards Policy and Strategy Committee on 11 June 2003 BSI 11 June 2003 ISBN 0 580 42042 6 National foreword This British Standard is the official English language version of EN 13892-5:2003. The UK participation in its preparation was entrusted by Technical C
3、ommittee B/544, Plastering, rendering, dry lining, to Subcommittee B/507/6 (formerly designated B/544/6), Screeds and in situ floorings, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British
4、 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 “Search” facility of the BSI Electronic Catalogue or of British Standards Online
5、 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 obligations. aid enquirers to understand the text; present to the responsible
6、 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 of pages This document comprises a front cover, an inside front cover, th
7、e EN title page, pages 2 to 11 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 NORMEEUROPENNE EUROPISCHENORM EN138925 June2003 ICS91.100.10 Englishversion Metho
8、dsoftestforscreedmaterialsPart5:Determinationof wearresistancetorollingwheelofscreedmaterialforwearing layer MthodesdessaisdesmatriauxdechapePartie5: Dterminationdelarsistancelusureparroulette pivotanteMthodespourmatriauxdechapeavec couchedusure PrfverfahrenfrEstrichmrtelundEstrichmassenTeil5: Besti
9、mmungdesWiderstandesgegenRollbeanspruchung vonEstrichenfrNutzschichten ThisEuropeanStandardwasapprovedbyCENon3April2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatel
10、istsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguage
11、andnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ite
12、d Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN138925:2003EEN138925:2003(E) 2 Contents page Fo
13、reword3 Introduction .4 1 Scope 4 2 Normativereferences 4 3 Symbolsandabbreviations . .4 4 Principle4 5 Apparatus .5 5.1 Testrig 5 5.1.1 General5 5.1.2 Supportingtable .5 5.1.3 Swivelcastor . .5 5.2 Suctiondeviceforremovingabradedmaterial .5 5.3 Measuringbridge .5 5.4 Depthgauge . 5 6 Preparationoft
14、estspecimens. .6 7 Procedure .6 7.1 Profilemeasurement . 6 7.2 Testoperation 6 7.3 Determinationofwearprofile . 6 8 Testreport . .7 Bibliography 11EN138925:2003(E) 3 Foreword Thisdocument(EN138925:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC303“Floorscreedsand insituflooringsinbuildings“thesecreta
15、riatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyDecember2003,andconflictingnationalstandardsshallbewithdrawnatthelatest byDecember2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstand
16、ardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN138925:2003(E) 4 In
17、troduction ThisEuropeanStandardwaspreparedbyWorkingGroup2ScreedmaterialandfloorscreedsTestmethods“ takingintoaccounttheproposalssubmittedbyWorkingGroup1ScreedmaterialandfloorscreedsDefinitions, propertiesandrequirements“. NoexistingEuropeanStandardissuperseded. 1Scope ThisEuropeanStandardspecifiesam
18、ethodfordeterminingthewearresistancetoaheavilyloadedrollingwheel onmouldedmortarspecimensmadefromcementitiousscreedmaterialorsyntheticresinscreedmaterialor optionallyforotherscreedmaterialsintendedforwearingsurface. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,prov
19、isionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreference
20、sthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN10084 ,CasehardeningsteelsTechnicaldeliveryconditions. EN13813,ScreedmaterialsandfloorscreedsScreedmaterialPropertiesandrequirements. EN138921, MethodsoftestforscreedmaterialsPart1:Sampling,makingandcuringspecimensfortest. I
21、SO606, Shortpitchtransmissionprecisionrollerchainsandchainwheels. 3 Symbolsandabbreviations RWA wearresistancetoRollingWheel,expressedincm 3 d depthofwearin m 4Principle Concreteslabssurfacedwithscreedmaterialaresubjectedtotherepeatedpassagesofaheavilyloadedrolling wheel.Thespecimenfixedtoasupportmo
22、vesunderaheavilyloadedcastorwheelintwoperpendiculardirections atdifferentfrequencies.Themovementcreatesnormalandshearstressontothescreedmaterial.Atthepoints wherethecastorturns,shearstresscausedbyatorsionactionissuperimposed. Theabrasionresistanceisdeterminedbythechangeinsurfaceprofile.EN138925:2003
23、E) 5 5Apparatus 5.1 Testrig 5.1.1General TheprincipleofthetestrigisshowninFigure1. NOTE ThetestrigisthesameasinEN1818,exceptfortheswivelcastorandtheload. 5.1.2Supporting table Thesupportingtableshouldbelevelandatleast700mmx800mm.Itsupportsthetestspecimenwhileitis movedundertheloadedcastor,described
24、in5.1.3.Thesupportingtableandspecimenmoveunderthecastor wheelintwodirectionsatrightangle,withalongitudinalmovementof(390 2) mmwithafrequencyof (7,00,4)cycles/minute,andtransversemomentof(2602)mmandafrequencyof(1,720,1)cycles/minute. Forthewearonthetestareatobeuniform,thetwomovementsshallnotbecoordin
25、ated,butmaybedrivenfor examplebyacommonmotorwitharollerchaintransmissionasdescribedinISO606,withchainwheelswithfifty sevenandfourteenteethrespectively. Theratioofthefrequenciesshallbe4,070,03toensurethatthewheeldoesnotfollowthesamepathallthe time. 5.1.3Swivel castor TheswivelcastorisshowninFigure2.T
26、hewheelshallbemadeofcasehardenedsolidsteelwithVickers hardness 735HV(throughoutatleasttheouter1,5mmoftheradius).Asuitablesteelqualityis16NiCrS4 accordingtoEN10084.Thediametershallbe(125 2)mm,thewidthshallbe(40 1)mm.Thetravellingsurface shallbecylindricalwithchamferededgewithradius1mm.Thecastorshallb
27、eabletomovefreelyabouttheswivel axis. Theswivelaxisshallbefreetomovevertically(whichmaybeachievedwithrollerbearingsatbothendsofthe axis,atleast300mmapart)andshallbeloadedsothatthetotalloadappliedbythecastoris(2000 10)N.The overhangshallbe(45 1)mm,seeFigure2. 5.2 Suctiondeviceforremovingabradedmateri
28、al Thetestrigshallbeequippedwithsuctionnozzlesonbothsidesofthewheelinitstravellingdirection.Thenozzles shallbeconnectedtovacuumdevices,forexamplevacuumcleaners.Thesuctionarrangementshallhavesucha capacitythattheabradedmaterialiscontinuouslyremovedfromthespecimensurfaceduringthetest. 5.3Measuring bri
29、dge ArigidsteelbridgeshallbeusedasshowninFigure3.Thisshallhave5locatingpositionsineachofwhichthe depthgauge(5.4)shallseatfirmlyandreproducibly. 5.4Depth gauge Thegaugeusedtomeasurethedepthoftheprofileshallbecapableofbeingreadtothenearest10m.Theend oftheslidercontactingthesurfaceshallberounded.EN1389
30、25:2003(E) 6 6 Preparationoftestspecimens Thewearresistancetorollingwheelshallbemeasuredon3specimenmadeinaccordancewithEN138921. Squareslabswithminimumedgelengthof500mmandwithathicknessof 50mmshallbeusedasspecimens Wherethescreedmaterialisnotdesignedtobeappliedatthisthicknessitshouldbeappliedontoaco
31、ncrete substrateaccordingtoEN138921. Thecontactsurfaceandtheoppositefaceofthespecimenshallbeparallelandflat. Itshallbeensuredthatthetestspecimenissurfacedryandfreeofcontaminants.Anydust,dirtordebrisshallbe removedwithabrushorbyvacuuming. 7Procedure 7.1Profile measurement Themeasuringbridgeshallbepla
32、cedonthetestspecimeninthepositionsasshowninFigure4.Thepositionof thefeetofthemeasuringbridgeshallbemarkedonthesurfaceofthetestspecimen.Thedepthofthesurface belowthebridgeateachofthemeasuringpointsshallbedeterminedwithadepthgaugeandrecorded. Alternatively,theprofilemeasuringdeviceofEN1818:1998clause4
33、2,maybeused. 7.2 Testoperation Thetestspecimenshallbefixedonthesupportingtableinsuchawaythattheabradedareawillbecentralised. Theapparatusandthesuctiondeviceshallbestartedandtheloadedwheelshallbeloweredgentlyintocontact withthetestspecimen.Thedurationofthetestshallbe10000 cyclesindirectionofthelongm
34、ovement (approximately24h).Ifnecessary,thiscanberunintermittently. Ifseveredamageoccurs,orthewearreachestheconcretesubstrate,thetestshallbestoppedimmediately.and thenumberofcyclesrecorded.Inthiscasethescreedmaterialfailedthetest. 7.3 Determinationofwearprofile Theprofilemeasurementasgivenin7.1shallb
35、erepeated.Foreachmeasuringpoint,thedepthofwearis calculatedfromthedifferenceinthebeforeandafterreadings.Themeandepthofwearinmicronsshallbe calculated.Theabrasionquantityshallbecalculatedtothefollowingequation: d RWA 11 , 0 (1) where d isthemeandepthinm NOTE Thisequationassumesthattheabradedareais110
36、0cm Theresultforeachspecimenshallbeexpressedincm,themeanvalueshallbecalculatedandexpressedtothe nearestcm. Aphotographofthewearpatternverticallyfromabovemaybetakentoprovideinformationontheabraded surface.Aremarkcanbemadeifthetesthascausedexcessiveindentationwithoutwear.EN138925:2003(E) 7 8 Testrepor
37、t Thereportshallincludethefollowinginformation: a) thenumber,titleanddateofissueofthisEuropeanStandard; b) nameandaddressofthelaboratorycarryingoutthetestsandnameandaddressofthelaboratorypreparingthe samples(ifdifferent); c) identificationnumberofthetestreport; d) nameandaddressofthemanufacturerorsu
38、pplieroftheproduct; e) nameandidentificationmarksorbatchnumberoftheproduct; f) dateofsupplyoftheproduct; g) themethodofsampling(byreferencetoEN138921)andbywhichorganisation; h) theplace,dateandtimeofsampling; i) identificationofthescreedsamples,includingtype,originanddesignationofthescreedmaterialby
39、referenceto therelevantproductstandardEN13813; j) preparation(mixing,casting,preparationofthesubstrate,useofthebondingagent,ifappropriate)andstorage (curing)conditionsbyreferencetoEN138921; k) thedateandtimeofpreparingspecimensfortest(i.e.dateandtimeofanymixing,casting,mouldingor demouldingprocedure
40、ifappropriate); l) ageofscreedmaterialwhentested; m)testmethodused(referencemanualoralternativemethod,ifappropriate),anddetailsoftestspecimens includingnumber,dimensions,mass,etc.ifappropriate; n) dateoftestandtheidentificationnumberoftheapparatusordetailsofthetestequipmentused,includingthe make,ty
41、peandcapacityandthecalibrationsdetails; o) individualvaluesandcorrespondingmeanvalueofeachtestspecimen.Thedifferencesoftheabrasion quantitiesstatedtothenearest10m; p) remarks; q) dateoftestreportandsignature.EN138925:2003(E) 8 Key 1 Testpiece 2 Travel(260 2)mm/Frequency(1,71 0,1)cyclesperminute 3 Tr
42、avel(390 2)mm/Frequency(7 0,4)cyclesperminute 4 Supportingtable 5 Concreteslab 6 Screed Figure1PrinciplesketchoftestrigEN138925:2003(E) 9 Dimensionsinmillimetres Key a Overhang 4 Fork b Wheelheight 5 Wheelaxle 1 Swivellingaxis 6 Wheelbody 2 Mountingplate 7 Wheelring 3 Bearing 8 Travellingsurface Fig
43、ure2Heavilyloadedrollingwheel Dimensionsinmillimetres Key a Abradedarea 3 Locatingfeet 1 Measuringpoints 4 Testspecimen 2 Rigidsteelbar 5 Supportingtable Figure3MeasuringbridgeEN138925:2003(E) 10 Dimensionsinmillimetres Key 1 PositionsforMeasuringbridge 2 Abradedarea 3 Directionoflongmovement Figure4ProfilemeasurementspositionsEN138925:2003(E) 11 Bibliography EN1818:1998, ResilientfloorcoveringsDeterminationoftheeffect
