BSEN

13892-4:2002

BRITISHSTANDARD

Methodsoftestforscreedmaterials

Part4:Determinationofwearresistance-BCA

TheEuropeanStandardEN13892-4:2002hasthestatusofaBritishStandard

ICS91.100.10

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BSEN13892-4:2002

Nationalforeword

ThisBritishStandardistheofficialEnglishlanguageversionofEN13892-4:2002.

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EUROPEANSTANDARDNORMEEUROPéENNEEUROP?ISCHENORM

EN13892-4

November2002

ICS91.100.10

Englishversion

Methodsoftestforscreedmaterials-Part4:Determinationofwearresistance-BCA

Méthodesd'essaisdesmatériauxpourchapes-Partie4:Déterminationdelarésistanceàl'usureBCA

PrüfverfahrenfürEstrichmortel-Teil4:BestimmungdesVerschlei?widerstandsnachBCA

ThisEuropeanStandardwasapprovedbyCENon9October2002.

CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-dateistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember.

ThisEuropeanStandardexistsinthreeoficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibityofaCENmemberintoitsownlanguageandnotfiedtotheManagementCentrehasthesamestatusastheoficialversions.

CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,taly,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.

EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITéEUROPéENDENORMALISATIONEUROPAISCHESKOMITEEFURNORMUNG

ManagementCentre:ruedeStassart,36B-1050Brussels

◎2002CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.

Ref.No.EN13892-4:2002E

2

EN13892-4:2002(E)

Contents

page

Foreword

3

1Scope

4

2Normativereferences

4

3Principle

4

4Symbols

4

5Apparatus

4

5 kainbgrila45

5.3Depthgauge

5

6Preparationofspecimens

6

77.1DPeropege 66

7.3Testoperation

6

7.2Setingup

6

8Testreport

7

3

EN13892-4:2002(E)

Foreword

Thisdocument(EN13892-4:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC303,"Floorscreedsandin-situflooringsinbuildings",thesecretariatofwhichisheldbyDIN.

ItwaspreparedbyWorkingGroup2“Screedmaterialsandfloorscreeds-Testmethods”takingintoaccounttheproposalssubmittedbyWorkingGroup1“Screedmaterialsandfloorscreeds-Definitions,propertiesandrequirements”

ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyMay2003,andconflictingnationalstandardsshallbewithdrawnatthelatestbyMay2003.

AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland,

France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.

4

EN13892-4:2002(E)

1Scope

oThisEuropeanStandardspecifiesamethodfordeterminingthewearresistanceoftestspecimensmadefromcementitious-orsyntheticresinscreedmaterialoroptionallyforotherscreedmaterials.Themethodisalsosuitableforfloorscreeds.

2Normativereferences

ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies(includingamendments).

EN13813,Screedmaterialandfloorscreeds-Screedmaterial-Propertiesandrequirements

EN13892-1,TestMethodsforscreedmaterials-Part1:Sampling,makingandcuringspecimensfortest.

3Principle

Thewearresistance-BCAofthescreedsurfaceisassessedbymeasuringthemeandepthofwearcausedbyamachinewiththreehardenedsteelwheelsrotatingoveraringshapedareaforafixednumberofrevolutionsunderastandardload.Themeandepthofwearwithintheringpatternisusedtoindicatethewearresistanceofthescreedsurfaceatthetestlocation.

4Symbols

ARisthewearresistance-BCA,whichisthemeandepthofwearinm.

d?isthemeandepthofthemeasurementsmadeatalleightmeasuringpointspriortotestinginm.

dwisthemeandepthofthemeasurementsmadeatalleightmeasuringpointsaftercompletion

ofthetestinm.

5Apparatus

5.1BCAabrasiontestmachine

Thetestmachinehasthefollowingfeatures,seeFigure1.

a)Anabrasionheadconsistingofthreethroughhardenedsteelwheelsasdescribedine),tangentiallymountedontoacircularsteelplateatequalradialintervalssothewheelscanfreelyrotateinacircularpathwithanominalmeandiameterof(225±1)mm.Thewheelsarenotfreetorotateabouttheirverticalaxes.

b)Anabrasionheadisconnectedbyashafttoanelectricmotorandgearboxcapableofrotatingtheabrasionheadatamanufacturer'sratedspeedof(180±15)min1for(2850±10)revolutions.

5

EN13892-4:2002(E)

Variationsinthemotorparameters,phaseandsupplyvoltagemaycausemarginalvariationsinrotationalspeedduringoperation.Thetestdurationof(2850±10)revolutionsoftheabrasionheadapproximatesto15min.

c)Acircularsteelplate,towhichadditionalweightsarefixedsothatthetotalloaddistributedtothewheelsis(65,00,5)kg.Theplateisconnectedtothemotorbyashaftthatallowsittomovevertically

d)Asteelframeonwhichthemotorandabrasionheadaremounted.Theframehas4feetbearingontothefloorsurface.Theframeisrestrainedfromlateralmovementduringthetestbytwosteelpinsinsertedthroughtwonominal10mmdiameterholesdrilledinthefloorcoincidentwithlocatingholesinthefeetoftheframeatthebaseofdiagonallyoppositelegs.

e)Steelwheelstothefollowingspecification:

Diameter76,00mmmaximum

Width20,0mmto20,1mm

withchamfersof0,2mmto0,3mm.

Vickershardness≥735HV(throughoutatleasttheouter1,5mmofthe

radius)

Thiscanbeachievedbymanufacturingthewheelsfromtoolsteel,withthefollowingheattreatment:

Pre-heat750°Cto800°C

Hardeninairoroil980°Cto1030°C

Doubletemperfrom500°Cto520°C

andgrindingtotheexactspecification.Othermethodsofhardeningmaybeusedaslongasthespecifiedhardnessofthewearingsurfaceisobtained:Thewheelsshallhaveaminimumdiameterof73,0mmatanypointacrossthewheeltread.Wheelsshallbereplacedincompletesets.

5.2Markingouttemplate

Acirculartemplate(seeFigure1)isusedtomarkoutthepositionofthedepthgaugefeetandtheholestobedilledforlocatingtheframe.Theserestrainingpinholesare456mmapartandequidistantfromthecentreofthewheeltrack.Theholesinthetemplatearepositionedatanequalradialspacingof45°sothatwhenthedepthgaugeisplacedonthefloor,withitsfeetonthemarks,thegaugesliderrestsonthecentrelineofthewheeltrack.

5.3Depthgauge

Thegaugeusedtomeasurethedepthofwearshallbecapableofbeingreadtothenearest10μm.Thedistancebetweenthefeetofthegaugeshallenableittostraddlethewheeltrackofthetestmachine.Theendoftheslidercontactingthefloorshallberounded.

Asteelshimof1,50mmto2,00mmthicknessisusedtosettheinitialpositionofthegaugesliderfromwhichsubsequentreadingsaretaken.Alternatively,asetofstandardfeelergaugesmaybeused.Thedepthgaugemaythenbeaccuratelyresetifnecessaryduringthecourseofthetestingandcheckedagainattheendoftestingintheeventofbatterypowerfailure,etc.

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EN13892-4:2002(E)

6Preparationofspecimens

ThewearresistanceBCAshallbemeasuredon3specimensmadeinaccordancewithEN13892-1.

Squareslabswithaminimumedgelengthof500mmandaminimumthicknessof50mmshallbeusedasspecimens

WherethescreedmaterialisnotdesignedtobeappliedatthisthicknessitshouldbeappliedontoaconcretesubstrateaccordingtoEN13892-1.

Thecontactfaceandtheoppositefaceofthespecimenshallbeparallelandflat.

Itshallbeensuredthatthetestspecimenissurfacedryandfreeofcontaminants.Anydust,dirtordebrisshallberemovedwithabrushorbyvacuuming.

7Procedure

7.1Depthgauge

Thedepthgaugeshallbeplacedonasuitableflatsurface:themarkingouttemplatecanbeused.Thepositionsofthethreefeetofthegaugeshallbemarkedsothatitcanberepositionedforlaterreadings.Insertthe1,50mm-2,00mmsteelshimundertheendoftheslider,ensuringthattheshimisincontactwiththesurfaceandthattheendofthesliderisincontactwiththeshim.Thereadingofthegaugeshallbesettozero.Thisenablesdepthreadingstoberecordedaspositivevalues.Theshimshallberemovedanditshallbecheckedthatthegaugereadstheshimthicknesscorrectlywhentheendofthesliderisincontactwiththeflatsurface.Alternatively,ifaspecialjigissuppliedwiththegauge,themanufacturer'sinstructionsshallbefollowed.

7.2Settingup

Themarkingouttemplateshallbeplacedinpositiononthescreedsurfaceandmarkthelocationsofthegaugefeetthroughthe24holesusingamarkerpen.Thelocationsofthetworestrainingpinsshallbemarkedthroughtheholesonthebarofthetemplate.Thetemplateshallberemoved,thetestreferencenumbershallbewrittenonthespecimenatthecentreofthetestareaandthenumberofthegaugepositions1to8shallbemarkedonthespecimen.Themarksandnumbersshallbecapableofbeingclearlyseenbeforeandafterthetestiscarriedout.

Thedepthgaugeshallbeplacedaccuratelyateachofthe8measuringpositionsonthespecimenandtheinitialreadingsshallberecordedtothenearest10m.

Twonominal10mmdiameterrestraining-pinholesshallbedilledatthemarkedpositions.Thedebrisanddustshallberemovedwithabrushorbyvacuuming.

Thetestmachineshallbeassembledatthetestlocationandtherestrainingpinsshallbeinsertedthroughthefeetintotheholesinthetestspecimen.Itshallbecheckedthattheabrasionheadisfreetorotate.

Thetestspecimenwiththemachineattachedmay,ifrequired,beplacedontoabedofsandorotherconformablematerialsuchthatitisfullysupportedandcannotmovelaterally.

7.3Testoperation

Thetestshallb

7

EN13892-4:2002(E)

Therestrainingpinsshallberemovedandthetestmachineshallbemovedawayfromthetestposition.Anydustordebriscreatedbythetestshallberemovedbybrushingorvacuuming.

Thedepthgaugeshallbeplacedaccuratelyateachofthe8measuringpositionsonthespecimenandthereadingsshallberecordedtothenearest10m.

Themeandepthofwearshallbecalculated,e.g.thewearresistanceBCA,usingfollowingequation:

AR=dw-d

Theresultshallbeexpressedtothenearest10m.

Somescreedsurfacesmaybesubjecttolittleornowearfromthetest.Inthosecircumstancesthedepthreadings

maybeofthesameorderastheaccuracyofthedepthgauge(10m)andasslighterrorsmayoccurin

repositioningthedepthgauge,valueslowerthanthezeroreadingmaysometimesoccur.Wherethisoccursthedepthofwearshouldberecordedaszeroandnotasanegativevalue.

Aphotographofthewearpatternverticallyfromabovemaybetakentoprovideinformationontheabradedsurface.

8Testreport

Thetestreportshallincludethefollowinginformation:

a)number,titleanddateofissueofthisEuropeanStandard;

b)nameandaddressofthelaboratorycarryingoutthetestsandnameandaddressofthelaboratorypreparingthesamples(ifdifferent);

c)identificationnumberofthetestreport;

d)nameandaddressofthemanufacturerorsupplieroftheproduct;e)nameandidentificationmarksorbatchnumberoftheproduct;

f)dateofsupplyoftheproduct;

g)methodofsampling(byreferencetoEN13892-1)andbywhichorganisation;h)place,dateandtimeofsampling;

i)identificationofthescreedsamples,includingtype,originanddesignationofthescreedmaterialbyreferencetotherelevantproductstandardEN13813;

j)preparation(mixing,casting,preparationofthesubstrate,useofthebondingagent,ifappropriate)andstorage(curing)conditionsbyreferencetoEN13892-1;

k)dateandtimeofpreparingspecimensfortest(i.e.dateandtimeofanymixing,casting,mouldingordemouldingprocedure,ifappropriate);

l)ageofscreedmaterialwhentested;m)testmet

8

EN13892-4:2002(E)

n)dateoftestandtheidentificationnumberoftheapparatusordetailsofthetestequipmentused,includingthemake,typeandcapacityandthecalibrationsdetails;

o)testresultsstatedtothenearest10μm;p)remarks;

q)dateoftestreportandsignature.

NOTEAphotographofthewearpatternofeachtestmayaccompanythetestreport

9

EN13892-4:2002(E)

Dimensionsinmillimetres

Key

a)Abrasiontestmachineb)Wheelarrangement

c)markingouttemplate

1)24holesspacedtosuittripodlegsofthedepthmeasuringdevice2)2holeswithadiameterof10mmspacedtosuitlegsofframe

Figure1-BCAabrasiontestmachine,wheelarrangementandmarkingouttemplate

BSEN

13892-4:2002

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