1、BRITISH STANDARD BS EN 12274-5:2003 Slurry surfacing Test method Part 5: Determination of wearing The European Standard EN 12274-5:2003 has the status of a British Standard ICS 93.080.20 BS EN 12274-5:2003 This British Standard was published under the authority of the Standards Policy and Strategy C
2、ommittee on 21 May 2003 BSI 21 May 2003 ISBN 0 580 41903 7 National foreword This British Standard is the official English language version of EN 12274-5:2003. The UK participation in its preparation was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/2, Surface dressin
3、g, sprays and slurry surfacing, 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 Standards which implement international or European publications referred to in this document may be fou
4、nd 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. This publication does not purport to include all the necessary provisions of a contract. Users are resp
5、onsible 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 international/European committee any enquiries on the interpretation, or proposals for change, and keep
6、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, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date displayed in this document indica
7、tes when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN122745 January2003 ICS93.080.20 Englishversion SlurrysurfacingTestmethodPart5:Determinationofwearing MatriauxbitumineuxcoulsfroidMthodedessai Partie5:Dter
8、minationdelusure DnneAsphaltschichtinKaltbauweisePrfverfahrenTeil 5:BestimmungdesVerschleies ThisEuropeanStandardwasapprovedbyCENon21November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwith
9、outanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaC
10、ENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,S
11、weden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN122745:2003EEN122745:
12、2003(E) 2 Contents page Foreword3 1 Scope 3 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Principle4 5 Materials5 6 Apparatus .5 7 Preparationofsample . 9 8 Testprocedure .10 9 Expressionofresults . .11 10 Testreport 12 Bibliography 13EN122745:2003(E) 3 Foreword Thisdocument(EN122745:2003)hasb
13、eenpreparedbyTechnicalCommitteeCEN/TC227“Roadmaterials“,the secretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJuly2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby April2005. T
14、hisEuropeanStandardisoneofaseriesofstandardsaslistedbelow: EN122741, Slurrysurfacing - Testmethods - Part1:Samplingforbinderextraction. EN122742, Slurrysurfacing - Testmethods - Part2:Determinationofresidualbindercontent. EN122743, Slurrysurfacing - Testmethods - Part3:Consistency. EN122744, Slurrys
15、urfacing - Testmethods - Part4:Determinationofcohesionofthemix. EN122745, Slurrysurfacing - Testmethods - Part5:Determinationofwearing. EN122746, Slurrysurfacing - Testmethods - Part6:Rateofapplication. EN122747 1 , Slurrysurfacing - Testmethods - Part7:Shakingabrasiontestinsuitabilityofmineralaggre
16、gatesto slurrymixes. EN122748 1 , Slurrysurfacing - Testmethods - Part8:Visualassessment. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece
17、,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. 1Scope ThisEuropeanStandardspecifiesatestmethodforthedesignofslurrymixbasedonthedeterminationofthe minimumbindercontentofthemixunderwettrackabrasionconditions. ThisEurop
18、eanStandardappliestoslurrysurfacingtobeusedinsurfacelayers. NOTE Forsomecoursemixturestheprecisionispoorduetolossofaggregatescomesup,acommentwillbemadeinthe report. 1 Inpreparation.EN122745:2003(E) 4 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherp
19、ublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditio
20、nofthe publicationreferredtoapplies(includingamendments). EN122743, SlurrysurfacingTestmethodPart3:Consistency. ISO48,Rubber,vulcanizedorthermoplastic Determinationofhardness(Hardnessbetween10 IRHD and100IRHD). 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinition
21、sapply. 3.1 set endofthenonreversibleprocesswhentheemulsioncoalescencetakesplace NOTE1 Thecoalescenceofanemulsionisthenonreversiblephasestartingfromthebeginningofthebreakingofthe emulsiontothetotalsettingwhenthebitumenemulsionrevertstobitumeninpresenceofamineral. NOTE2 Afterthesetofaslurrysurfacing:
22、 itisnotpossibletostirthemixture; freeemulsionduringwashingwithwatercannotbeobserved; anabsorbentpaperisnotstainedwhenpressedslightlyontothesurfaceoftheslurry. 3.2 settime timeelapsedbetweenplacingaslurrysurfacinganditssetting 3.3 quicksettingslurry slurrywithasettimelessthanorequalto30min 3.4 slows
23、ettingslurry slurrywithasettimemorethan30min 4Principle Samplesarepreparedwithdifferentbindercontents.Thesamplesaretestedunderwater,afterwhichthemass lossbyabrasionismeasured. Thetestconsistsofanabrasiveactionoperatedbymeansofahardrubbercylinderwhichexertsaplanetaryside gearrubbingpressure,appliedfo
24、r5min,onthesurfaceofatestsampleofslurrypreviouslyprepared,curedinan oven,andmoistenedbyimmersion. Byusingthisprocedure,theminimumamountofemulsiontowithstandtheabrasiveactionoftrafficisdetermined.EN122745:2003(E) 5 5Materials 5.1 Coarseaggregatesandsand Asufficientamountoftheseparatedaggregatestobeus
25、edintheslurryshallbedriedinanovenat(100 5)Cto reachconstantmass. NOTE Constantmassisdeemedtobeachievedwhenthedifferencebetweensuccessiveweighingsat30minintervals doesnotexceed0,1%ofthemass. 5.2Reactive filler Thefiller,e.g.cementorhydratedlime,shallbedriedinanovenat(110 5)Ctoreachconstantmass. NOTE
26、Constantmassisdeemedtobeachievedwhenthedifferencebetweensuccessiveweighingsat30minintervals doesnotexceed0,1%ofthemass. 5.3Emulsion Theemulsionshallbemanuallyhomogenizedusingaglassrod. 6Apparatus 6.1 Apparatususedforpreparationofsamples 6.1.1 Dryingoven,withaforcedairsystemandaminimumcapacityof80lca
27、pableofmaintainingatemperature of(60 5)Cinthevicinityofthetestsample. 6.1.2Oven ,thermostaticallycontrolledtomaintainatemperatureof(110 5)C. 6.1.3 Climaticchamber ,capableofmaintainingatemperatureof(5 3)Cinthevicinityofthetestsampleand ahumidityof(60 10)%. 6.1.4Balance ,accurateto0,1g. 6.1.5Timing d
28、evice ,accurateto1s. 6.1.6 Ringshaped,annularmetalmoulds,withaninternaldiameterof(279,0 0,5)mmandanexternaldiameter of(295,0 0,5)mm.Theheightsofthesemouldsshallbeasfollows: TypeA (6,3 0,5)mm; TypeB (10,0 0,5)mm; TypeC (13,0 0,5)mm; TypeD (19,0 0,5)mm.EN122745:2003(E) 6 6.1.7 Ladlesorbeakers ,of1l,2l
29、and5lcapacity. 6.1.8 Endroundedspatula,ormetalrod. 6.1.9 Levellingplate ,withastraightedge,chamferedtoasharpedgeononeofitsfacesandhavingahandle. 6.1.10Testpiecebases ,madeofunchippedroofingfelt,ofatleast300 mmdiameterandweighing (700 70)g/m. 6.2 Apparatususedfortesting 6.2.1 Abrasionmachine ,consist
30、ingofanelectricmotorcapableofdrivingaplanetarygearsystemwhichrotates itsverticallymountedabrasionheadaboutitsownaxis,aswellasprovidingaplanetarymotionapplieddirectlyto thetestsample. NOTE Themachineisdesignedtoprovidetheabrasiveheadwitharotatingspeedofabout144min 1 for61complete cyclesoftheplanetary
31、systemwhileexertingaconstantverticalkineticfrictionforceof(22,3 2,0)N. 6.2.2 Testbath ,ofsufficientvolumetokeepthetestsamplesubmergedforthedurationofthetest.Thebottom ofthebathshallbefittedwiththreespindlesdesignedtofixthetestbaseplateinplace. 6.2.3 Testbaseplate ,comprisingathickmetaldiscdiameter(3
32、10 1)mmandthickness(5,0 0,2)mm.The discshallhaveatleastthreeknurledheadscrewfastenersarrangedsymmetricallyonthebaseplateperiphery,in ordertosecurethesampleduringthetest. 6.2.4 Installationoftheabrasionmachine Thetestbaseplateshallbefixedbymeansofdowelstothetestbathbottom.Theabrasionmachineandthetest
33、 bathshouldbefirmlyfixedtogetherbymeansofanappropriatedevicethroughoutthetest. 6.2.5Auxiliary bath ,capableofstoringthetestsamplesat(25 2)Cbeforetesting. 6.2.6Abrasion head ,fittedwithapieceofhose(127 1)mmmadeof80Shorehardnessrubberconformingto ISO48andreinforcedwithadoublecordsurface.Thehoseshallha
34、veaninternaldiameterof(19 0,5)mmand anexternaldiameterofabout31mmandshallbecapableofwithstandingapressureof2,533MPa(standard atmosphere). NOTE1 AdrawingoftheabrasionheadisgiveninFigure1. NOTE2 AnexampleofanapparatusisshowninFigure2.EN122745:2003(E) 7 Dimensionsinmillimetres Key 1 Counterweight 2B r
35、i d l e 3B a s e 4H o s e NOTE Tolerancesforthedimensions:1% Figure1Abrasionhead,massofthefourparts2300gEN122745:2003(E) 8 Figure2ExampleofapparatusEN122745:2003(E) 9 7 Preparationofsample 7.1Conditioning temperature Allmaterialsthataregoingtobeusedinsamplepreparationshallremainforatleast2hbeforetes
36、tingata temperaturegiveninTable1. Table1Conditioningtemperature Slurrytype Conditioningtemperature C Slowsettingslurry Ambienttemperature Quicksettingslurry 5 3 7.2Water content TheproportionofwatershallbepreviouslydeterminedaccordingtoEN122743. 7.3 Aggregatesandfiller Weighaggregatesandfillerinthes
37、ameproportionsasthedesignmixinaccordancewiththeamountinTable2 usingaladleorbeakerandmixwithaspatulauntilahomogeneousmixtureisobtained. Table2Samplesize Maximumaggregatesize mm Amountofaggregatesandfiller g 4,0 5,6 6,3 8,0 1500 10 10,0 11,2 16,0 3000 10 7.4 Waterandadditive Addwaterandadditive(ifnece
38、ssary),andstirthemixtureuntilalltheaggregatesandfillerarecompletelywetted. Thecalciumcarbonatecontentofthewatershallbelessthan250ppm.EN122745:2003(E) 10 7.5Emulsion Addemulsioninanamountasrequiredinthedesignmixtothemixtureandstiritfor(45 1)susingaspatulaor metalroduntilahomogeneousmixtureisobtained.
39、 NOTE Amechanicalmixermaybeused.Howevercareshouldbetakentoensurethatnocomponentisejectedfromthe mixingcontainersduringthemixingprocess. 7.6 Samplesize Theannularmouldsshallbethosecorrespondingtothemaximumsizeoftheaggregateinaccordancewith Table3. Table3Mouldtype Maximumaggregatesize mm Mouldsize 4,0
40、 5,6 A 6,3 8,0 B 10,0 11,2 C 16,0 D NOTE Themouldusedshouldbethesmallestwhoseheightexceedsthemaximumsizeoftheaggregatebyatleast15%. Centrethemouldoverthefeltsupportsandpourtheslurryintothemould.Spreadthesampleandleveltoaflat face.Duringthisoperation,thehandlingoftheslurryshallbeminimizedtoavoidsegre
41、gation. 7.7Curing Themouldscontainingthespecimen,togetherwiththetestbaseplateshallbecuredinanovenat(60 5)C, untilconstantmassisachieved. NOTE Constantmassisdeemedtobeachievedwhenthedifferencebetweensuccessiveweighingsat30minintervals doesnotexceed0,1%ofthemass. 8 Testprocedure 8.1 Aftercuring,remove
42、thetestmouldsampleandbaseplatefromtheovenandallowtocooltoambient temperature.Removethemouldfromthesampleandweighthesampleonabalanceandrecordthemass.EN122745:2003(E) 11 8.2 Submergethetestsampleandbaseplateintheauxiliarywaterbathat(25 2)Cfor60minto75min. 8.3 Submergethetestsampleandbaseplateinthetestbathwhereitisfixedtothediscplatebymeansofthe threescrewfasteners.Fullysubmergethetestsamplethroughoutthetestinwaterof(25 2)C. 8.4 Installtherubberhosepiece,preparedinaccordancewith6.2.7,intheabrasionheadandtestitontothe testsample. 8.5 Runth
