1、BRITISH STANDARD BS EN 12272-3:2003 Surface dressing Test method Part 3: Determination of binder aggregate adhesivity by the Vialit plate shock test method The European Standard EN 12272-3:2003 has the status of a British Standard ICS 93.080.20 BS EN 12272-3:2003 This British Standard was published
2、under the authority of the Standards Policy and Strategy Committee on 21 May 2003 BSI 21 May 2003 ISBN 0 580 41901 0 National foreword This British Standard is the official English language version of EN 12272-3:2003. The UK participation in its preparation was entrusted by Technical Committee B/510
3、 Road materials, to Subcommittee B/510/2, Surface dressing, 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 Eur
4、opean 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. This publication does not purport to include
5、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 international/European committee any enquiries
6、 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, the EN title page, pages 2 to 20, an inside back
7、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. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN122723 January2003 ICS93.080.20 Englishversion SurfacedressingTestmethodPa
8、rt3:Determinationofbinder aggregateadhesivitybytheVialitplateshocktestmethod EnduitssuperficielsMthodedessaiPartie3: Dterminationdeladhsivitliantsgranulatsparmesure delacohsionVialit OberflchenbehandlungPrfverfahrenTeil3: BestimmungdesAdhsionsvermgensvonBindemitteln undGesteinskrnungmitdemSchlagprfv
9、erfahren ThisEuropeanStandardwasapprovedbyCENon21November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational st
10、andardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe offi
11、cial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPE
12、NDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN122723:2003EEN122723:2003(E) 2 Contents page Foreword3 Introduction .4 1 Scope 4 2 Normativereferences 4
13、3 Termsanddefinitions. .5 4 Activeadhesivityandmechanicaladhesion. 5 5 Wettingtemperature . .10 6 Fragilitytemperature . 12 AnnexA (informative) Summaryofthepreparationoftheplatesbeforetesting14 AnnexB (informative) Tablesofresults. 16 AnnexC (informative) Measuresofthefragilitytemperature19 AnnexD
14、informative) PurposeoftheVialitplateshocktest 20EN122723:200 3( E) 3 Foreword This document (EN 122723 :2003) hasbe en prepared by TechnicalCo mmitteeCE N/TC22 7 “Road materials“, the secretariat ofw hich ish eld by DIN. This EuropeanSt andard shall be giventh e status of a nationalst andard, eithe
15、r by publication ofaniden ticaltextor byendorsement,atthel atestbyJuly2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby April 2005. ThisEurop ean Standardis oneofase riesofstan dardsasliste d below: EN1 22721, SurfacedressingTestmethodPart1:Rateofspreadandaccuracyofspreadofbinderand
16、chippings. prEN 122722, SurfacedressingTestmethodPart2:Visualassessmentofdefects. EN1 22723, SurfacedressingTestmethodPart3:DeterminationofbinderaggregateadhesivitybytheVialit plateshocktestmethod. AnnexesA , B,Ca nd D arein formative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandard
17、sorganizationsofthefollowing countriesareboundtoimplementthisEuro peanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,S pain, Sweden,Swi tzerlandandtheUnitedKin gdom.EN122723:2003(E) 4
18、Introduction Theadhesionbetweenbinderandchippingsisthebasisofsuccessfulsurfacedressing.ltisimportantthatthis bondcanbeobtained,initially,atthemomentofconstructionandbeensuredincoolconditionswhenthe adhesivityproblemsbecomedominantbinderwithdampordryanddustychippings.Aknowledgeofadhesivity enablesthe
19、choiceofabinderandaggregatetypeforminimumrisk,especiallyforearlyandlateseasonwork. 1Scope ThisEuropeanStandardspecifiesthemeasurementofthebinderaggregateadhesivity,andtheinfluenceof adhesionagentsorinterfacialdopesanadhesioncharacteristicsasanaidtodesignbinderaggregatesystemsfor surfacedressing.ltis
20、notintendedthatthismethodisusedonsiteforqualitycontrol. ThisEuropeanStandardspecifiesmethodsofmeasurementof: themechanicaladhesionofthebindertothesurfaceoftheaggregate; theactiveadhesivityofthebindertothechippings; theimprovementofthemechanicaladhesionandactiveadhesivitybyaddinganadhesionagenteither
21、intothe massofthebinderorbysprayingtheinterfacebetweenbinderandchippings; thewettingtemperatureofthebindertotheaggregate; thevariationofadhesivitybelowthefragilitytemperature. Thistestmethodissuitablefor: allthehydrocarbonbindersusedforsurfacedressings(e.g.conventionalorpolymermodifiedbinders,fluxed
22、 orcutbackbindersor,conventionalorpolymermodifiedbituminousemulsions); alltheaggregatetypesusedforsurfacedressings; followingaggregateproductsizes: set1:2/5mm,5/8mm,8/11mmand11/16mm; set2:2/6mm,4/6mm,6/10mmand10/14mm. NOTE FurtherinformationconcerningthepurposeofthetestmaybefoundinannexD. 2 Normativ
23、ereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean
24、 Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). ISO48,Rubber,vulcanizedorthermoplastic Determinationofhardness(Hardnessbetween10 IRHDand 100IRHD).EN122723:2003(E) 5 3 Termsanddefinitions Forthepurpose
25、softhisEuropeanStandard,thefollowingtermsanddefinitionsapply. 3.1 activeadhesivity necessarytobonddampchippingsintheirnaturalstate 3.2 mechanicaladhesion necessarytobondthedrychippingswiththeirnaturaldustorfinesmakinganinhibitingscreen 3.3 wettingtemperature lowesttemperatureofthebinderontheplate,ju
26、stpriortoapplyingthechippings,atwhichthenumberofallthe stainedchippingseitherbondedtotheplateorfallen,aftertheshocktest,isatleast90%ofthechippings 3.4 fragilitytemperature lowesttesttemperatureatwhich90%aggregatesremainbondedtotheplate 3.5 testtemperature temperatureatwhichtheplateswiththebinderandt
27、hechippingsareconditionedbeforetheshocktest 4 Activeadhesivityandmechanicaladhesion 4.1Description Therequiredquantityofbinderisheatedtosprayingtemperatureandspreadevenlyanasteelplate.Thetestis performedat(51)C. 50or100gradedchippingsarelaiddownonthebinderandrolledifahotbinderisused. Thepreparedplat
28、eisturnedoverandputon3pointedsupports. Asteelballismadetofall500mmthreetimesontotheplatewithina10speriod. Theadhesivityvalueisdeterminedasthesumofnumberofchippingsremainingbondedtotheplateandthe numberoffallenchippingswhicharestainedbythebinder. NOTE Ifthechippingsaretreatedchemicallyorwashedonsiteo
29、raninterfacialadhesionagent(dope)usedin construction,thenthisshouldbesimulatedinthetestmethod.Ifpolymermodifiedbindersareusedwhichneedspecialsite conditions,e.g.roadtemperatures10Corheatedchippings,thenagainthetestshouldreflecttheseconstraintsandthe reportmodifiedaccordingly,e.g.increasetemperatureo
30、fchippingsto10C. 4.2Apparatus 4.2.1 Flatsteelplates(seeFigure1) Flatsteelplateswitharimof2mmto3mmheightandwithfollowingdimensions: side(2001)mm (2001)mm; thickness(2,00,2)mm. Theplatesshouldbeflatmanufacturedwithatoleranceof0,2mmacrossthetotallengthinanydirection.The maximumtoleranceafterusageshallb
31、e0,5mm.EN122723:2003(E) 6 Dimensionsinmillimetres Figure1Flatsteelplate 4.2.23pointed supports Adevicecomposedofarigidbasewith3pointedsupports,averticalsupportendinginalightlyangledslide (3,00,5)tolaunchtheball,seeFigure2. Key 1 Level 2B a l l Tolerances1mm,exceptfor thesupports:0,2mm theball:0,5mm
32、Figure23pointedsupportsEN122723:2003(E) 7 4.2.3 Steelball Mass(51010)g,diameter(50,00,5)mm. 4.2.4 Rubberwheelroller(seeFigure3) Thicknessofthehardrubber:(152)mm; mass:(251)kg; usefulwidth:(26010)mm(seeFigure3); hardnessoftherubbershallbeShore40/150inaccordancewithISO48. Dimensionsinmillimetres Key 1
33、 Rubberthickness(15 2)mm 2 Rollermass(25 1)kg Figure3Rubberwheelroller 4.2.5Sprayer Forapplyingadhesionagent(dope)asaninterfaciallayerbetweenbinderandchippingsifrequired. 4.2.6Hygrometer Accurateto5%at90%humidity. 4.2.7Balance Accurateto0,1g,rangeatleast1000g.EN122723:2003(E) 8 4.2.8 Climaticchamber
34、s Capableofmaintainingtemperaturesofthesamplestocovertherange(301)Cto(251)Candahumidity greaterthan90%. 4.2.9Oven Capableofheatingchippingsorbindere.g.(505)Cto(1705)C. 4.2.10Auxiliaryitems Spatula; metallicboxwhichcanbehermaticallysealed; basketmadeofametallicgauze; timingdeviceofaccuracyto1s. 4.3Pr
35、ocedure 4.3.1 Preparationofthebinder 4.3.1.1Quantity Thebinderrateofspreadusedforthetestshallbe: 0,7 kg/m 2 whenthechippingsizeis4/6mm; 1,0 kg/m 2 whenthechippingsizesare5/8mm,6/10mmor8/11mm; 1,3 kg/m 2 whenthechippingsizesare10/14mmor11/16mm. Whenabitumenemulsionistested,theabovequantitiesapplytoth
36、eresidualbinderafterbreakingandtotal evaporationofthewatercontent. 4.3.1.2Temperature Atleast0,5kgofbindershallbewarmeduptosprayingtemperaturetypicallyusedonsitetoobtainaneven spread. 4.3.2 Preparationofthechippings 4.3.2.1Quantity 100chippingsshallbeusedwiththesizes4/6mm,5/8mm,6/10mmor8/11mm; 50chi
37、ppingsshallbeusedwiththesizes10/14mmor11/16mm. Whenchoosingchippingsforthesample,anyobviouslyoversized,undersizedorflakychippingsshallberejected. 4.3.2.2 Treatmentformechanicaladhesiontest Putthechippingswiththeirdustandfinesinacartonandplaceitinaventilatedovenat(501)Cfor(241)h. Putthecartoncontaini
38、ngthechippingsintoaboxwhichisthenhermaticallysealedandplacedinatemperature controlledchamberat(51)Cfor(241)h.EN122723:2003(E) 9 4.3.2.3 Treatmentforactiveadhesivitytest Putthechippingswiththeirdustandfinesinabasketmadeofametallicgauzeandplaceitinaclimaticchamber at(51)Cwithrelativehumiditygreatertha
39、n90%for(241)h. 4.3.3 Preparationoftheplates Cleananddrytheplatesbeforeeachtest. Weighouttherequiredquantityofbinderwarmeduptothesprayingtemperatureandapplyittotheplateuniformly withaspatulaaftercheckingwithaspiritlevelthatthesupportishorizontal. Toobtainauniformthicknessofthebinderfilm,theplatemaybe
40、heatedtoamaximumtemperatureof50C,fora maximumperiodof5min. Puttheplatewiththebinderinaclimaticchamberat(51)C,closebythesamples,for(202)min. 4.3.4 Spreadingandrolling(bindersexcludingemulsions) Takethechippingsfromtheclimaticchamberandplacethemevenlyonthebinder. Ifaninterfacialadhesionagent(dope)isus
41、ed,sprayitjustpriortotheapplicationofthechippings. Carryouttherollingwiththerubberrollerbythreepassesinonedirectionandthreepassesinacrosswise direction. 4.3.5 Spreading(emulsions) Takethechippingsfromtheclimaticchamberandplacethemgentlyanduniformlyontotheemulsionbeforeany breakingoftheemulsionoccurs
42、rollingshallnotbecarriedout. Puttheplatewiththeemulsionandchippingsinaforceddraftventilatedclimaticchamberatroomtemperature (between20Cand30C)for(241)h. Thewatercontentistotallyevaporatedwhenconstantmassisachieved.Constantmassisdeemedtobeachieved whenthedifferencebetweensuccessiveweighingsathalfhourlyintervalsdoesnotexceed0,1%ofthemass. 4.3.6Temperatures setting Taketheplateswiththebinderorresidualbinderoftheemulsionandthechippings,andputtheminaclimatic chamberat(51)C,closebythesamples,for(202)min. 4.3.7Implementation Eachtestshallbecarried
