1、BRITISH STANDARD BS EN 12272-1:2002 Surface dressing Test methods Part 1: Rate of spread and accuracy of spread of binder and chippings The European Standard EN 12272-1:2002 has the status of a British Standard ICS 93.080.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN
2、 12272-1:2002 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 27 March 2002 BSI 27 March 2002 ISBN 0 580 39417 4 National fo
3、reword This British Standard is the official English language version of EN 12272-1:2002. The UK participation in its preparation was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/2, Surface dressing, sprays and slurry surfacing, which has the responsibility to: A lis
4、t 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 found in the BSI Standards Catalogue under the section entitled “Internat
5、ional Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Bri
6、tish Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European de
7、velopments 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 29 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publicati
8、on Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN122721 February2002 ICS93.080.20 Englishversion SurfacedressingTestmethodsPart1:Rateofspreadand accuracyofspreadofbinderandchippings EnduitssuperficielsdusureMthodesdessaiPartie1: Tauxdpandageetrgularittransversaleduliantetdes
9、 gravillons OberflchenbehandlungPrfverfahrenTeil1:Dosierung undQuerverteilungvonBindemittelnundSplitt ThisEuropeanStandardwasapprovedbyCENon9November2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstan
10、dardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibi
11、lityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Swi
12、tzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN122721:2002EEN122721:2002(E) 2 C
13、ontents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Determinationoftherateofspreadofbinder. 5 5 Determinationoftherateofspreadofchippings .9 6 Determinationoftheaccuracyofspreadofbinder. .12 7 Determinationoftheaccuracyofspreadofchippings .15 AnnexA (normative) Deter
14、minationoftheaccuracyofspreadofchippings 19 AnnexB (informative) Equipmentrecommendedforuseinthedeterminationoftheaccuracyof spreadofbindertest .21 AnnexC (normative) Determinationoftheaccuracyofspreadofbinder.27 AnnexD (informative) Thepickingframe,usedinthedeterminationoftheaccuracyofspreadof chip
15、pingtest .28EN122721:2002(E) 3 Foreword ThisdocumentEN122721:2002hasbeenpreparedbyTechnicalCommitteeCEN/TC227“Roadmaterials“,the secretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyAugust2002,an
16、dconflictingnationalstandardsshallbewithdrawnatthelatestby June2004. InthisstandardtheannexesAandCarenormativeandtheannexesBandDinformative. ThisEuropeanStandardisoneofaseriesofstandardsaslistedbelow: EN122721, Surfacedressing Testmethods Part1:Rateofspreadandaccuracyofspreadofbinderand chippings. p
17、rEN122722, Surfacedressing Testmethods Part2:Visualassessmentofdefects. prEN122723, Surfacedressing Testmethods Part3:Determinationofbinderaggregateadhesivitybythevialit plateshocktestmethod;GermanversionprEN122723:1997. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationso
18、fthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN122721:2002(E) 4 1Scope ThisEuropeanStandardspecifiest
19、estmethodsfordeterminingtheratesofspreadandaccuracyofspreadof binderandchippingsofasurfacedressingonasectionofroadatagiventime.Itisalsoapplicabletosurface dressingsonairfieldsandothertraffickedareas. Thetestmethodsareusedonsitetochecktheabilityofbindersprayersandchippingspreaderstomeetthe intendedra
20、tesofspreadandtolerancesandcoefficientsofvariation. Thetestmethodsformeasuringtheratesofspreadandaccuracyofspreadofbindersandchippingsarenot applicabletocombinedchippingbinderspreaders. 2 Normativereferences Notapplicable. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsa
21、nddefinitionsapply. 3.1 surfacedressing surfacetreatmentconsistingofthesuccessivelayingofatleastonelayerofbinderandatleastonelayerof chippings 3.2 chippings coarseaggregatewithinanarrowgradingrange,practicallyfreeoffines NOTE Chippingscanhavespecifiedvaluesforstrength,soundness,shape,polishingresist
22、ance,resistancetoabrasion, purity,durabilityandaffinitytobituminousbinder. 3.3 rateofspreadofbinder averagemassofbinderinkilogramspersquaremetre(kg/m),appliedtotheroadsurfacewhenmeasuredin accordancewiththisEuropeanStandard 3.4 rateofspreadofchippings averagebulkvolumeinlitrespersquaremetre(l/m)or,m
23、assinkilogramspersquaremetre(kg/m)appliedtothe roadsurface,whenmeasuredinaccordancewiththisEuropeanStandard 3.5 proportionalrange differencebetweenthemaximumandminimumindividualvaluesofratesofspreadofbinderorchippings determineddividedbythemeanvalue,usingthetestmethodsinthisEuropeanStandard 3.6 accu
24、racyofspreadofbinder coefficientofvariationofthemassofbinderappliedtotheroadsurfacewhenmeasuredinaccordancewiththis EuropeanStandard.Thevalueandgraphindicatetheabilityofthesprayertoapplybinderevenlyacrosstheroad 3.7 accuracyofspreadofchippings coefficientofvariationofthemassofchippingsappliedtothero
25、adsurfacewhenmeasuredinaccordancewiththis EuropeanStandard.Thevalueandgraphindicatetheabilityofthechippingspreadertoapplythechippingsevenly acrosstheroadEN122721:2002(E) 5 4 Determinationoftherateofspreadofbinder 4.1Principle Samplesofthebindersprayedbythebindersprayerarecollectedtodeterminetheavera
26、gerateofspread.Atleast fivetrays,boardsortilesareused,eachwithaminimumareaof0,1m 2 andhavingaminimumcombinedareaof 0,5m 2 ,spacedevenlyacrossthefullwidthoftheroadtobesprayed.Alternatively,acontinuousstripoftilesor boardsabuttingeachotherisarrangedacrossthisentirewidth. 4.2Apparatus 4.2.1Trays Rectan
27、gulartraysofmetalorothermaterialsufficientlyrobusttoresistdeformationinuse.(Steelplate2mmthick issuitable). NOTE Thetrayscancontainanabsorbentmaterialtoinhibitbinderflow. Theinternaldimensionsofeachtrayinmillimetres(mm)shallbethefollowing: Sidelength (2502)mmto(5002)mm; Height (52)mmto(102)mm. Aseto
28、ftraysusedforatestshallnotvaryinsidedimensionsbymorethan10mmfromeachother. 4.2.2 Tilesorabsorbentfibreboards Rectangularcarpettilesorabsorbentfibreboards,sufficientlyabsorbenttoholdatleast1,5timesthespecifiedrate ofbinderwithoutlossofbinder,e.g.flowingoffwhilstsprayingortransferringtobagsorpenetrati
29、onthroughthetile orboard. Thedimensionsofthetilesorboards(exposedareatocollectbinder)inmillimetres(mm)shallbethefollowing: Sidelength (250+2)mmto(500+2)mm; Thickness maximum25mm. Thetilesorboardsmaybelargerthanthemaximumdimensionbutshallbemaskedbytapetogivethemaximum dimension. Asetoftraysusedforate
30、stshallnotvaryinsidedimensionsbymorethan10mmfromeachother. 4.2.3Ruler Ruler,withaminimumlengthof500mmtomeasurethedimensionofthetrays,boardsortilestothenearest 1mm.EN122721:2002(E) 6 4.2.4 Portablebalance Portablebalance,readableto0,1gandofsufficientcapacitytoweighonetraywith1,5xthemaximumrateof spre
31、adofbinder. 4.2.5 Plasticbags Plasticbags,lightweightandcapableofcontainingthebinderandtrayorboardortileforweighingwithoutanyloss byleakageorevaporation. 4.2.6Tape Adhesivetape,usedtoholdthetrays,boardsortilestotheroadandtomaskthemtotherequireddimensions. Whenremoved,thetapeshallnotdamagethemaskedpa
32、rtsofabsorbentboardsofcarpettilessoastoensure thereisnolossinmassoftheunderlyingmaterial. 4.3Procedure 4.3.1 Preparationofthetrays,carpettilesorabsorbentfibreboard Markthetraysorcarpettilesorabsorbentfibreboardswithanindelibleidentification.Insertanabsorbentmaterial asalinerintoeachtray.Weighthetray
33、s,thecarpettilesorabsorbentfibreboardstogetherwithaplasticbag,to thenearest1gandrecordthesemassesasthemassofeachsamplingdevicebeforespraying. 4.3.2 Locationandplacementofthetray,carpettilesorabsorbentfibreboard Thetestsiteshallbeatleast30mfromthestartofthesprayingoperation. Spacethetrays,carpettiles
34、orabsorbentfibreboardsacrossthewidthofroadwhichistobesprayedwithbinder, andatleast200mmfromtheedgeasshowninFigure1.Ifadhesivetapeisusedtosecurethecarpettilesor absorbentfibreboardtotheroadduringspraying,measurethelengthandwidthofeachoftheareasexposedto thebinderspraytothenearest5mmforthecalculationo
35、ftheexposedarea. NOTE1 Whentheratesoftransversedistributionareintentionallydifferentin thesame transverse profile then the trays, boardsorcarpettilesrelatedtothesamemeasurementshouldbeplacedinareaswheretheintendedrateofspreadisthe same. NOTE2 Careshouldbetakentoensurethatwhenspraycurtainsarebeinguse
36、d,toavoidtouchingthetrays,boardsortiles.EN122721:2002(E) 7 Figure1Traysorcarpettilesorabsorbentfibreboards,diagrammatic 4.3.3 Removalandweighingofthetrays,carpettilesorabsorbentfibreboards Within3minofthebinderbeingsprayedontotheroad,butbeforeanychippingsareapplied,removethetrays, carpettilesorabsor
37、bentfibreboardfromtheroadsurface.Careshallbetakennottoloseorgainanybinder.Then inserteachsamplingdeviceintoitsownplasticbagbeforeweighingittothenearest1g.Recordthemassofeach samplingdeviceafterspraying. 4.4Expression of results Calculatethebindermass: 1i 2i i M M M (1) where M i isthebindermassretai
38、nedonthesamplingdevice,expressedinkilograms(kg); M 2i isthemassofthesamplingdeviceafterspraying,expressedinkilograms(kg); M 1i isthemassofthesamplingdevicebeforespraying,expressedinkilograms(kg); Calculatetherateofspread: i i i A M d (2) where d i istherateofspreadofbinder,expressedinkilogramspersqu
39、aremetre(kg/m 2 ),foreachsampling device; M i isthebindermassretainedonthesamplingdevice,expressedinkilograms(kg); A i istheareaofsamplingdeviceexposedtothebinderspray,expressedinsquaremetres(m). SprayingDirection Maximum500 Minimum250 Maximum500 Minimum250 Minimum5trays,boardsortiles Maximum25 thic
40、kness Tape Area A i Foamsheetor absorbent materialinsert Metaltray Maximum10 Minimum200 Edgeofspray DimensionsinmillimetresEN122721:2002(E) 8 Calculatethemeanrateofspreadofthebinder: N d d d d d d D ) . ( N 5 4 3 2 1 (3) where D isthemeanrateofspreadofbinder,expressedinkilogrampersquaremetre(kg/m 2
41、),reportedto thenearest0,05kg/m 2 ; d 1 tod N aretheratesofspreadofbinderoneachsamplingdevice; N isthenumberofsamplingdevicesusedinthetest. Calculatetheproportionalrange: D d d P ) ( min max R (4) where P R istheproportionalrange; d max isthehighestrateofspreadofbinderfoundonanindividualsamplingdevi
42、ce; d min isthelowestrateofspreadofbinderfoundonanindividualsamplingdevice. Repeatthetestiftheproportionalrangeisgreaterthan0,20. NOTE Ifthisrecursitindicatesthatameasurementofthetransversedistributioncanbenecessary(seeclause6). 4.5 Testreport Thetestreportshallcontain: a) astatementthatthetesthasbe
43、enperformedinaccordancewiththisEuropeanStandard; b) identificationofsprayerandspraybarused; c)spraybar height; d)spraybar width used; e) locationofsitetest; f) dateoftest; g) climaticconditionslikelytoaffectthetestresult(e.g.windy,etc.); h) bindertemperaturerecordedfromthetank; i)binder type; j) specifiedrateofspreadandtolerance; k) resultsascalculatedin4.4; l)any remarks; m) nameandsignatureofthepersonresponsibleforconducting
