1、BRITISH STANDARD BS EN 1062-7:2004 Paints and varnishes Coating materials and coating systems for exterior masonry and concrete Part 7: Determination of crack bridging properties The European Standard EN 1062-7:2004 has the status of a British Standard ICS 87.040 BS EN 1062-7:2004 This British Stand
2、ard, was published under the authority of the Standards Policy and Strategy Committee on 28 May 2004 BSI 28 May 2004 ISBN 0 580 43821 X National foreword This British Standard is the official English language version of EN 1062-7:2004. The UK participation in its preparation was entrusted to Technic
3、al Committee STI/28, Paint systems for non-metallic substrates, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred t
4、o 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 all the necessary provisions
5、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 on the interpretation, or pr
6、oposals 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 31 and a back cover. The BSI copyright notice di
7、splayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN10627 May2004 ICS87.040 Englishversion PaintsandvarnishesCoatingmaterialsandcoatingsystems forexteriormasonryandconcretePar
8、t7:Determinationof crackbridgingproperties PeinturesetvernisProduitsdepeintureetsystmesde revtementpourmaonnerieetbtonextrieursPartie7: Dterminationdelarsistancelafissuration BeschichtungsstoffeBeschichtungsstoffeund BeschichtungssystemefrmineralischeSubstrateund BetonimAuenbereichTeil7:Bestimmungde
9、r rissberbrckendenEigenschaften ThisEuropeanStandardwasapprovedbyCENon24March2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcer
10、nings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariatha
11、sthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,Swit
12、zerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN10627:2004:EEN10627:2004(E) 2 Con
13、tents Foreword. 4 1 Scope . 6 2 Normativereferences . 6 3 Termsanddefinitions. 6 4 Principle. 7 5 Apparatus 7 6 Sampling 7 7 Testpieces. 8 7.1 Substrate 8 7.2 Numberanddimensions . . 8 7.3 Coatingandconditioningofthesubstrates 8 7.4 Crackingofthetestpieces . . 8 8 Procedure 8 8.1 Preparationofthetes
14、tapparatus. . 8 8.2 Testtemperature . 9 8.3 Measurementofthecrackbridgingpropertiesofthecoating 9 8.3.1 Preparation 9 8.3.2 MethodA:Continuousopeningofthecrack. 9 8.3.3 MethodB:Cyclicopeningofthecrack . . 9 9 Expressionofresults . 9 9.1 MethodA:Continuousopeningofthecrack. 9 9.2 MethodB:Periodicalch
15、angeofthecrackwidth .9 10 Precision 9 11 Testreport . 9 AnnexA (normative) CrackbridgingpropertiesClassificationandtestconditionsformethodA 11 AnnexB (normative) CrackbridgingpropertiesClassificationandtestconditionsformethodB. 12 AnnexC (informative) Examplesofsuitabletestprocedures . 15 C.1 Static
16、tensiletest . . 15 C.1.1 Principle. 15 C.1.2 Testpieces. 15 C.1.3 Procedure 16 C.2 Staticbendingtest. . 18 C.2.1 Principle. 18 C.2.2 Testpieces. 18 C.2.3 Procedure 20 C.3 Dynamictensiletest1 20 C.3.1 Principle. 20 C.3.2 Testpieces. 20 C.3.3 Procedure 22 C.4 Dynamictensiletest2 23 C.4.1 Principle. 23
17、 C.4.2 Testpieces. 23 C.4.3 Procedure 24 C.5 Dynamictensiletest3 25 C.5.1 Principle. 25EN10627:2004(E) 3 C.5.2 Testpieces . 25 C.5.3 Procedure .25 C.6 Dynamicbendingtest .28 C.6.1 Principle28 C.6.2 Testpieces . 28 C.6.3 Procedure .29 Bibliography31EN10627:2004(E) 4 Foreword Thisdocument(EN10627:2004
18、)hasbeenpreparedbyTechnicalCommitteesCEN/TC104“Concreteand relatedproducts”andCEN/TC139“Paintsandvarnishes”,thesecretariatsofwhichareheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyNovember2004,andconflictingna
19、tionalstandardsshallbewithdrawn atthelatestbyNovember2004. EN1062, PaintsandvarnishesCoatingmaterialsandcoatingsystemsforexteriormasonryandconcrete , consistsofthefollowingparts: Part1:Classification Part3:Determinationandclassificationofliquidwatertransmissionrate(permeability) Part6:Determinationo
20、fcarbondioxidepermeability Part7:Determinationofcrackbridgingproperties Part11:Methodsofconditioningbeforetesting AnnexesAandBarenormative.AnnexCisinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandar
21、d:Austria,Belgium,Cyprus,CzechRepublic, Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania, Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerland andUnitedKingdom.EN10627:2004(E) 5 Introduction Thisisoneofanumberofpar
22、tsofEN1062dealingwithtestmethodsforcoatingmaterialsandcoating systemsformasonryandconcrete.EN10627:2004(E) 6 1Scope ThisEuropeanStandardspecifiestwomethodsfordeterminingthecrackbridgingpropertiesofcoating materials,coatingsystemsandrelatedproducts,intendedforexteriormasonryandconcrete.Itshouldbe rea
23、dinconjunctionwithEN10621andprEN15042. Italsogivesaclassificationofcoatingsonthebasisoftheircrackbridgingproperties. NOTE Themethodtobeusedforaparticularproductorsystemshouldbeagreedbetweentheinterestedparties. 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreference,provisio
24、nsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe
25、latesteditionofthepublicationreferredtoapplies(includingamendments). EN1961, MethodsoftestingcementPart1:Determinationofstrength. EN9711:1996 ,PaintsandvarnishesTermsanddefinitionsforcoatingmaterialsPart1:Generalterms. EN106211,PaintsandvarnishesCoatingmaterialsandcoatingsystemsforexteriormasonryand
26、 concretePart11:Methodsofconditioningbeforetesting. EN1766:2000, ProductsandsystemsfortheprotectionandrepairofconcretestructuresTestmethods Referenceconcretesfortesting. ENISO1513, PaintsandvarnishesExaminationandpreparationofsamplesfortesting(ISO1513:1992). ENISO15528, Paints,varnishesandrawmateria
27、lsforpaintsandvarnishesSampling(ISO15528:2000). 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply. 3.1 coatingsystem sumtotalofthecoatsofcoatingmaterialswhicharetobeappliedorwhichhavebeenappliedtoasubstrate EN9711:1996 3.2 crack firstvisibleormeasurablef
28、ailurethroughthecoating,coatingsystemorsubstrate 3.3 crackbridging abilityofthecoatingorcoatingsystemtotakeuptheelongationresultingfromthemovementofthecrack sides(3.4) 3.4 cracksides surfacesofthebreakinthesubstratethataregeneratedwhenthesubstrateismarkingthecrackEN10627:2004(E) 7 3.5 crackwidth mea
29、ndistanceofthecracksides(3.4)measuredonthesurfaceofthesubstrate 3.6 nominalcrackpoint placeinthesubstratewherethecrackwilloccur 3.7 substrate surfacetowhichacoatingmaterialisappliedoristobeappliedEN9711:1996 4Principle Aftercoatingthesubstrate,adefinedcrackismadeinthesubstrateatanominalcrackpoint.Th
30、eapplied coatingisstretchedoverthiscrack.Themechanicalstressisappliedtothecoatingusingoneofthefollowing methods: MethodA:Thecrackwidthiscontinuouslyenlargedatadefinedspeed.Themeasurementistakenwhen eitherfailureoccursinthecoatingorcoatingsystemorwhentherequiredcrackwidthisreached. MethodB: Thecrackw
31、idthvariesperiodicallywithindefinedlimits.Themeasurementistakenwheneither failureoccursinthecoatingorthecoatingsystemorthedynamiccycleiscompleted. Thecrackbridgingpropertiescanbedeterminedatdifferenttemperatures. AnnexesAandB,respectively,specifytestconditionsformethodsAandBandlaydownclassesforthe c
32、rackbridgingpropertiesonthebasisoftherespectivetestconditions.AnnexCdescribesexamplesof suitabletestprocedureswhichmeetthefurtherrequirementsspecifiedformethodsAandB. 5Apparatus Thetestapparatusforchangingandcontrollingthecrackwidthatspecifiedtemperaturesshallensurethatthe movementofthecracksliesbet
33、weengivenlimits,andthatshearing(horizontalandverticalmovement)ofthe cracksidesisavoidedduringthedetermination. Itshallbeprovidedwithadeviceformaintainingthetemperatureatwhichthedeterminationofthecrack bridgingpropertiesistobecarriedout.Thetoleranceofthetesttemperatureshallbe2K. Devicesformeasuringth
34、ecrackwidth,e.g.extensionmeasuringstriporinductivepathfinder,accurateto 5m,shallbeprovided.Thesemeasuringdevicesshallbesuitabletomonitorthechangeofthecrackwidth duringthetest(8.3.2and8.3.3). 6Sampling Takearepresentativesampleoftheproducttobetested(orofeachproductinthecaseofamulticoat system),asdesc
35、ribedinENISO15528. Examineandprepareeachsamplefortesting,asdescribedinENISO1513.EN10627:2004(E) 8 7 Testpieces 7.1 Substrate Thesubstrateshallconsistofeither: concretecomplyingwiththerequirementsofEN1766,usingatestmortarMC(0,45)withanaggregatesize0 mmto8mm, or: mortarcomplyingwiththerequirementsofEN
36、1961,usingatestmortarwith0mmto2mmstandardsand andCEMI42,5R. Bothtypesofsubstrateshallpreparedasdescribedin6.4and6.5ofEN1766:2000. StorethesesubstratesinaccordancewithEN106211foratleast7daysat(212)Cand(6010)% relativehumidity. Ifspecified,carryoutasurfacepreparation,eitherusingametallicbrushorbyabras
37、iveblastingin accordancewithEN1766,usinggritabrasive. Othersubstratesandtheirpreparationcanbeagreedbetweentheinterestedparties. 7.2 Numberanddimensions Usually,threetestpiecesareused.ThepreparationanddimensionsofthetestpiecesaregiveninannexC. NOTE Testpiecesoflargerdimensionsfacilitatetheapplication
38、ofthecoatingunderpracticalconditionsandamore uniformfilmthicknesswillbeachieved. 7.3 Coatingandconditioningofthesubstrates BeforecoatingmeasuretheroughnessindexinaccordancewithEN1766. Forpreparationofthetestpieces,coatthesubstrateandcurethetestpieceinaccordancewiththe manufacturersinstructions. Cond
39、itionthetestpiecesinaccordancewithEN106211priortotesting.Theconditioningmethodshallbe agreedbetweentheinterestedpartiesandstatedinthetestreport. 7.4Crackingofthetestpieces Makeanimmediatecrackintothecoatedsubstrateofthetestpieceat23C(seeannexC).Thecrackwidth shallbe 100m.Thenominalcrackpointshallbei
40、nthemiddleofthelengthofthetestpieces. 8Procedure 8.1Preparationofthetestapparatus Mountthedevicesformeasuringthecrackwidthontothetestpieceonbothsidesofthecrack.Alignthetest pieceinthetestapparatusinsuchamannerthattherelativemovementofthetestpieceandtheapparatusis negligibleinrelationtothecrackmoveme
41、nt.EN10627:2004(E) 9 NOTE1 Ifnecessary,thedeviceformeasuringthecrackwidthmaybemountedtothemovablepartsofthetest apparatus. NOTE2 Thetestpiececanbemounteddirectlyinthetestapparatusorbefixedintheapparatus,e.g.withsteelclips fixedonthesurfaceorwithreinforcementbarsinthesubstrate. 8.2Testtemperature Con
42、ditionthetestpiecesatthetesttemperaturespecifiedinannexAorB(see8.3)priortotestingandstart themeasurementwhenthetestpiecesandthetestapparatushavestabilizedatthetesttemperature. 8.3Measurementofthecrackbridgingpropertiesofthecoating 8.3.1Preparation Applyforcetothetestpieceinthetestapparatus,following
43、theproceduresdescribedin8.3.2or8.3.3 respectively. 8.3.2 MethodA:Continuousopeningofthecrack Openthecrackcontinuouslyatthetesttemperatureuntilthecoatingshowsfailure,usingaspeedof0,05 mm/minor0,5mm/min(seeannexA). 8.3.3 MethodB:Cyclicopeningofthecrack ChangeperiodicallythecrackwidthatthetesttemperatureasdefinedinannexB.Thecurveisdefinedby frequency f,amplitude w/2andmeanwidthofthecrack. Themeasurementwillbefinishedwhenacrackinthecoatingorcoatingsystemsoccursorthedynamiccycle isfinished
