1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 14654:1999 ICS 77.
2、140.15 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Epoxy-coated steel for the reinforcement of concreteThis British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and come
3、s into effect on 15 February 2000 BSI 02-2000 ISBN 0 580 35824 0 BS ISO 14654:1999 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard reproduces verbatim ISO 14654:1999 and implements it as the UK national standard. It supersedes BS 7295-1:1990 which i
4、s withdrawn. The UK participation in its preparation was entrusted by Technical Committee ISE/9, Steel for concrete reinforcement, to Subcommittee ISE/9/1, Bars, wire and fabric for concrete reinforcement, which has the responsibility to: aid enquirers to understand the text; present to the responsi
5、ble international/European committee any enquiries 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. A list of organizations represented on this subcommittee can be obtained on re
6、quest 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 “International Standards Correspondence Index”, or by using the “Find” facility of
7、 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 British Standard does not of itself confer immunity from legal obligations.
8、Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 30, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.Referencenumber ISO14654:1999(E) IN
9、TERNATIONAL STANDARD ISO 14654 Firstedition 1999-12-01 Epoxy-coatedsteelforthereinforcementof concrete Armatures en acier pour bton arm avec revtement poxyISO14654:1999(E) ii ISO14654:1999(E)iii Contents Page Foreword.iv 1 Scope1 2 Normativereferences1 3 Termsanddefinitions.1 4 Materials.3 5 Surface
10、preparationofsteelreinforcingbar,wireandweldedfabric4 6 Applicationofpowder.5 7 Requirementsforcoatedsteelreinforcingbar,wireandweldedfabric5 8 Permissiblecoatingdamageandrepairofdamagedcoating6 9 Manufacturerscertificate.7 10 Handling,storageandidentification7 AnnexA(normative)Testmethodsandfrequen
11、cyoftests,andretests8 AnnexB(informative)Guidelinesforsitepractice11 AnnexC(informative)Qualityassuranceandtestproceduresduringtheproductionofepoxy-coated steelreinforcement13 AnnexD(informative)Certificationschemeforepoxy-coatedreinforcingsteels.25 Bibliography30ISO14654:1999(E) iv Foreword ISO(the
12、InternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepr
13、esentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesg
14、ivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternational
15、Standardmaybethesubjectof patentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO14654waspreparedbyTechnicalCommitteeISO/TC17, Steel, Subcommittee SC 16, Steel for the reinforcement and prestressing of concrete. AnnexAformsanormativepartofthisInterna
16、tionalStandard.AnnexesB,CandDareforinformationonly.INTERNATIONALSTANDARD ISO14654:1999(E)1 Epoxy-coatedsteelforthereinforcementofconcrete 1 Scope ThisInternationalStandardspecifiesrequirementsforfusion-bondedepoxy-coatedpost-fabricatedandpre- fabricatedsteelbar,wireandweldedfabricforthereinforcement
17、ofconcrete. ThisInternationalStandardpermitstheapplicationofeitherflexible(typeA)ornonflexible(typeB)coatings.Steel reinforcingbar,wireandweldedfabriccoatedwithanonflexible(typeB)coatingshallnotbefabricatedafter coating. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,thro
18、ughreferenceinthistext,constituteprovisionsof thisInternationalStandard.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthese publicationsdonotapply.However,partiestoagreementsbasedonthisInternationalStandardareencouragedto investigatethepossibilityofapplyingthemostrecenteditionsoftheno
19、rmativedocumentindicatedbelow.For undatedreferences,thelatesteditionofnormativedocumentreferredtoapplies.MembersofISOandIECmaintain regitersofcurrentlyvalidInternationalStandards. ISO2808:1997, Paints and varnishes Determination of film thickness. ISO4287:1997, Geometrical Product Specifications (GP
20、S) Surface texture: Profile method Terms, definitions and surface texture parameters. ISO6935-1:1991, Steel for the reinforcement of concrete Part 1: Plain bars. ISO6935-2:1991, Steel for the reinforcement of concrete Part 2: Ribbed bars. ISO6935-3:1992, Steel for the reinforcement of concrete Part
21、3: Welded fabric. ISO10544:1992, Cold-reduced steel wire for the reinforcement of concrete and the manufacture of welded fabric. ISO14656: 1) , Epoxy powder and sealing material for the coating of steel for the reinforcement of concrete. 3 Termsanddefinitions ForthepurposesofthisInternationalStandar
22、d,thefollowingtermsanddefinitionsapply. 3.1 batch productionunitofepoxypowder 1) Tobepublished.ISO14654:1999(E) 2 3.2 bundle twoormorelengthsproperlyboundtogether 3.3 coatedbar steelreinforcingbarwhichhasbeencoatedwithafusion-bondedepoxycoating 3.4 coatedwire straightenedsteelwirewhichhasbeencoatedw
23、ithafusion-bondedepoxycoating 3.5 coatedweldedfabric sheetofsteelweldedfabricwhichhasbeencoatedwithafusion-bondedepoxycoating 3.6 coatingline strand(deprecated) onelength-coatingprocesslineinamultiple-linesteelreinforcingbarcoatingplant 3.7 conversioncoating preparationoftheblastedmetalsurfacepriort
24、ocoatingapplicationwhichisdesignedtopretreatthemetal, promotecoatingadhesion,improvecorrosionresistanceandincreaseblisterresistance 3.8 disbonding lossofadhesionbetweenthefusion-bondedepoxycoatingandthesteelreinforcingbar,wireorweldedfabric 3.9 fabricator anyorganizationwhichcutsand/orbendscoatedste
25、elreinforcingbar,wireorweldedfabric 3.10 fusion-bondedepoxycoating coatingcontainingpigments,thermosettingepoxyresins,crosslinkingagentsandotheradditives,whichhavebeen appliedintheformofapowderontoaclean,heatedmetallicsubstrateandfusedtoformacontinuousbarrier 3.11 holiday discontinuityinacoatingwhic
26、hisnotdiscernibletoapersonwithnormalorcorrectedvision 3.12 length pieceofnominallystraightsteelreinforcingbarcuttoaspecifiedlength 3.13 longitudinalrib uniformcontinuousribparalleltotheaxisofthesteelreinforcingbar 3.14 manufacturer anyorganizationwhichproducescoatedsteelreinforcingbars,wireorweldedf
27、abric 3.15 post-fabricatedreinforcement steelreinforcingbar,wireorweldedfabricthatisfabricatedafterbeingcoatedwithafusion-bondedepoxycoatingISO14654:1999(E)3 3.16 pre-fabricatedreinforcement steelreinforcingbar,wireorweldedfabricthatisfabricatedbeforebeingcleanedandcoatedwithafusion-bonded epoxycoat
28、ing 3.17 sealingmaterial acoatingsystem,formulatedtobecompatiblewiththefusion-bondedepoxycoating,usedtorepairdamaged areasandcutends 3.18 testunit thequantityofcoatedreinforcingsteeltobeacceptedorrejectedtogether,onthebasisoftheteststobecarried outonsampleproductsinaccordancewiththerequirementsofthe
29、productstandardororder NOTE AdaptedfromISO404:1992. 3.19 transverserib anyribonthesurfaceofthesteelreinforcingbarorwireotherthanalongitudinalrib 3.20 wettingagent materialthatlowersthesurfacetensionofwaterallowingittopenetratemoreeffectivelyintosmalldiscontinuitiesin thecoatinggivingamoreaccurateind
30、icationoftheholidaycount 4 Materials 4.1 Steelreinforcingbars SteelreinforcingbarstobecoatedshallbeinaccordancewithISO6935-1orISO6935-2oranyotherproduct standardasspecifiedbythepurchaser,andshallbefreeofcontaminantssuchasoil,greaseorpaint. NOTE Priortocoating,thesteelreinforcingbarsshouldbeinspected
31、fortheirsuitabilityforcoating.Steelreinforcingbars withsharpedgesontheribs,rolled-insliversorothersurfaceimperfectionsaredifficulttocoatproperly.Thecoatingwilltendto flowawayfromsharpedgesontheribs,rolled-insliversorothersurfaceimperfections,andcouldresultininadequatecoating thicknessatthesepoints.
32、4.2 Steelwireorweldedfabric SteelwireorweldedfabrictobecoatedshallbeinaccordancewithISO10544orISO6935-3oranyotherproduct standardasspecifiedbythepurchaser,andshallbefreeofcontaminantssuchasoil,greaseorpaint. 4.3 Epoxypowder TheepoxypowderuponapplicationshallbeinaccordancewithISO14656.Uponrequest,the
33、purchasershallbe providedwithtestdataforreview. Thepurchasershallbefurnishedwithawrittencertificatethatproperlyidentifiesthebatchdesignationoftheepoxy powderusedintheorder,statesquantity,dateofmanufacture,nameandaddressofthepowdermanufacturerand astatementthatthesuppliedepoxypowderisthesamecompositi
34、onasthatprequalifiedinaccordancewith ISO14656.Themanufactureroftheepoxypowdershallfurnishaninfraredtraceandadifferentialscanning calorimetrytraceofthepowderbatchesusedinpreparingthecoatedsteelreinforcingbars,wireandweldedfabric aspartofthecertificate. Ifspecifiedintheorder,arepresentative0,2kgsample
35、oftheepoxypowdershallbesuppliedtothepurchaser fromeachbatch.Thesampleshallbepackagedinanairtightcontainerandidentifiedbybatchdesignation.ISO14654:1999(E) 4 Theepoxypowdershallbemaintainedinatemperature-controlledenvironmentfollowingthewritten recommendationsofthepowdermanufactureruntilreadyforuse,at
36、whichpointtheepoxypowderwillbegiven sufficienttimetoreachtheapproximateplantambienttemperature.Theepoxypowdershallbeusedwithinthe powdermanufacturerswrittenrecommendedshelflife. 4.4 Sealingmaterial Thecoatingsystem,foruseassealingmaterial,shallbecompatiblewiththefusion-bondedepoxycoating,inertin con
37、crete,andrecommendedbytheepoxypowdermanufacturer.Thesealingmaterialshallbesuitableforrepairing damagedcoatingsatthemanufacturer,fabricatororatthesite,andshallbeinaccordancewithISO14656. Whenspecifiedintheorder,sealingmaterialshallbesuppliedtothepurchaser. 5 Surfacepreparationofsteelreinforcingbar,wi
38、reandweldedfabric Thesurfaceofthesteelreinforcingbar,wireandweldedfabricshallbecleanedbyabrasiveblaststeelgrit.The amountofresidualmillscaleonthecleanedsurfaceshallnotexceed5%whentestedinaccordancewithC.10. Averageblastprofileroughnessdepthreadingsof50mto70m,definedasthearithmeticmeandeviationofthe
39、assesedprofile,R a ,inISO4287:1997,shallbeconsideredsuitableasananchorpattern. NOTE1 Theuseofa“profilometer“typesurfacemeasurementinstrumentwhichmeasuresthepeakcountaswellasthe maximumprofiledepthisrecommended. AsteelgritofRockwellhardnessC55orhigher,suchasGL-25,shallbeused.Preferably100%gritshallbe
40、used. NOTE2 Recycledsteelgritabrasiveshouldbemaintainedsoastominimizecontaminantssuchasoil,saltanddustcaused bytheblastingoperation. Multidirectional,high-pressuredryairknivesshallbeusedafterblastcleaningtoremovedust,gritandotherforeign matterfromthesteelsurface.Theairknivesshallnotdepositoilonthest
41、eelreinforcingbars,wireandwelded fabric. NOTE3 Steelreinforcingbar,wireandweldedfabricfoundtobesaltcontaminatedshouldbecleanedbyacidwashingor othersuitablemethodstoremovecontaminantsfromthesurfacepriortopreheating.Washedsurfacesshouldnotbeallowedto flashrust. Itshallbepermissibleforachemicalwashand/
42、orconversioncoatingofthesteelreinforcingbar,wireandwelded fabricsurfacetobeusedtoenhancecoatingadhesion. NOTE4 Somepowdercoatingsmayrequirepretreatmentofthesteelinaccordancewiththepowdermanufacturers instructions. Thepretreatmentshallbeappliedafterabrasivecleaningandbeforecoating,inaccordancewiththe
43、written applicationinstructionsspecifiedbythepretreatmentmanufacturer. Alternativesurfacepreparationcriteriatotheforegoingmaybeappliedprovided: a) theycanbeshowntogiveagoodorbetterperformancewithrespecttoclause7andC.8toC.11; b) thepreparationproceduresandcriticalmeasuresaredocumented,includingtolera
44、ncelimitswhichcanbe shownnottocompromiseoverallquality; c) theproductisproducedunderaqualityassuranceschemewhichvalidatesa)andb)above.ISO14654:1999(E)5 6 Applicationofpowder Theepoxypowdershallbeappliedtothecleanedandpretreated(ifapplicable)surfaceassoonaspossibleafter surfacetreatmentshavebeencompl
45、eted,andbeforeanyvisible(toapersonwithnormalorcorrectedvision) surfacerustingoccurs.Themaximumtimetoapplicationofcoatingshallbebasedontherelativehumidity(RH)in thecoatingplantaccordingtoTable1: Table1Maximumtimebetweensurfacetreatmentandapplicationofpowder Relativehumidity RH Maximumtime min RHu55%
46、180 55% RHu65% 90 65% RHu75% 60 75% RHu85% 30 Iftherelativehumidityisinexcessof85%,coatingapplicationshallcease,exceptwherethesurfacepreparation, heatingandcoatingprocessisacontinuousoperation. Thepowdershallbeappliedinaccordancewiththewrittenrecommendationsofthemanufacturerofthepowderin thecaseofin
47、itialsteelsurfacetemperaturerangeandpostapplicationcurerequirements.Duringcontinuous operations,thetemperatureofthesurfaceimmediatelypriortocoatingshallbemeasuredusinginfraredguns and/ortemperature-indicatingcrayonsatleastonceevery30min. NOTE1 Theuseofinfraredgunsandtemperature-indicatingcrayonmeasu
48、rementofthecoatedsteelreinforcingbar,wireor weldedfabricisrecommended. NOTE2 Periodicchecksofthecoatingscurebydifferentialscanningcalorimetryisrecommended. NOTE3 Whentwinwiretypesofweldedfabricaretobecoated,anappropriatemethodofcoatingapplicationshouldbe considered. 7 Requirementsforcoatedsteelreinf
49、orcingbar,wireandweldedfabric 7.1 General Nonflexible(typeB)coatingsshallberequiredtomeettheperformancerequirementsofflexible(typeA)coatings withtheexceptionoftherequirementsforcoatingflexibility(7.4). NOTE Somenationalstandardsincludeaqualificationtesttodeterminetherelativebondstrengthofribbedsteel reinforcingbarsinconcrete.IntheUSA,forexample,relativebondstrengthisdeterminedwithbeam-endtestspecimensin accordancewithASTMA944.Inthequalificationtesting,therelativebondstrengthofthecoatedbarsisrequiredtobeatleast 85%oftherelativebondstrengthoftheuncoatedbars.For
