EN 13295-2004 en Products and systems for the protection and repair of concrete structures Test methods Determination of resistance to carbonation《混凝土结构保护和修缮用产品及系统的试验方法 抗碳化作用的测定》.pdf

1、BRITISH STANDARD BS EN 13295:2004 Products and systems for the protection and repair of concrete structures Test methods Determination of resistance to carbonation The European Standard EN 13295:2004 has the status of a British Standard ICS 91.080.40 BS EN 13295:2004 This British Standard was publis

2、hed under the authority of the Standards Policy and Strategy Committee on 12 July 2004 BSI 12 July 2004 ISBN 0 580 44036 2 National foreword This British Standard is the official English language version of EN 13295:2004. The UK participation in its preparation was entrusted by Technical Committee B

3、/517, Concrete, to Subcommittee B/517/8, Protection and repair of concrete structures, 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 Europe

4、an 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 all

5、 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 on

6、 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 15 and a back cover. T

7、he BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13295 May2004 ICS91.080.40 Englishversion Productsandsystemsfortheprotectionandrepairofconcrete s

8、tructuresTestmethodsDeterminationofresistanceto carbonation Produitsetsystmesdeprotectionetderparationdes structuresenbtonMthodesdessaiDterminationde larsistancelacarbonatation ProdukteundSystemefrdenSchutzunddie InstandsetzungvonBetontragwerkenPrfverfahren BestimmungdesKarbonatisierungswiderstands

9、ThisEuropeanStandardwasapprovedbyCENon24March2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybe

10、obtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial ver

11、sions. 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,SwitzerlandandUnitedKingdom. EUROPEA

12、NCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13295:2004:EEN13295:2004(E) 2 Contents Page Foreword. 3 1 Scope .

13、 4 2 Normativereferences . 4 3 Termsanddefinitions. 4 4 Principle. 5 5 Equipment 5 6 Preparation 5 6.1 General. 5 6.2 Mixingandcuring . 6 6.3 Dryconditioning 6 7 Procedure 7 7.1 General. 7 7.2 Standardmeasuringprocedure . 7 7.3 Effectofdenseaggregates 8 7.4 Effectofvoids/porousaggregates/extremevalu

14、esof dmax 8 8 Precisionandreproducibility . . 8 9 Testresultsandtestreports. . 8 AnnexA (normative) Summaryoftemperaturesandhumiditiesforthecuring,conditioningand testingofrepairproductsandsystems . 14 A.1 Curing. 14 A.2 Standardlaboratoryclimate . . 14 Bibliography . 15EN13295:2004(E) 3 Foreword Th

15、isdocument(EN13295:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC104“Concreteand relatedproducts”,thesecretariatofwhichisheldbyDIN. Ithasbeenpreparedbysubcommittee8“Protectionandrepairsofconcretestructures“(SecretariatAFNOR). ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypubli

16、cationofanidentical textorbyendorsement,atthelatestbyNovember2004,andconflictingnationalstandardsshallbewithdrawn atthelatestbyNovember2004. AnnexAisnormative. ThisEuropeanStandardisoneofaseriesdealingwithproductsandsystemsfortheprotectionandrepairof concretestructures.Itdescribesamethodfordetermini

17、ngtheresistancetocarbonationofatestspecimen madefromarepairproductorsystem,excludingapplicationofaprotectivecoatingsystem. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepubli

18、c, Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania, Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,Switzerland andUnitedKingdom.EN13295:2004(E) 4 1Scope ThisEuropeanStandardspecifiesanacceleratedlaboratorymethodformeasu

19、ringtheresistanceagainst carbondioxidepenetrationthroughrepairproductsandsystems,asdefinedinprEN15043.Themethodis basedonmeasurementofthedepthofcarbonationofthesampleinaconcentratedcarbondioxide atmosphereoverafixedtimeinterval.Themethodissuitableforassessingtheperformanceofrepairgrouts, mortarsandc

20、oncreteswithoutaprotectivecoatingsystemapplied. ThemethoddoesnotmeasuretheresistancetoreductioninpHvaluethatmayoccurbyabsorptionofother acidicgases(e.g.SO 2 ,HCl). 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreference,provisionsfromotherpublications. Thesenormativereferenc

21、esarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies(

22、includingamendments). EN1961, MethodsoftestingcementPart1:Determinationofstrength. EN15041:1998, ProductsandsystemsfortheprotectionandrepairofconcretestructuresDefinitions, requirements,qualitycontrolandevaluationofconformityPart1:Definitions. EN10152, MethodsoftestformortarformasonryPart2:Bulksampl

23、ingofmortarsandpreparationoftest mortars. EN1766,ProductsandsystemsfortheprotectionandrepairofconcretestructuresTestmethods Referenceconcretesfortesting. prEN14630:2003, ProductsandsystemsfortheprotectionandrepairofconcretestructuresTestmethods Determinationofcarbonationdepthinhardenedconcretebythep

24、henolphthaleinmethod. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN15041:1998andthe followingapply. 3.1 Carbonation alkalinecomponents(e.g.calciumhydroxide)inthecementpastereactwithatmosphericcarbondioxide,after whichthepHofthemortarorconcreteisreduced. 3

25、.2 CarbonationDepth carbonationdepth( d k )istheaveragedistance,measuredinmm,fromthesurfaceoftheconcreteormortar wherethecarbondioxide(CO 2 )hasreducedthealkalinityofthehydratedcementtoanextentsuchthatan indicatorsolutionbasedonphenolphthaleinremainscolourless.EN13295:2004(E) 5 4Principle Theresista

26、nceoftherepairproductorsystemagainstcarbonationismeasuredbyanacceleratedlaboratory test,wheresamples areexposedtoanatmospherecontaining1%CO 2 atatemperatureof(212) Cand relativehumidity(RH)of(6010)%. NOTE Theconcentrationof1%CO 2 inairdevelopsthesamereactionproductswithhydratedcementasanormal atmosp

27、hereat0,03%CO 2 .Therelativehumidityof(6010)%resultsinthefastestrateofcarbonationofCCandPCC materials. Thecarbonationdepthismeasuredbyapplyingphenolphthaleinindicatoronafreshlybrokenpieceofthe specimen,followingtheproceduresetoutinclause4.2ofprEN14630:2003Thesamespecimenmaybe usedseveraltimestomeasu

28、retheincreaseincarbonationdepthwithtime,byremovingasmallsliceofthe specimenforeachmeasurement. 5Equipment 5.1 Sealedcabinetforspecimenexposure,with provisionforgasinletsandoutletssuchthatauniform flowofCO 2 reachesallpartsofthecabinet. 5.2 Gassupply of1%CO 2 inair,whichshouldbesuppliedinapremixedbot

29、tledform. 5.3 Humiditycontrollerdesignedtomaintain(6010)%RHinsidethecabinetinthepresenceof concretesamplesthatreactwithCO 2 toliberateextramoisture. 5.4 Phenolphthaleinsolutioncomprising1gofphenolphthaleinindicatorinasolutionof70mlethanol and30mldemineralisedwater. 5.5 Concretecuttingtools including

30、ahammerandchiselforbreakingpiecesoffthespecimens. 5.6 Mouldsforproducingspecimensmadefromnonabsorbent,rigidmaterial,notattackedbycement pasteorpolymers. 5.7 Mortarmixer ,inaccordancewithEN1961,or forcedactionpanmixer . 5.8 Compactiontoolsandequipment forrepairgrouts,mortarsandconcretesaccordingtoEN1

31、961or EN10152. NOTE Thecompactionmethodshouldbeinaccordancewiththemanufacturersinstructions. 5.9 Curingandconditioningroom inaccordancewithannexA. 5.10 Measuringequipment, e.g.rulerorcalliper. 6Preparation 6.1General Thetestshallbecarriedoutonrectangularspecimensofvarioussizes.Foragrout,mortarorconc

32、rete,a prismshapedspecimentoEN196140mmx40mmx160mmshallbetheminimumsizeused.Fora concrete,withamaximumaggregatesizeof10 mmtheminimumsizeofspecimenshallbe 100mmx100mmx400mm.EN13295:2004(E) 6 Thetestiscarriedoutontwoparallelsamplesofrepairproductorsystem,andcomparedalongsidetwo samplesofcontrolconcrete

33、. 6.2 Mixingandcuring Unlessotherwiseinstructedbythemanufacturer,usethefollowingmixingtechniqueforpreparingthe specimens. ForPCCandCCmortar,usethemortarmixer( 5.7)settoalowspeed,pouringtheliquidintothebowland addingthedryingredients,mixingforatotalperiodoftwominutes. Forconcretemixesthatcontaincoars

34、eaggregates( 4mm),preparationshallbeinaccordancewith EN1961,usingaconcretemixer( 5.7),orasotherwiseinstructedbythemanufacturer.Where manufacturersinstructionsprecludeuseofpartbagsofmaterial,aconcretemixer( 5.7)orothermethod recommendedbythemanufacturershallbeused. NOTE1 Ithasbeenfoundthatcertaintype

35、sofrepairmortarcanfoamexcessivelyundertheactionofthemortarmixer specifiedinEN1961.Analternativeistouseaconcretemixer( 5.7). Placethemixedmaterialcarefullyintothemoulds,compactingthoroughly.Thespecimensshallbefinished flushwiththesidesofthemouldusingasteelfloat. NOTE2 Theaircontent,strengthanddensity

36、oftheCCandPCCmixesshouldnormallybedeterminedtocharacterise themortarundertest. ThespecimenstobetestedshallbecomparedagainstprismsofreferenceconcretetypeC(0,45),asdefined inEN1766.Noairentrainingadmixtureshallbeusedinthemix.Themouldsshallbeatleast 100mmx100mmx400mmandshallbefilledandcompactedonavibra

37、tingtable. Allspecimensshallbestrippedfromtheirmouldsandthencuredinaccordancewiththerequirementsof annexA.Thesidesofthespecimensshallbefreefromcontaminants(e.g.demouldingagentsorother materials),whichcouldinfluencethecarbonationrate. 6.3Dry conditioning Thetestspecimensandconcretecontrolspecimenssha

38、llbebroughttoanevenmoisturecontentbystorage inthestandardlaboratoryclimatedefinedinannexA,untiltheweightchangeislessthan0,2%ina24hour period. NOTE Thenecessaryperiodofstorageshallbeatleast14days.EN13295:2004(E) 7 7Procedure 7.1General Afterpreparationandconditioning,thespecimensshallbeplacedonknifee

39、dgesupportsinsidethesealed cabinetandexposedtothetestgas,adjustingtheflowratetoprovidepositivepressure. NOTE Thegasflowrateintothechamberwilldependonthesizeofchamberandnumberofspecimensbehavingas CO 2 absorbers.Theflowrateshouldbecheckedandverifiedassatisfactorybyperiodicsamplingofthegasin represent

40、ativeareasofthecabinets,includinglikelystillairpositions. Thedepthofcarbonation( d k )shallbemeasuredforboththetestspecimenandcontrolconcretespecimenat theendoftheDryconditioningperiodandthenafter56daysinthecabinet. Thedepthofcarbonationshallbemeasured,usingtheproceduregiveninprEN14630:2003clause4.2

41、,on freshlybrokenfacesfromeachprism.Foreachmeasurementasliceof15mmminimumthicknessshallbe brokenofftheprismusingthechiselorbolsterandthepiecesprayedwiththephenolphthaleinindicator solution.Measurementofthedepthofcarbonationshallthenbemade(605)minafterspraying.The carbonationdepthforthespecimen( d k

42、)istheaveragedepthonallfoursides,measuredinaccordancewith thefollowingprocedure,withSide1beingthetrowelledface. 7.2Standard measuring procedure 7.2.1 General Theresultshouldproducealevel,pinkcolorationintheuncarbonatedconcreteoneachsideofthespecimen exceptfortheedges,whichareroundedandshouldbeignore

43、dforthemeasurement.Thestandardresultis termedshapeAasshowninFigure1a.Thenormallength( l)oflevelsurfaceshallbenotlessthan30mm. NOTE Greaterdepthsofcarbonationoccurinthecornerareasofspecimens,wherecarbondioxidecanpenetrate fromtwosidesatonce.Thiseffectshouldbeomittedfromthecalculation. Foreachsurfaceinturn,thelengthoflevelsurface( l)shallbedividedintofourequalparts,formingfive points,asshowninFigure1a.Withthehelpofarulerorcalliper