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
