1、BRITISH STANDARD BS EN 14068:2003 Products and systems for the protection and repair of concrete structures Test methods Determination of watertightness of injected cracks without movement in concrete The European Standard EN 14068:2003 has the status of a British Standard ICS 91.080.40; 91.100.30 B
2、S EN 14068:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 12 December 2003 BSI 12 December 2003 ISBN 0 580 43092 8 National foreword This British Standard is the official English language version of EN 14068:2003. The UK participation
3、in its preparation was entrusted by Technical Committee B/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
4、British Standards which implement international or European 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
5、 Online. This publication does not purport to include all 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 resp
6、onsible 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. Summary of pages This document comprises a front cover, an inside front co
7、ver, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14068 December2003 ICS91.080.40;91.100.30
8、 Englishversion Productsandsystemsfortheprotectionandrepairofconcrete structuresTestmethodsDeterminationofwatertightnessof injectedcrackswithoutmovementinconcrete Produitsetsystmespourlaprotectionetlarparationdes structuresenbtonMthodesdessaiDterminationde ltanchitleaudesfissuresinjectessansmouvemen
9、t danslebton ProdukteundSystemefrdenSchutzunddie InstandsetzungvonBetontragwerkenPrfverfahren BestimmungderWasserdichtheitvoninjiziertenRissen ohneBewegunginBeton ThisEuropeanStandardwasapprovedbyCENon1September2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatethecon
10、ditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).A
11、versioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Irela
12、nd,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansr
13、eserved worldwideforCENnationalMembers. Ref.No.EN14068:2003EEN14068:2003(E) 2 Contents page Foreword. 3 1 Scope . 4 2 Normativereferences . 4 3 Termsanddefinitions. 4 4 Testprinciple . 4 5 Apparatus 4 6 Specimenpreparation 5 7 Injection . 6 8 Procedure 7 9 Expressionofresults . 7 10 Testreport . 7EN
14、14068:2003(E) 3 Foreword ThisdocumentEN14068:2003hasbeenpreparedbyTechnicalCommitteeCEN/TC104“Concreteandrelated products”,thesecretariatofwhichisheldbyDIN. IthasbeenpreparedbySubCommittee8“Productsandsystemsfortheprotectionandrepairofconcrete structures“(SecretariatAFNOR). This EuropeanStandardshal
15、lbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimple
16、mentthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN14068:2003(E) 4 1Scope ThisEuropeanStandarddescribesatestmethodtodeterminet
17、hewatertightnessofinjectedcracksinconcrete, withdefinedcrackwidth. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences
18、,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN15041, ProductsandsystemsfortheprotectionandrepairofconcretestructuresDef
19、initions,requirements, qualitycontrolandevaluationofconformityPart1:Definitions. prEN15045:2001,ProductsandsystemsfortheprotectionandrepairofconcretestructuresDefinitions, requirements,qualitycontrolandevaluationofconformityPart5:Concreteinjection. EN1766, Productsandsystemsfortheprotectionandrepair
20、ofconcretestructuresTestmethodsReference concretesfortesting. EN123906, TestinghardenedconcretePart6:Tensilesplittingstrengthoftestspecimens. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN15041andprEN15045:2001 apply. 4 Testprinciple Theinjectionproductisi
21、njectedintoacrackof1mmwidth,themoistureconditionofwhichiscontrolled(dry, damp,wetorwithwatercounterpressure). Afterhardening,thewatertightnessoftheinjectedcrackistestedbyapplyingahydraulicdirectpressure,whichis increasedinaspecifiednumberofsteps. NOTE Forspecificapplications,theuseoftestparametersdi
22、fferentfromthosespecifiedinprEN15045:2001canbe appropriate. 5Apparatus 5.1 Apparatuswhichallowstheapplicationofwaterunderpressuretoonesurfaceofthetestpiecewhilst allowingobservationoftheoppositeface,asshowninFigure1.EN14068:2003(E) 5 Itconsistsbasicallyof: acylindricalchamber170mmindiametertoenclose
23、thetestspecimen; abottomplatewithaventandawaterinlet; polymerice.g.polypropylenespacersbetweenthespecimenslowersurfaceandthebottomplate; Thespacersare: adisc170mmindiameterand10mmthickness; twosegments170mmindiameter,70mminheightand10mmthickness. abar10mmthicknesstoholdthespecimeninplace; anelasticp
24、acker,shoreAhardness40betweentheuppersurfaceofthespecimenandthebar. 5.2 Supplyofadjustablepressuretapwater,withpressuremeasuringdevice,capableofbeingmaintainedto within 10%ofthespecifiedvalue. 5.3 Diamondsawtocutspecimens. 5.4 Compressioncylinderstestingmachine,forsplittingconcrete. 5.5 Injectionequ
25、ipment,includingmixer,pressurepotorinjectionpump,injectionnipplesorpackers. 5.6 Caulkingorsealingcompoundtosealthecrackalongtheheightandacrossthebaseofthecylindricaltest samples,accordingtotheinstructionsofthemanufacturer. 5.7 Elastomericbitumenorothersuitablematerial,toprovidesealingofthetestsample
26、intheapparatusfor applyingwaterpressure. 6 Specimenpreparation Thetestshallbeperformedonthreespecimens,preparedasfollows: 6.1 Theconcretespecimenshallbecylindricalwithadiameterof(150 2)mmand(100 2)mminheightand cutbysawingfromconcretecylinders150mmindiametercastfromareferenceconcretetypeMC(0.45)as d
27、efinedinEN1766. 6.2 Theconcretespecimenshallbesplitalongtheaxis,accordingtoEN123906. 6.3 Thetwopiecesshallbeheldtogetherinsuchawaythatacrackwidthof(1 0,2)mmisobtainedbyusing inertflexibleplasticspacers;thecrackopeningsalongtheheightshallbeentirelysealedbyusingcaulkingor sealingcompound(5.6).Thecaulk
28、ingcompoundshallnotpenetrateintothecrackbymorethan5mm. 6.4 Theconcretespecimenshallbeinsertedintotheapparatusdescribedin5.1onthepolymericdisc. 6.5 Hotelastomericbitumen(5.7)orothersuitablematerialispouredbetweenthemouldandtheconcrete specimen,takingcarenottocontaminatetheuppercircularsurface.EN14068
29、:2003(E) 6 7Injection 7.1Test conditions Thestandardclimateconditionsduringthetestshallbe(21 2)Cand(60 10)%relativehumidity,for conditioningbeforeinjection,injectionprocess,specimencuringandpressuretest. Theassemblyshallbestoredattheseconditionsfor(48 4)hpriortotesting. 7.2 Crackconditioning Thebott
30、omplateandthepolypropylenedisc(5.1)shallberemoved.Ifitisnotrequiredtoinjectagainstaheadof water(seebelow),thecrackatthelowersideshallbesealedbyusingcaulkingcompound(5.6).Thecaulking compoundshallcoverthecrackandanareaimmediatelyadjacenttothecracktoawidthlessthan15mmtoeither sideofthecrack. Twopolyme
31、ricsegments(5.1)shallbeputonthelowersideofthespecimen,oneachsizeofthecaulking compoundstrip,andthebottomplateshallbefixedagain. Iftestingforinjectionagainstaheadofwaterisrequired,thelowersideofthecrackshallnotbesealed. Twopolymericsegments(5.1)shallbeputonthelowersideofthespecimensothatthecrackisnot
32、covered. Connectiontoawatersupplyattheagreedwaterpressureshallbemadeviathewaterinlet. Dependingupontheclassificationofhumidityspecifiedbythemanufactureroftheinjectionmaterial,thespecimen shallbeconditionedasfollows: forinjectionintoadrycrack:nofurtherconditioningrequired; forinjectionintoadampcrack:
33、thecrackshallbekeptfilledwithtapwaterat(21 2)Cfor30min,then emptiedandallowedtodrainfor30minbeforeproceedingwithinjection; forinjectionintoawetcrack:soakcrackasabove,butproceedwithinjectionimmediatelyafteremptying withoutanyperiodofdraining; forinjectionintoawaterfilledcrack:fillthecrackwithwaterat(
34、21 2)Cfor30minasabove.Thenproceed withinjectionwithoutemptyingthewater; iftestingforinjectionagainstaheadofwaterisrequired,thelowersideofthecrackshallnotbesealedand connectiontoawatersupplyattheagreedwaterpressureshallbemadeviathewaterinlet. 7.3 Injection Thecrackopeningontheuppersurfaceofthespecime
35、nshallbepreparedforinjectionaccordingtothe manufacturersrecommendedprocedureappropriatefortheselectedcrackcondition(7.2).Thismayinclude thefittingofinjectionnipplesorpackersandventsasinletandoutletports; Thecomponentsoftheinjectionproductshallbemixedinaccordancewiththemanufacturersinstructionsand th
36、enintroducedintothecrackinaccordancewiththemethoddescribedbythemanufacturer.Theinjectionis completewhenunadulteratedinjectionproductisseentoemergefromtheoutletport. 7.4 Curing Thetestspecimensshallbecuredfor7daysat(21 2)Cand(60 10)%relativehumidity.EN14068:2003(E) 7 8Procedure 8.1 Cleaningofthesurfa
37、cesofthetestspecimen Aftercuring,thebottomplateandthesegments(5.1)shallberemoved.Thecaulkingcompound,ifused,andany injectionproductlyingonthesurfaceshallbecompletelyremoved,accordingtotheinstructionsofthe manufacturer,sothatthecrackbecomesvisibleattheupperandlowerside(bottom)ofthespecimen. Thesegmen
38、ts(5.1)shallthenbereplacedontheunderside,sothatthecrackisnotcovered,i.e.withthechordsof thesegmentsrunningparalleltothecrack.Thebottomplateshallthenbereplaced. Attheupperend,thesampleshallbeheldinplacebythebarandtheelasticpackerwhichwillbepositionedso thattheirlongitudinalaxesareaboutnormaltotheline
39、ofthecrack. 8.2 Applicationofwaterpressure Waterpressureshallbeappliedfromthelowerfaceasfollows: 25%ofthemaximumtargetpressurefor7days; 50%ofthemaximumtargetpressurefor7days; 75%ofthemaximumtargetpressurefor7days; 100%ofthemaximumtargetpressurefor7days. NOTE SeeprEN15045:2001forrequirementsontargetp
40、ressuresandnoteinclause4. 8.3Observations Duringtheapplicationofwaterpressure,thespecimensshallbeexaminedforwaterleakage. Temporaryleakages,whichmayoccurduringpressurechangesorshortlyafterwards,shallbeignored. 9 Expressionofresults Theobservationsmadeduringeachpressureincrementshallbedocumented. Ift
41、hesampleleaksat25%or50%ofthetargetpressure,theinjectionmaterialisdeemedtohavefailedthetest. Thetestmayberepeatedreiterativelyusingdifferenttargetpressuresinordertodeterminethecorrectpressure intervalforthematerial. 10 Testreport Thetestreportshallcontainthefollowinginformation: a) areferencetothiste
42、stmethodstandard; b) nameandaddressofthetestlaboratory; c) identificationnumberanddateofthetestreport; d) nameandaddressofthemanufacturerorsupplieroftheproduct; e) nameandidentificationmarksorbatchnumberoftheproduct;EN14068:2003(E) 8 f) dateofsupplyoftheproduct; g) dateofpreparationofthetestspecimen
43、sandanydeviationfromtheprescribedmethodofpreparation; descriptionofinjectionprocedureandconditionsofinjectionincludingthemoistureconditionofthecrack,the waterpressure(ifany)duringinjection; h) conditionsofstorageofpreparedspecimenspriortotest; i) dateoftestanddetailsofthetestequipmentused,includingthemake,typeandcapacityandt
