BS EN 12618-1-2003 Products and systems for the protection and repair of concrete structures - Test methods - Adhesion and elongation capacity of injection products with limited du.pdf

1、BRITISH STANDARD BS EN 12618-1:2003 Products and systems for the protection and repair of concrete structures Test methods Part 1: Adhesion and elongation capacity of injection products with limited ductility The European Standard EN 12618-1:2003 has the status of a British Standard ICS 91.080.40 BS

2、 EN 12618-1:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 25 August 2003 BSI 25 August 2003 ISBN 0 580 42506 1 National foreword This British Standard is the official English language version of EN 12618-1:2003. The UK participation i

3、n 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 B

4、ritish 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 respo

6、nsible 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 cov

7、er, the EN title page, pages 2 to 16, an inside back cover 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 EN126181 July2003 ICS

8、91.080.40 Englishversion Productsandsystemsfortheprotectionandrepairofconcrete structuresTestmethodsPart1:Adhesionandelongation capacityofinjectionproductswithlimitedductility Produitsetsystmespourlaprotectionetlarparationdes structuresenbtonMthodesdessaiPartie1:Capacit dadhrenceetdallongementdespro

9、duitsdinjection ductilitlimite ProdukteundSystemefrdenSchutzunddie InstandsetzungvonBetontragwerkenPrfverfahrenTeil 1:HaftungundDehnungflexiblerFllgterfrRisse ThisEuropeanStandardwasapprovedbyCENon7May2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsfor

10、givingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversionina

11、nyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,L

12、uxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved wo

13、rldwideforCENnationalMembers. Ref.No.EN126181:2003EEN126181:2003(E) 2 Contents Page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Testmethod. .4 4.1 Principles4 4.2 Equipment.4 4.2.1 Tensiletestmachine 4 4.2.2 Formwork5 4.2.3 XYrecorder 5 4.2.4 Displacementtransducer. .5 4.

14、2.5 Displacementgauge,withmeasuringplates. .5 4.2.6 Injectionequipment . 5 4.2.7 Pressuregauge 5 4.3 Procedure .5 4.3.1 Specimenpreparation .5 4.3.2 Injectionprocedure. .6 4.3.3 Measurementofadhesionandelongationcapacity . .6 5 Calculation7 6 Testreport . .7EN126181:2003(E) 3 Foreword Thisdocument(E

15、N126181:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC104,“Concreteand relatedproducts“,thesecretariatofwhichisheldbyDIN. IthasbeendraftedbySubCommittee8“Productsandsystemsfortheprotectionandrepairofconcretestructures“ (SecretariatAFNOR). ThisEuropeanStandardshallbegiventhestatusofanationalstandard,

16、eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJanuary2004,andconflictingnationalstandardsshallbewithdrawnatthelatest byJanuary2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austri

17、a,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN126181:2003(E) 4 1Scope ThispartofthisEuropeanStandarddescribesthereferenceprocedurefordeterminingtheadhes

18、ivebondcapacity andelongationcapacityofinjectionproducts,intendedforductilefillingofcracksandcavities. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsar

19、elistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN1961, MethodsoftestingcementPart1:Det

20、erminationofstrength. EN15041:1998,ProductsandsystemsfortheprotectionandrepairofconcretestructuresDefinitions, requirements,qualitycontrolandevaluationofconformityPart1:Definitions. prEN15045:2002,ProductsandsystemsfortheprotectionandrepairofconcretestructuresDefinitions, requirements,qualitycontrol

21、andevaluationofconformityPart5:Concreteinjection. EN1766, ProductsandsystemsfortheprotectionandrepairofconcretestructuresTestmethodsReference concretesfortesting. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thedefinitionsofEN15041:1998andprEN15045:2002shallapply. 4 Testmethod 4.1Princ

22、iples Theextensibilityandtensilebondstrengthoftheproduct(andtheeffectofcrackwidthupontheseparameters)are determinedafterinjectionintocracksofdifferentwidthsandthreemoistureconditionsofthecrack:dry,wetand waterfilled. Theelongationandbondstrengthtestingarecarriedoutat(3 2)C. 4.2Equipment 4.2.1 Tensil

23、etestmachine Thelaboratoryinwhichthesetestsarecarriedoutshallbeequippedwithatestmachinecomplyingwiththe requirementsofEN1961.Thetestmachineshallbefittedwithselfaligningapplicationofloadtoensureaxial tensileloadingofthespecimenandhaveacontrolledenvironmentcabinetabletomaintainconstanttemperatures of(

24、3 2)C. Thetensileforceshallbeatleast50kNwithanadjustablespeedof0,01mm/min.EN126181:2003(E) 5 4.2.2Formwork Thesteelformworkconsistsof: anuppersteelplateprovidedbyfourM12threadedbolts,fourM16galvanisedthreadedbolts,sixheadcap screwsandanopeningforconcrete,groovesforsteelsheets; alowersteelplateprovid

25、edbyfourM12threadedbolts,fourM16galvanisedthreadedbolts,anda24screw, groovesforsteelsheets; twolargeandtwosmallsteelsheetsassideboardings; threeM8threadedtubesandnuts,withsteelbrads,toprovideinjectionproductentrance,ventandpressure control; threefittingplates,sixheadcapscrews; eightM16threadedboltsa

26、ndtwentyM16nutstolinktheupperandlowersteelplates; arubberstrip; a crown. ThepiecesaredescribedinTable2andFigures1,2,3,4and5. 4.2.3 XYrecorder Capableofdisplayingloaddeformationcurves.Thedeformationbaseshallbecapableofbeingreadtoan accuracyof0,001mm. 4.2.4 Displacementtransducer Thedisplacementtransd

27、ucershallgiveacontinuousrecordingofthedeformationwithanaccuracyof0,001mm. 4.2.5 Displacementgauge,withmeasuringplates Thedisplacementgauge,withmeasuringplates,shallmeasureameasuringlengthofabout100mmwithan accuracyof0,001mm. 4.2.6 Injectionequipment Intheconcretecubearethreeinjectionpackerswithaninn

28、erdiameterof23mm.Theopeningsofthepackersare closedwithvalve.Themanufacturerdetermines:mixingequipment,injectionpump,kindofpacker. 4.2.7 Pressuregauge Apressuregaugesuitableformeasuringpressuresupto6MPa,withanaccuracyof0,05MPa. 4.3Procedure 4.3.1 Specimenpreparation Aseparatespecimenisrequiredforeach

29、crackwidthineachofthemoisturestatesofthecracks/crackflanks (surface). Threespecimensaretobetestedforeachtestcondition,18specimensinall.Thetestparametersaresummarised inTable1.OthertesttemperaturesinadditiontothoselistedinTable1maybeagreed.EN126181:2003(E) 6 Thespecimensconsistofcubesmadeofreferencet

30、ypesofconcreteasspecifiedbyEN1766,withcracksof definedwidth.Theconcretespecimensaremadeinsteelforms(seeFigures1,2and3)placedonavibrating table.Theconcreteiscastthroughanopeningintheuppersteelplateoftheform.FourM12bolts(Table2:11) andoneM24screw(Table2:9)arefixedinthelowerplatebeforefillingtheformwit

31、hconcrete.Afterfillingthe form,theconcreteiscompactedandanotherfourM12bolts(Table2:11)arefixedthroughtheupperplate.The threescrewedtubes(Table2:10)withasteelbradinside(Table2:12)(protectionagainstfreshconcrete penetration)arepushedintotheconcrete,thenthefinalcompactionofconcreteisdone. Thefilledform

32、sarethenmaintainedat(21 2)Cand(60 10)%relativehumidity. Thesteelsidesheetsoftheforms(Table2:5+6)andthesteelbradsareremovedaftertwodays,thespecimens arefittedwithmeasuringplatesonallsidesandazeromeasurementismadewiththedisplacementgaugeinthe uncrackedstate(crackwidthw=0). Atanageof3days,acrackisinduc

33、edinthespecimenbysplitting(seeFigure6),afterthenutsofthethreaded boltsM16(Table2:7)havebeenloosenedatoneside.ThenthecrackwidthdefinedinTable1issetbyadjusting theboltnutsM16andthenutsaresecuredwithlockingnuts(Table2:7). Eachconcretespecimenisthenenclosedinarubberstrip(Table2:13),fixedwithanadhesive,a

34、ndareusable crownmadeofsteel(Table2:14). Thecrackwidthbeforeinjectionismeasuredwiththedisplacementgauge. 4.3.2 Injectionprocedure Atanageof7to10daysthespecimenshallbepreparedforinjection(seeFigure7). Thespecimenandtheinjectionproductshallbeconditionedat(21 2)Cfor48hoursbeforeinjection. Theinjections

35、hallbeperformedfortwocrackwidths(0,3mmand0,5mm)inthreedifferentmoisturestatesofthe crack:W(waterfilled),M(moist)andD(dry).EachmoisturestateisobtainedasdescribedinTable1Test conditions. Foreachsituation(crackwidthmoisturestate),threespecimensshallbeinjected. Thetwocomponentsoftheinjectionproductshall

36、bemixedaccordingtothemanufacturersinstructions. Theinjectiontakesplaceviathecentraltubeofthecrownedspecimens. Theinjectionpressureismeasuredwiththepressuregauge,whichisfittedtooneofthesidetubes.Theotherside tubeisleftclearfortheventingofairorwater,andisclosedassoonasinjectionproductemerges. Injectio

37、niscontinued,terminatingwhentheinjectionproductleaksoutundertherubberstriporwhentheinjection pressurereaches6MPa. Thecrackwidthafterinjectionismeasuredwiththedisplacementgauge. Theinjectedspecimensarestoredat(21 2)Cfor6days. 4.3.3 Measurementofadhesionandelongationcapacity Thecrownsandrubberstripsha

38、llberemovedandtheinjectedspecimensprovidedwithfourdisplacement transducers(oneoneachside). Eachinjectedspecimenshallthenbeconditionedat(3 2)Cforatleast48hbeforethetest. Thespecimenshallbefittedintothetensiontestmachine(seeFigure8)withsufficientloadappliedtotakeupthe slackinthefittings. Amanualdispla

39、cementmeasurementtakesplacewiththedisplacementgaugeoneachside;thisisthezero measurement,orinitialcrackwidthoneachside.EN126181:2003(E) 7 ThethreadedboltsM16areremovedinthistensionedstatewithsimultaneouslooseningofthenuts(Table2:7 and7a);thedeformation,ifany,linkedwiththeremovingofthethreadedboltsisr

40、ecordedwiththeXYrecorder. Thespecimenisnowsubjectedtotensiletesting;thetestisdisplacementcontrolledat0,01mm/minute,until failureoccurs. Theload/deformationcurveisrecordedwiththeXYrecorder. Thetypeofthefailure(cohesiveoradhesiverupture)andthedegreeoffilling(percentageratiooftheinjectedarea tothecrack

41、area)areobservedandnoted. Table1Testconditions Crackwidth (mm) 0,3 0,5 Injection 21 2 Storing 6days 21 2 Storing48h beforetest 3 2 Temperature (C) Test 3 2 W a M b Moisturestateofthecrack D c a W(waterfilled) Thedammedcrackisfilledwithwaterfor30minandinjectedimmediatelyafterwards. b M(moist) Thedamm

42、edcrackisfilledwithwater,blownoutwithcompressedairafter10minand injectedimmediatelyafterwards. c D(dry) Crackflankwithoutwatertreatment. 5Calculation Thetensilestrengthshallbecalculatedfromthemaximumstressrecordeddividedbytheinjectedcrosssectional areaofthespecimenandexpressedinN/mm 2 . Theelongatio

43、natfailureshallbecalculatedoneachsidefromthelineardeformationgivenbyeachtransducerin relationtotheinitialcrackwidthmeasuredin4.3.3,atthemomentofmaximumforce. Theelongationatfailureforthetestedspecimenisthemeanvalueofthe4sides. 6 Testreport Thetestreportshallcontainthefollowinginformation: a) areferencetothistestmethodstandard; b) nameandaddressofthetes