1、BRITISH STANDARD BS EN 13894-2:2002 Products and systems for the protection and repair of concrete structures Test methods Determination of fatigue under dynamic loading Part 2: After hardening The European Standard EN 13894-2:2002 has the status of a British Standard ICS 91.080.40 BS EN 13894-2:200
2、2 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 4 November 2002 BSI 4 November 2002 ISBN 0 580 40684 9 National foreword T
3、his British Standard is the official English language version of EN 13894-2:2002. The UK participation 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 organizati
4、ons represented on this subcommittee can be obtained on request 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 Catalogue under the section entitled “International Standards Correspon
5、dence 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 the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of i
6、tself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments an
7、d 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 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Da
8、te CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN138942 October2002 ICS91.080.40 Englishversion Productsandsystemsfortheprotectionandrepairofconcrete structuresTestmethodsDeterminationoffatigueunder dynamicloadingPart2:Afterhardening Produitsetsystmespourlaprotectionetlarparationdes struc
9、turesenbtonMthodesdessaisDterminationde lafatiguesouschargedynamiquePartie2:Aprs durcissement ProdukteundSystemefrdenSchutzunddie InstandsetzungvonBetontragwerkenPrfverfahren BestimmungdesErmdungsverhaltensbeidynamischer BelastungTeil2:NachdemErhrten ThisEuropeanStandardwasapprovedbyCENon11July2002.
10、 CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyC
11、ENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustri
12、a,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B10
13、50Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN138942:2002EEN138942:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Principle4 4 Equipment.4 5 Testprocedure .4 6 Testreport . .5EN138942:2002(E) 3 Foreword Thisdo
14、cument(EN138942:2002)hasbeenpreparedbyTechnicalCommitteeCEN /TC 104“Concreteand relatedproducts“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyApril2003,andconflictingnationalstandardss
15、hallbewithdrawnatthelatestby April2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherland
16、s,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN138942:2002(E) 4 1Scope ThispartofthisEuropeanStandarddescribesamethodfordeterminingtheresponsetofatigueunderdynamic loadingofstructuralbondingagentsafterhardening. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundated
17、reference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forun
18、datedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). ENISO85011,PreparationofsteelsubstratesbeforeapplicationofpaintsandrelatedproductsVisual assessmentofsurfacecleanlinessPart1:Rustgradesandpreparationgradesofuncoatedsteelsubstratesand ofsteelsubstratesafteroveral
19、lremovalofpreviouscoatings(ISO85011:1988). ISO3800, ThreadedfastenersAxialloadfatiguetestingTestmethodsandevaluationofresults . 3Principle Aslantsheartestisconductedusingsteelprismsofsize40mm 40mm 160mmwithabondlineinclinedatan angleof45(Figure1).Thetestisperformedbyapplyingadynamictensionforcealong
20、thelongitudinalaxisofthe bondedprism.Thenumberofloadcyclesisprogressivelyraiseduntilfailureoccurs. 4Equipment 4.1 Steelprisms,40mm 40mm 160mmcutatanangleof45,asshowninFigure1withthreadedholesat thetwoextremitiesforconnectiontosteelbarsasdescribedin5.3. 4.2 Gritblastingequipmentwithoilseparator. 4.3
21、Atensiontestingmachinecapableofapplyingloadcycleswithafrequencyof2Hzto5Hzwithloads between5kNand20kNandadeviceforcountingtheloadcycles. 5 Testprocedure 5.1 Preparationoftestpieces Thetestspecimensshallbepreparedat21C2CandaRHof60%10%.Thebondingsurfacesofthesteel prismsshallbedegreasedusingasuitablede
22、greasingagentandthengritblastedtogradeSA2.5ofEN ISO85011.Thesteelsurfacesshallthenbevacuumedtoremoveanydust.Mixtheadhesiveinaccordancewith themanufacturersinstructionsandapplyittoeachofthepreparedbondingsurfacessuchthatwhentheyare broughttogetherusingthe4screwsshowninFigure1abondlinethicknessof1,0mm
23、0,1mmisachievedor suchotherbondlinethicknessasshallbespecifiedinaccordancewiththeuseoftheproduct.Theassembledtest specimensshallbestoredat21C2CandaRH60%10%foratleast7days. 5.2 Numberoftestspecimens Threeprismsshallbetestedtofindthemeanshorttermfailureload, F um .Fiveprismsshallbesubjectedto dynamicl
24、oadingtestateachofthreeloadranges.EN138942:2002(E) 5 5.3Testing Theshorttermfailureloadforeachprism, F u ,isdeterminedbyapplyingaconstantrateofloadingof1kN/suntil failure.Themeanvalue, F um ,isthencalculated. Thefatiguetestshallbeperformedatthreeloadranges.Ineachcasethelowestloadshallbe5%of F um .Th
25、e threeupperloadsshallbe80%,70%and60%of F um ,respectively.Ifmorethanthreeprismsdonotfailbefore 10 7 loadcyclesatthelowestloadrange,thetestshallberepeatedatthenexthighestloadrange. Connecttheendsoftheprismsbyscrewinginsteelbarsof10mmdiameter.Thelengthofthesebarsshallbeat least200mm.Removeorloosenthe
26、bondlineadjustmentscrews.Carryoutthedynamictensiontestin accordancewithISO3800atacyclefrequencybetween2Hzand5Hz.Recordthenumberofloadcyclesandthe failuremode(see5.4). 5.4 Failuremode Recordthefailuremodeasoneofthefollowingtwotypes: TypeA:cohesionfailurewithintheadhesive; TypeB:adhesionfailureatoneof
27、theinterfaces. Ifamixtureoffailuremodesisrecorded,visuallydeterminethesurfaceareapercentageforeachtypeof failureandexpressthisasaratio,forexample: A:B=70:30 6 Testreport Thetestreportshallincludethefollowinginformation: a) areferencetothistestmethodstandard; b) nameandaddressofthetestlaboratory; c)
28、identificationnumberanddateofthetestreport; d) nameandaddressofthemanufacturerorsupplieroftheproduct; e) nameandidentificationmarksorbatchnumberoftheproduct; f) dateofsupplyoftheproduct; g) dateofpreparationofthetestspecimensandanydeviationfromtheprescribedmethodofpreparation; h) conditionsofstorage
29、ofpreparedspecimenspriortotest; i) dateoftestanddetailsofthetestequipmentused,includingthemake,typeandcapacityandthecalibration detailsortheidentificationnumberoftheapparatus; j) theshorttermfailureloadofeachprism, F u ,andthemeanvalue, F um ; k) thebottomloadandtheupperloadofeachtestinpercentagesof
30、 F um ; l) thefrequencyoftheloadcycles; m) thenumberofloadcyclesofeachtest;EN138942:2002(E) 6 n) thefailuremodeofeachtestspecimen; o) precisiondata; p) anydeviationfromthisstandard; q) dateoftestreportandsignature.EN138942:2002(E) 7 Dimensionsinmillimetres Key 1 Threadedholeforconnectionto10mmdiamet
31、ersteelbar 2 40mm 40mm 160mmsteelprism 3 Bondline 4 Screwclamps Figure1SlantsheartestintensionBS EN 13894-2:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on sta
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