混凝土中钢筋锈蚀的电化学检测方法

张伟平张誉刘亚芹(200092):,,,:ELECTROCHEMICALMETHODSFORINVESTIGATIONOFREINFORCEMENTCORROSIONINCONCRETEZhangWeipingZhangYuLiuYaqin(TongjiUniversity200092)Abstract:Basedoncomprehensiveanalysisofthenondestructivemethodsformeasurementofsteelcorrosionincon-crete,thecommonelectrochemicalmethodsarediscussedontheirapplication,meritsanddemeritsFinallythetrendofdevelopmentispointedoutKeywords:concretereinforcementcorrosionelectrochemicalmethod1,;;/,Bazant[1,2];[3]Bazant,OH-,;[4],;[5,6],[7~10],,,,:25:1998-04-0621IndustrialConstruction1998,Vol.28,No.12工业建筑1998年第28卷第12期[10][11][11,12][10][13],X,[14],,[15],,,,,2,11/*Eicorricorricorricorricorricorricorr,******:*;**21自然电位法50,[16],2,,,,,1a;,,,1b1c22工业建筑1998年第28卷第12期,;,;[18],2/mVASTMC876-200,95%;-200~-350,50%;-350,5%-300,;-300,;-300,[17]-300,95%;-300~-450,50%;-450,5%-250,;-250~-400,;-400,20cm,150~200,20cm,150~200,,1(a)-;(b)-;(c)-22交流阻抗谱法,,,,,,[19,20],,,;,;;,,23线性极化法SternGeary1957(10mV),,,,I=icorrr[2.303ba+2.303bc]=1Rp(1a)icorr=babc2.303(ba+bc)1Rp=BRp(1b)stern-Geary,I23混凝土中钢筋锈蚀的电化学检测方法张伟平等,rcorr,,babcTafel,Rp,B=babc2.303(ba+bc)Rp,BicorrB,Ca(OH)2B2,,[21],[22],,2,B,,,,,,,;(GuardRing)(ExtraReferenceElectrodes)[23],,,24恒电量法,,,,,[24]33Q,00=QCS(2),C;S;00Ecorr(),,[25],25其它电化学方法251()(),,,,;,,24工业建筑1998年第28卷第12期252,70Stratfull,[26],,Wenner(ConductCellMethod)(DiskElectrodeMethod),,,,,,3(1),;,(2),(),/,,(3),,,;;,;,1BazantZPPhysicalModelforSteelCorrosioninConcreteSeaStructures-TheoryJournalofStructuralDivision,AS-CE,1979,105(6):1137~11532BazantZPPhysicalModelforSteelCorrosioninConcreteSeaStructures-Application,JournalofStructuralDivision,ASCE,1979,105(6):1155~11663,,1990(4)4.:[]:,19955,,..,1996(4)6,,..,1996(4)7,..:,,19968..:,,19969.!-,,198810,:,199011,:,199012BrowneRD,etalTongueConcreteintheOceans,TechReportNo5,198013.!-,!-,1995,33(3):123~129(32)25混凝土中钢筋锈蚀的电化学检测方法张伟平等3()4(),,,10mm(,),05h,,,(3)1m,,,(4),,,,14d3,,6,,,,,,,1.:,19842,..:,1990(25)14,,.,1997():487~49415..:.198516,..:,199117ChakrabartiSC,SharmaKNAssessmentofCorrosionofReinforcement:RevisedCriteriaforHal-fCellPotentialMethodTheIndianConcreteJournal,1995,69(4):237~23918GrimaldeGFactorsInfluencingElectrodePotentialofSteelinConcreteBrCorrosJ.,1986,21(1)19SagoeKK,Crentsil,GlasserFRElectrochemicalChar-acteristicsofReinforcedConcreteCorrosionasDeter-minedbyImpedanceSpectroscopyBrCorrosJ.,1992,27(2)20HachaniL,etalCharacterisationofSteel/ConcreteInterfacebyElectrochemicalImpedanceSpectroscopyBrCorrosJ.,1994,29(2)21DhirRK,JonesMR,McCarthyMC.MeasurementofReinforcementCorrosioninConcreteStructuresACIConcrJ,1991,25(1):15~1922GowersKR,MillardSGProgrammableLinearPolarisa-tionMeterforDeterminationofCorrosionRateofRein-forcementinConcreteStructuresBrCorrosJ,1994,29(1)23FeliuS,GonzalezJA,AndradeMCConfinementofElectricalSigalforIn-situMeasurementofPolarizationResistanceinReinforcedConcreteACIMaterJ,1990,87(5):457~46024NewtonCJ,SykesJMAGalvanostaticPulseTechniqueforInvestigationofSteelCorrosioninConcreteCorrsSci,1988,28(11):1051~107325RodriguezPandGonzalezJAUseofCoulostaticMethodforMeasuringCorrosionRatesofEmbeddedMetalinConcreteMagConcrRes,1994,46(167):91~9726FeliuS,AndradeC,GonzalezJANewMethodforIn-situMeasurementofElectricalResistivityofReinforcedConcreteMaterConst,1996(29):362~36532工业建筑1998年第28卷第12期