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1、CementandConcreteResearch32(2002)1313–1318EvaluationofthebondpropertiesbetweenconcreteandreinforcementasafunctionofthedegreeofreinforcementcorrosionHan-SeungLeea,*,TakafumiNoguchib,FuminoriTomosawacaDepartmentofArchitecture,AdvancedStructureResearchStation(ERC),Hanyan
2、gUniversity,L271Sa-ldongAnsan,425791Kyunggido,Seoul,SouthKoreabDepartmentofArchitecture,FacultyofEngineering,UniversityofTokyo,Tokyo,JapancDepartmentofArchitecture,FacultyofEngineering,HokkaidoUniversity,Sapporo,JapanReceived3February2000;accepted11March2002AbstractIn
3、ordertoinvestigatetheeffectofreinforcementcorrosiononthebondpropertiesbetweenconcreteandreinforcement,thepullouttestswereconductedusingreinforcementsembeddedinconcretespecimens,whichwerecorrodedbyanacceleratedelectriccorrosionmethod.Afiniteelementmethod(FEM)analysiswa
4、salsocarriedoutonthebasisoftheresultsofthepullouttests.Themaximumbondstrength(tmax)andthebondrigidity(Ds)ofspecimensdecreasedinproportiontotheincreaseofcorrosionpercentage(Dw),respectively.Also,thecurvesofbondstress–freeendslipcouldbeanalyzedbytheFEM,ifthetmaxandDswer
5、edeterminedasafunctionofcorrosionpercentage.TheequationsforcalculatingthemaximumbondstrengthandthebondrigiditynecessaryforanFEManalysisofRCmemberswithcorrodedreinforcementswereobtainedbytheexperimentsandtheFEManalysisofthepullouttests.D2002ElsevierScienceLtd.Allrights
6、reserved.Keywords:Reinforcementcorrosion;Bondproperty;Finiteelementanalysis;Pullouttest;Durability1.Introductioncorrodedreinforcement[8].Accordingly,ifmaterialmodelsrepresentingtherelationshipsbetweenthedegreeofrein-Lossesinthestructureperformanceofreinforcedcon-force
7、mentcorrosionandthebondpropertiesandmechanicalcretememberswithcorrodedreinforcementsarecausedbypropertiesofcorrodedreinforcementscanbeobtainedlossesintheeffectivecross-sectionalareaofconcreteduetoexperimentally,wethinkitispossibletoanalyzethestrengthcrackinginthecover
8、concrete,lossesinthemechanicalofRCstructuresdamagedbyreinforcementcorrosionbytheperformanceofreinforcementsduetothelossesint
