摘要
Corrosionofsteelrebaristhemostimportantdurabilityproblemofreinforcedconcrete.Theaimofthisresearchwastoinvestigatethecorrosionbehaviorofsteelrebarinsimulatedporesolutionsandgangue-blendedcementmortar.Thesimulatedporesolutionswerebasedontheporesolutioncompositionofgangue-blendedcement.ThepHandCl-concentrationofsimulatedporesolutionshadsignificanteffectsoncorrosionpotential.However,anincreaseinpHreducedtheinfluenceofCl-concentra-tiononcorrosionpotential.Thecorrosionbehaviorofsteelrebaringangue-blendedcementisdifferentfromthatinsimulatedsolutions.Theganguecementitiousmortarsurroundingsteelrebarprovidesstablepassivityenvironmentsforsteel,leadingtoadecreaseiniondiffusioncoefficients.Alternatingcurrentimpedance(ACI)analysisresultsindicatedthattheindicatorRcforconcreteresistivityishigherforganguemortarthanforordinaryPortlandcement(OPC),whichimprovesitscorrosionpotential.TheresultsfromenergydispersiveX-rayanalysis(EDX)showedmorealuminatesandsilicatesattherebarinterfaceforgangue-blendedcement.Thesealuminatesimprovethechloridebindingcapacityofhydratesinmortar,andincreasethecorrosionprotectionofsteelrebar.
出版日期
2010年05月15日（中国期刊网平台首次上网日期，不代表论文的发表时间）
