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1、山東建筑大學(xué)畢業(yè)設(shè)計(jì)外文文獻(xiàn)及譯文外文文獻(xiàn)：MaterialsandStructures??RILEM?201010.1617/s11527-010-9700-yOriginalArticleImpactofcrackwidthonbond:confinedandunconfinedrebarDavid?W.?Law1?,Denglei?Tang2,Thomas?K.?C.?Molyneaux3andRebecca?Gravina3(1)?SchooloftheBuiltEnvironment,HeriotWattUniversity,Edinburgh,EH144AS,UK(2)?
2、VicRoads,Melbourne,VIC,Australia(3)?SchoolofCivil,EnvironmentalandChemicalEngineering,RMITUniversity,Melbourne,VIC,3000,AustraliaDavid?W.?LawEmail:D.W.Law@hw.ac.ukReceived:14?January?2010??Accepted:14?December?2010??Publishedonline:23?December?2010AbstractThispaperreportstheresultsofaresearchpr
3、ojectcomparingtheeffectofsurfacecrackwidthanddegreeofcorrosiononthebondstrengthofconfined-44-山東建筑大學(xué)畢業(yè)設(shè)計(jì)外文文獻(xiàn)及譯文andunconfineddeformed12and16?mmmildsteelreinforcingbars.ThecorrosionwasinducedbychloridecontaminationoftheconcreteandanappliedDCcurrent.Theprincipalparametersinvestigatedwereconfinement
4、ofthereinforcement,thecoverdepth,bardiameter,degreeofcorrosionandthesurfacecrackwidth.Theresultsindicatedthatpotentialrelationshipbetweenthecrackwidthandthebondstrength.Theresultsalsoshowedanincreaseinbondstrengthatthepointwhereinitialsurfacecrackingwasobservedforbarswithconfiningstirrups.Nosuc
5、hincreasewasobservedwithunconfinedspecimens.Keywords:??bond?;corrosion?;?rebar?;?cover?;?crackwidth?;?concrete-44-山東建筑大學(xué)畢業(yè)設(shè)計(jì)外文文獻(xiàn)及譯文1?IntroductionThecorrosionofsteelreinforcementisamajorcauseofthedeteriorationofreinforcedconcretestructuresthroughouttheworld.Inuncorrodedstructuresthebondbetweenth
6、esteelreinforcementandtheconcreteensuresthatreinforcedconcreteactsinacompositemanner.However,whencorrosionofthesteeloccursthiscompositeperformanceisadverselyaffected.Thisisduetotheformationofcorrosionproductsonthesteelsurface,whichaffectthebondbetweenthesteelandtheconcrete.Thedeteriorationofrei
7、nforcedconcreteischaracterizedbyageneralorlocalizedlossofsectiononthereinforcingbarsandtheformationofexpansivecorrosionproducts.Thisdeteriorationcanaffectstructuresinanumberofways;theproductionofexpansiveproductscreatestensilestre
