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1、山东建筑大学毕业设计外文文献及译文外文文献：MaterialsandStructures© RILEM 201010.1617/s11527-010-9700-yOriginalArticleImpactofcrackwidthonbond:confinedandunconfinedrebarDavid W. Law1 ,Denglei Tang2,Thomas K. C. Molyneaux3andRebecca Gravina3(1) SchooloftheBuiltEnvironment,HeriotWattUniversity,Edinburgh,EH144AS
2、,UK(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 2010-40-山东建筑大学毕业设计外文文献及译文AbstractThis
3、paperreportstheresultsofaresearchprojectcomparingtheeffectofsurfacecrackwidthanddegreeofcorrosiononthebondstrengthofconfinedandunconfineddeformed12and16 mmmildsteelreinforcingbars.ThecorrosionwasinducedbychloridecontaminationoftheconcreteandanappliedDCcurrent.Theprincipalparametersinvest
4、igatedwereconfinementofthereinforcement,thecoverdepth,bardiameter,degreeofcorrosionandthesurfacecrackwidth.Theresultsindicatedthatpotentialrelationshipbetweenthecrackwidthandthebondstrength.Theresultsalsoshowedanincreaseinbondstrengthatthepointwhereinitialsurfacecrackingwasobservedforbar
5、swithconfiningstirrups.Nosuchincreasewasobservedwithunconfinedspecimens.Keywords: bond ;corrosion ; rebar ; cover ; crackwidth ; concrete-40-山东建筑大学毕业设计外文文献及译文1 IntroductionThecorrosionofsteelreinforcementisamajorcauseofthedeteriorationofreinforcedconcretestructuresthroughouttheworld.Inu
6、ncorrodedstructuresthebondbetweenthesteelreinforcementandtheconcreteensuresthatreinforcedconcreteactsinacompositemanner.However,whencorrosionofthesteeloccursthiscompositeperformanceisadverselyaffected.Thisisduetotheformationofcorrosionproductsonthesteelsurface,whichaffectthebondbetweenth
7、esteelandtheconcrete.Thedeteriorationofreinforcedconcreteischaracterizedbyageneralorlocalizedlossofsectiononthereinforcingbarsandtheformationofexpansivecorrosionproducts.Thisdeteriorationcanaffectstructuresinanumberofways;theproductionofexpansiveproductscreatestensilestre
