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Corresponding Author

gui gui

Abstract

The corrosion behavior of reinforcing steel in concrete in chloride free and chloride contaminated simulated concrete solutions was studied by electrochemical technique.The results showed that the reinforcing steel exhitibted different corrosion characteristics in the different solutons.In general ,the steel in concrete was protected in the test solutions with no salt or the lower concentration of NaCl.When the concentration of NaCl is larger than 70%,however,the corrosion behavior of the steel varied considerably,and the corrosion rate increased as pH fell and the concentration of Cl - increased.

Keywords

Reinforced concrete, Corrosion, Electrochemical technique

Publication Date

2000-08-28

Online Available Date

2000-08-28

Revised Date

2000-08-28

Received Date

2000-08-28

References

[1 ] MehtaPK .Concretedurability fiftyyearsprogress[C].Proc .of 2ndInter .Conf.onConcreteDurability ,ACISP1 2 6 - 1 ,1 991 ,1~ 31 .

[2 ] KitowskiCJ ,WheatH .G .Effectofchloridesonreinforcingsteelexposedtosimulatedconcretesolutions .Corrosion[J].1 997,5 3(3) :2 1 6~ 2 2 6 .

[3] SyedEhteshamHussain ,AhmadS .Al Gahtani,Rasheeduzzafar .Chloridethresholdforcorrosionofrein forcementinconcrete .ACIMaterialsJournal[J].1 996 ,93(6 ) :5 34~ 5 38.

[4 ] HoarTP .TheProductionandBreakdownofthepassivityofmetals .CorrosionScience[J],1 96 7(7) :341~35 5 .

[5 ] AlvarezMG ,GalveleJR .TheMechanismofpittingofhighpurityironinNaClsolutions .CorrosionScience[J].1 984,2 4(1 ) :2 7~ 48.

[6 ] HausmanCA .Steelinconcrete :Howdoesitoccur ?MaterialsProtection[J].1 96 7,6 (1 1 ) :1 9~ 2 3.

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