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01645 CORROSION BEHAVIOR OF STAINLESS STEEL CLAD REBAR

Product Number: 51300-01645-SG
ISBN: 01645-2001 CP
Author: Fushuang Cui, A.A. Sagtues, Rodney G. Powers
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Stainless steel clad rebar (SCR) was investigated because it may become a cost-effective means of controlling corrosion in concrete under very aggressive environments. Sound SCR (316L cladding) resisted corrosion in saturated Ca(OHh solution (SCS) with up to 5 wt% chloride. Cladding breaks on SCR induced significant corrosion of exposed underlying CS in SCS with only 1 wt% chloride. A computer model using laboratory data as input was constructed to evaluate the extent of galvanic corrosion of SCR. Modeling indicated that concrete resistivity and size of the cladding break are the main controlling factors of galvanic corrosion. Keywords: stainless steel clad rebar, galvanic, corrosion, chloride, potential, concrete Copyright.2001 by NACE International. Requests for permission to publish this manuscript in any form, in part or in whole must be in writing to NACE International, Publications Division, 1440 South Creek Drive, Houston, Texas 77084-4906. The material presented and the views expressed in this paper are solely those of the author(s) and not necessarily endorsed by the Association. Printed in U.S.A.
Stainless steel clad rebar (SCR) was investigated because it may become a cost-effective means of controlling corrosion in concrete under very aggressive environments. Sound SCR (316L cladding) resisted corrosion in saturated Ca(OHh solution (SCS) with up to 5 wt% chloride. Cladding breaks on SCR induced significant corrosion of exposed underlying CS in SCS with only 1 wt% chloride. A computer model using laboratory data as input was constructed to evaluate the extent of galvanic corrosion of SCR. Modeling indicated that concrete resistivity and size of the cladding break are the main controlling factors of galvanic corrosion. Keywords: stainless steel clad rebar, galvanic, corrosion, chloride, potential, concrete Copyright.2001 by NACE International. Requests for permission to publish this manuscript in any form, in part or in whole must be in writing to NACE International, Publications Division, 1440 South Creek Drive, Houston, Texas 77084-4906. The material presented and the views expressed in this paper are solely those of the author(s) and not necessarily endorsed by the Association. Printed in U.S.A.
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