Critical Chloride Corrosion Threshold of Galvanized Reinforcing Bars

Darwin, David; Browning, JoAnn; O’Reilly, Matthew; Xing, Lihua; Ji, Jianxin

dc.contributor.author	Darwin, David
dc.contributor.author	Browning, JoAnn
dc.contributor.author	O’Reilly, Matthew
dc.contributor.author	Xing, Lihua
dc.contributor.author	Ji, Jianxin
dc.date.accessioned	2017-02-24T18:24:17Z
dc.date.available	2017-02-24T18:24:17Z
dc.date.issued	2009
dc.identifier.citation	Darwin, D., Browning, J.P., O’Reilly, M., Xing, L. and Ji, J., "Critical Chloride Corrosion Threshold of Galvanized Reinforcing Bars," ACI Materials Journal Vol. 106, No. 2, March/April 2009, pp. 176-183.	en_US
dc.identifier.uri	http://hdl.handle.net/1808/23270
dc.description.abstract	The chloride content required for corrosion initiation of galvanized reinforcing bars is determined. The bars conform to ASTM A767, except that no chromate treatment was applied to allow the degree of hydrogen evolution for untreated bars to be evaluated. Test results, along with results for conventional (ASTM A615), low carbon chromium (ASTM A1035, MMFX), and 316LN stainless steel reinforcement are compared with chloride surveys of bridge decks to obtain an average time to corrosion initiation. The average critical chloride corrosion threshold of galvanized reinforcement is greater than the threshold for conventional steel and lower than the threshold for ASTM A1035 and 316LN steel. Hydrogen gas evolution did not increase the porosity of the concrete in the non-chromate treated bars relative to that observed for conventional reinforcement. The average time to corrosion initiation at crack locations in bridge decks for galvanized steel is 4.8 years, compared with 2.3 years for conventional steel, and 15 years for ASTM A1035 steel. 316LN stainless steel will not corrode.	en_US
dc.publisher	American Concrete Institute	en_US
dc.relation.isversionof	https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=56465	en_US
dc.subject	Bridge decks	en_US
dc.subject	Corrosion	en_US
dc.subject	Galvanized reinforcement	en_US
dc.subject	Low carbon chromium steel	en_US
dc.subject	Stainless steel	en_US
dc.subject	Zinc	en_US
dc.title	Critical Chloride Corrosion Threshold of Galvanized Reinforcing Bars	en_US
dc.type	Article	en_US
kusw.kuauthor	Darwin, David
kusw.kudepartment	Civil, Environmental & Architectural Engineering	en_US
dc.identifier.orcid	https://orcid.org/0000-0001-5039-3525
kusw.oaversion	Scholarly/refereed, publisher version	en_US
kusw.oapolicy	This item meets KU Open Access policy criteria.	en_US
dc.rights.accessrights	openAccess

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