Stray current induced corrosion of steel fibre reinforced concrete

Tang, Kangkang

dc.contributor.author	Tang, Kangkang
dc.date.accessioned	2017-08-30T08:53:15Z
dc.date.available	2017-08-30T08:53:15Z
dc.date.issued	2017-08-18
dc.identifier.citation	Tang, K., 'Stray current induced corrosion of steel fibre reinforced concrete', Cement and Concrete Research. 100 pp.445 doi: 10.1016/j.cemconres.2017.08.004
dc.identifier.issn	0008-8846
dc.identifier.doi	10.1016/j.cemconres.2017.08.004
dc.identifier.uri	http://hdl.handle.net/2436/620626
dc.description.abstract	Stray current induced corrosion is a major technical challenge for modern electric railway systems. The leakage of stray current to surrounding reinforced concrete structures can lead to steel reinforcement corrosion and the subsequent disintegration of concrete. Steel fibre reinforced concrete has been increasingly used as the railway tunnel lining material but it is not clear if discrete steel fibres can still pick up and transfer stray current in the same way as conventional steel reinforcement and lead to similar corrosion reactions. The corrosion behaviour of steel fibres was investigated through voltammetry tests and electrochemical impedance spectroscopy. The presence of high concentration chloride ions was found to increase the pitting corrosion tendency of steel fibres in simulated concrete pore solutions and mortar specimens. The chloride threshold level for corrosion of steel fibres in concrete is approximately 4% NaCl (by mass of cement) which is significantly higher than that of conventional steel reinforcement.
dc.language.iso	en
dc.publisher	Elsevier
dc.relation.url	http://linkinghub.elsevier.com/retrieve/pii/S0008884617303009
dc.subject	Steel fibre reinforced concrete
dc.subject	EIS
dc.subject	Cyclic voltammetry
dc.subject	Potentiostatic
dc.subject	Passivity
dc.subject	Pitting corrosion
dc.title	Stray current induced corrosion of steel fibre reinforced concrete
dc.type	Journal article
dc.identifier.journal	Cement and Concrete Research
dc.date.accepted	2017-08-03
rioxxterms.funder	University of Wolverhampton
rioxxterms.identifier.project	UoW300817KT
rioxxterms.version	AM
rioxxterms.licenseref.uri	https://creativecommons.org/CC BY-NC-ND 4.0
rioxxterms.licenseref.startdate	2018-08-18
dc.source.volume	100
dc.source.beginpage	445
dc.source.endpage	456
refterms.dateFCD	2018-10-19T09:26:31Z
refterms.versionFCD	AM
refterms.dateFOA	2018-10-01T00:00:00Z
html.description.abstract	Stray current induced corrosion is a major technical challenge for modern electric railway systems. The leakage of stray current to surrounding reinforced concrete structures can lead to steel reinforcement corrosion and the subsequent disintegration of concrete. Steel fibre reinforced concrete has been increasingly used as the railway tunnel lining material but it is not clear if discrete steel fibres can still pick up and transfer stray current in the same way as conventional steel reinforcement and lead to similar corrosion reactions. The corrosion behaviour of steel fibres was investigated through voltammetry tests and electrochemical impedance spectroscopy. The presence of high concentration chloride ions was found to increase the pitting corrosion tendency of steel fibres in simulated concrete pore solutions and mortar specimens. The chloride threshold level for corrosion of steel fibres in concrete is approximately 4% NaCl (by mass of cement) which is significantly higher than that of conventional steel reinforcement.