Atmospheric corrosion of steel reinforcing bars produced by various manufacturing processes

Zitrou, E; Nikolaou, J; Tsakiridis, PE; Papadimitriou, GD

dc.contributor.author	Zitrou, E	en
dc.contributor.author	Nikolaou, J	en
dc.contributor.author	Tsakiridis, PE	en
dc.contributor.author	Papadimitriou, GD	en
dc.date.accessioned	2014-03-01T01:25:57Z
dc.date.available	2014-03-01T01:25:57Z
dc.date.issued	2007	en
dc.identifier.issn	0950-0618	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17844
dc.subject	Atmospheric corrosion	en
dc.subject	Reinforcing concrete bars	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Atmospheric corrosion	en
dc.subject.other	Optical microscopy	en
dc.subject.other	Reinforced concrete	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Steel	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Corrosion layers	en
dc.subject.other	Manufacturing processes	en
dc.subject.other	Mineralogical composition	en
dc.subject.other	Reinforcing concrete bars	en
dc.subject.other	Bars (metal)	en
dc.title	Atmospheric corrosion of steel reinforcing bars produced by various manufacturing processes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.conbuildmat.2006.06.004	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.conbuildmat.2006.06.004	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The aim of the present investigation is to evaluate the effect of manufacturing process upon the performance of reinforcing steel bars against atmospheric corrosion. Reinforcing steel bars produced by different manufacturing methods were exposed to the atmosphere in Athens for different periods of time. The progress of corrosion was evaluated by measuring the thickness of the corrosion layer formed on the surface of the bars. The morphology of the corroded layer was studied by optical and scanning electron microscopy (SEM), while X-ray diffraction analysis was used to identify the mineralogical composition of the corrosion products. Independently of the manufacturing process used, the main corrosion product formed was lepidocrocite (gamma-FeOOH), followed closely by akaganeite (beta-FeOOH) and goethite (alpha-FeOOH). Furthermore, it was found that the surface condition and the initial oxide layer on the steel bars, which is closely related to the manufacturing process, played a major role in the development of corrosion in atmosphere. Work-hardened reinforcing steel bars were found very sensitive to exhibition in the usual atmospheric conditions, followed by the Tempcore steel bars. The hot-rolled bars, either unalloyed or microalloyed with vanadium, presented the best corrosion behavior. (c) 2006 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Construction and Building Materials	en
dc.identifier.doi	10.1016/j.conbuildmat.2006.06.004	en
dc.identifier.isi	ISI:000245498000003	en
dc.identifier.volume	21	en
dc.identifier.issue	6	en
dc.identifier.spage	1161	en
dc.identifier.epage	1169	en