Steel rebars corrosion investigation with strain gages

Batis, G; Routoulas, Th

dc.contributor.author	Batis, G	en
dc.contributor.author	Routoulas, Th	en
dc.date.accessioned	2014-03-01T01:15:13Z
dc.date.available	2014-03-01T01:15:13Z
dc.date.issued	1999	en
dc.identifier.issn	0958-9465	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13388
dc.subject	strain gage	en
dc.subject	corrosion	en
dc.subject	reinforcing rebars	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Concretes	en
dc.subject.other	Corrosion	en
dc.subject.other	Corrosion protection	en
dc.subject.other	Electric charge	en
dc.subject.other	Metal casting	en
dc.subject.other	Mortar	en
dc.subject.other	Nondestructive examination	en
dc.subject.other	pH effects	en
dc.subject.other	Porosity	en
dc.subject.other	Strain gages	en
dc.subject.other	Concrete admixtures	en
dc.subject.other	Gravimetric weight	en
dc.subject.other	Reinforcing bar	en
dc.subject.other	Steel rebars	en
dc.subject.other	Volume changes	en
dc.subject.other	Steel	en
dc.title	Steel rebars corrosion investigation with strain gages	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0958-9465(98)00041-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0958-9465(98)00041-9	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The presentation of a new laboratory, non-destructive method of detection and checking the corrosion of steel rebars in mortar specimens is discussed in this paper. The method uses extensive meter sensors, such as the well known strain gages (SG) and is based on the phenomena of tension state, in which the mortar mass Comes near the rebar area, after the formation of corrosion products. The SG are embedded in reinforcing mortar specimens during casting. Specimens are immersed in a 3.5 wt% NaCl solution and a constant potential is applied between steel rebar and graphite electrode in order to obtain fast corrosion conditions. As the embedded SG are affected by volume changes, caused not only by corrosion products, all other disturbing parameters have been compensated for by the measurement method described. The method was applied in different types of mortar specimens in order to have test and verification results. The reliability of the technique was evaluated by measuring: (a) the gravimetric weight loss of the reinforcing steel bars; (b) the electrical charge flow through specimens; and (c) the porosity of mortar mass. The test results obtained indicate that the method is reliable and suitable for the laboratory study of the corrosion factors and the influence of concrete admixtures in corrosion protection. (C) 1999 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	Elsevier Science Ltd, Exeter, United Kingdom	en
heal.journalName	Cement and Concrete Composites	en
dc.identifier.doi	10.1016/S0958-9465(98)00041-9	en
dc.identifier.isi	ISI:000080361600002	en
dc.identifier.volume	21	en
dc.identifier.issue	3	en
dc.identifier.spage	163	en
dc.identifier.epage	171	en