Non-destructive evaluation of cement-based materials from pressure-stimulated electrical emission

dc.contributor.author	Κυριαζόπουλος, Αντώνιος	el
dc.contributor.author	Αναστασιάδης, Κίμων	el
dc.contributor.author	Τριάντης, Δήμος Α.	el
dc.contributor.author	Brown, Christopher J.	en
dc.date.accessioned	2015-06-06T16:35:52Z
dc.date.available	2015-06-06T16:35:52Z
dc.date.issued	2015-06-06
dc.identifier.uri	http://hdl.handle.net/11400/15337
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.sciencedirect.com/science/article/pii/S0950061810005830#	el
dc.subject	Cement--Testing
dc.subject	Nondestructive testing
dc.subject	Structural health monitoring
dc.subject	Δοκιμή τσιμέντου
dc.subject	Laboratory testing
dc.subject	Εργαστηριακές δοκιμές
dc.subject	Micro-cracks
dc.subject	Μικρορωγμές
dc.subject	Μη καταστροφικοί έλεγχοι
dc.subject	NDT
dc.subject	Pressure-stimulated currents
dc.subject	Διεγερμένη πίεση ρευμάτων
dc.subject	Διαρθρωτική παρακολούθηση της υγείας
dc.title	Non-destructive evaluation of cement-based materials from pressure-stimulated electrical emission	en
heal.type	journalArticle
heal.secondaryTitle	preliminary results	en
heal.classification	Materials science
heal.classification	Civil engineering
heal.classification	Επιστήμη των Υλικών
heal.classification	Πολιτική μηχανική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85082094
heal.classificationURI	http://skos.um.es/unescothes/C00606
heal.classificationURI	N/A-Επιστήμη των Υλικών
heal.classificationURI	N/A-Πολιτική μηχανική
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh2008100250
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85092221
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh2009006088
heal.identifier.secondary	ISSN: 09500618
heal.identifier.secondary	DOI: 10.1016/j.conbuildmat.2010.11.053
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Πολιτικών Μηχανικών Τ.Ε και Μηχανικών Τοπογραφίας & Γεωπληροφορικής Τ.Ε.	el
heal.publicationDate	2011-04
heal.bibliographicCitation	Kyriazopoulos, A., Anastasiadis, C., Triantis, D. and Brown, C. (2011). Non-destructive evaluation of cement-based materials from pressure-stimulated electrical emission: preliminary results. "Construction and Building Materials" 25(4), April 2011. pp. 1980-1990. Available from: http://www.sciencedirect.com/science/article/pii/S0950061810005830#. [Accessed 17/12/2010]	en
heal.abstract	This paper introduces the possibility of in situ assessment of loading and remaining strength in concrete structures by means of measuring discharge of electric current from loaded specimens. The paper demonstrates that the techniques have been applied to other rock-like materials, but that for the first time they are applied to cement-based materials and a theoretical model is proposed in relation to the appearance of electrical signals during sample loading and up to fracture. A series of laboratory experiments on cement mortar specimens in simple uniaxial compression, and subsequently in bending - hence displaying both tension and compression - are described and show clear correlations between resulting strains and currents measured. Under uniaxial loading there is a well-defined relationship between the pressure-stimulated current (PSC) as a result of a monotonic mechanical loading regime. Similar results are observed in the three-point bending tests where a range of loading regimes is studied, including stepped changes in loading. While currents can be measured at low strains, best results seem to be obtained when strains approach and exceed yield stress values. This technique clearly has immense potential for structural health monitoring of cement-based structures. Both intermittent and continuous monitoring becomes possible, and given an ongoing campaign of monitoring, remaining strength can be estimated.	en
heal.publisher	Elsevier Ltd. All rights reserved	en
heal.journalName	Construction and Building Materials	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true