Deposition of; Labropoulos, KC; Katsiotis, NS

dc.contributor.author	Moropoulou, AI	en
dc.contributor.author	Labropoulos, KC	en
dc.contributor.author	Katsiotis, NS	en
dc.date.accessioned	2014-03-01T02:53:33Z
dc.date.available	2014-03-01T02:53:33Z
dc.date.issued	2012	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36409
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84856634020&partnerID=40&md5=7330aa7585c8d0000e6b913e8b2a45b8	en
dc.subject.other	Ground Penetrating Radar	en
dc.subject.other	Hagia Sophia	en
dc.subject.other	Historic data	en
dc.subject.other	Istanbul	en
dc.subject.other	Substrate structure	en
dc.subject.other	Void space	en
dc.subject.other	Adhesion	en
dc.subject.other	Geological surveys	en
dc.subject.other	Nondestructive examination	en
dc.subject.other	Plaster	en
dc.subject.other	Ground penetrating radar systems	en
dc.title	Application of ground penetrating radar for the assessment of the decay state of Hagia Sophia's mosaics	en
heal.type	conferenceItem	en
heal.publicationDate	2012	en
heal.abstract	Ground penetrating radar was used to assess the decay state of the mosaics at the south upper gallery of Hagia Sophia, Istanbul. These mosaics were plastered during the Ottoman period of the monument, but during recent conservation interventions part of the plaster layer has been removed. It has been revealed that cohesion problems may be encountered with the preserved mosaic at the perpendicular junction of two arches. In another area, GPR was employed to reveal the presence of underlying mosaics being below the plaster layer. There have been observed void spaces below this layer, indicating possible cohesion problems that need to be taken into consideration in case of future removal of the plaster. In addition, the Empress Zoe mosaic was scanned, verifying good overall cohesion and homogeneity of the mosaic and the substrate structure but also that there exist restored areas with new base mortar and tesserae, confirming historic data. © 2012 Taylor & Francis Group, London.	en
heal.journalName	Emerging Technologies in Non-Destructive Testing V - Proceedings of the 5th Conference on Emerging Technologies in NDT	en
dc.identifier.spage	25	en
dc.identifier.epage	30	en