Provenance and technology investigation of Agia Sophia bricks, Istanbul, Turkey

Moropoulou, A; Cakmak, A; Polikreti, K

dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Cakmak, A	en
dc.contributor.author	Polikreti, K	en
dc.date.accessioned	2014-03-01T01:18:15Z
dc.date.available	2014-03-01T01:18:15Z
dc.date.issued	2002	en
dc.identifier.issn	0002-7820	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14896
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0036479229&partnerID=40&md5=9dcd38497af8c493ae98420d27500995	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	Clay	en
dc.subject.other	Differential thermal analysis	en
dc.subject.other	Neutron activation analysis	en
dc.subject.other	Pore size	en
dc.subject.other	Porosity	en
dc.subject.other	Quartz	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Statistical methods	en
dc.subject.other	Tensile strength	en
dc.subject.other	Thermogravimetric analysis	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Multivariate statistics	en
dc.subject.other	Brick	en
dc.title	Provenance and technology investigation of Agia Sophia bricks, Istanbul, Turkey	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Bricks from the Agia Sophia in Istanbul, Turkey, were investigated to better formulate a plan for restoration. According to an ancient text, these bricks are extremely light and were manufactured on the island of Rhodes. Results of neutron activation analysis, grouped by multivariate statistics, show that the brick samples do not correlate with clays thought to be local and used in contemporary churches in Istanbul. The bricks are similar to those used in the Great Basilica of Rhodes. However, the Agia Sophia bricks are lighter (45% porosity) than the bricks from the other churches (35% porosity). The Agia Sophia bricks are made of a noncalcareous, fine paste with quartz temper, fired at low temperature (similar to750degreesC). The exceptional characteristic is their homogeneity and small pore-size distribution (0.3-0.8 mum). The tensile strength of the dome bricks is unexpectedly high (up to 1.3 MPa), even though the bricks have high porosity.	en
heal.publisher	AMER CERAMIC SOC	en
heal.journalName	Journal of the American Ceramic Society	en
dc.identifier.isi	ISI:000173859800012	en
dc.identifier.volume	85	en
dc.identifier.issue	2	en
dc.identifier.spage	366	en
dc.identifier.epage	372	en