An experimental study of the mechanical behaviour of the 'conchyliates' shell-stone: Some irregularities of the size effects

Kourkoulis, SK

dc.contributor.author	Kourkoulis, SK	en
dc.date.accessioned	2014-03-01T01:35:10Z
dc.date.available	2014-03-01T01:35:10Z
dc.date.issued	2011	en
dc.identifier.issn	0039-2103	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20977
dc.subject	'conchyliates'	en
dc.subject	compression	en
dc.subject	marble	en
dc.subject	natural building stones	en
dc.subject	shell-stone	en
dc.subject	size effect	en
dc.subject.classification	Materials Science, Characterization & Testing	en
dc.subject.other	'conchyliates'	en
dc.subject.other	Ancient Greeks	en
dc.subject.other	Archaeological site	en
dc.subject.other	Building stone	en
dc.subject.other	Elasticity moduli	en
dc.subject.other	Experimental studies	en
dc.subject.other	In-depth knowledge	en
dc.subject.other	Laboratory test	en
dc.subject.other	Mechanical behaviour	en
dc.subject.other	natural building stones	en
dc.subject.other	Partial restoration	en
dc.subject.other	Peak stress	en
dc.subject.other	Self-similar	en
dc.subject.other	shell-stone	en
dc.subject.other	Size effects	en
dc.subject.other	Strain energy density	en
dc.subject.other	Stress-strain	en
dc.subject.other	Structural elements	en
dc.subject.other	Building materials	en
dc.subject.other	Construction equipment	en
dc.subject.other	Elasticity	en
dc.subject.other	Size determination	en
dc.subject.other	Strain energy	en
dc.subject.other	Mechanical engineering	en
dc.title	An experimental study of the mechanical behaviour of the 'conchyliates' shell-stone: Some irregularities of the size effects	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1475-1305.2009.00618.x	en
heal.identifier.secondary	http://dx.doi.org/10.1111/j.1475-1305.2009.00618.x	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	A detailed experimental study of the size effect, i.e. of the dependence of the mechanical properties on the size of the (self-similar) specimens used for the laboratory tests is presented in this paper for the case of a relatively soft natural building stone called 'conchyliates' (shell-stone). 'Conchyliates' was used by ancient Greeks for the erection of the Zeus Temple at the Olympia archaeological site. The motive of the study was the need of the scientists working for a partial restoration of the monument for an in-depth knowledge of the mechanical behaviour of both the original building material of the monument as well as of the material that could be used for the completion of damaged structural elements. During the study various classes of cylindrical 'conchyliates' specimens were subjected to uniaxial (unconfined) compression. It was concluded that the dependence of the peak stress of the material on the size of the specimen is not only very strong but it appears to be, also, non-monotonous. In addition it was indicated that the size of the specimens also influences the elasticity modulus as well as the strain energy density in a more or less similar manner. On the contrary it is concluded that the slope of the strain energy density plotted versus strain is not seriously affected by the size of the specimen, at least for the working-load portion of the stress-strain graph. © 2009 Blackwell Publishing Ltd.	en
heal.publisher	WILEY-BLACKWELL	en
heal.journalName	Strain	en
dc.identifier.doi	10.1111/j.1475-1305.2009.00618.x	en
dc.identifier.isi	ISI:000295918500032	en
dc.identifier.volume	47	en
dc.identifier.issue	SUPPL. 1	en
dc.identifier.spage	e344	en
dc.identifier.epage	e356	en