Criteria and methodology for the evaluation of conservation interventions on treated porous stone susceptible to salt decay

Moropoulou, A; Kouloumbi, N; Haralampopoulos, G; Konstanti, A; Michailidis, P

dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Kouloumbi, N	en
dc.contributor.author	Haralampopoulos, G	en
dc.contributor.author	Konstanti, A	en
dc.contributor.author	Michailidis, P	en
dc.date.accessioned	2014-03-01T02:42:13Z
dc.date.available	2014-03-01T02:42:13Z
dc.date.issued	2003	en
dc.identifier.issn	0300-9440	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30874
dc.subject	Aging tests	en
dc.subject	Conservation	en
dc.subject	Mechanical stone characteristics	en
dc.subject	Microstructural stone characteristics	en
dc.subject	Salt decay	en
dc.subject	Thermodynamics of crystallization	en
dc.subject.classification	Chemistry, Applied	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.other	Aging of materials	en
dc.subject.other	Bending strength	en
dc.subject.other	Compressive strength	en
dc.subject.other	Crystallization	en
dc.subject.other	Microstructure	en
dc.subject.other	Porosity	en
dc.subject.other	Porous materials	en
dc.subject.other	Surface treatment	en
dc.subject.other	Tensile strength	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Aging tests	en
dc.subject.other	Salt decay	en
dc.subject.other	Organic coatings	en
dc.title	Criteria and methodology for the evaluation of conservation interventions on treated porous stone susceptible to salt decay	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/S0300-9440(03)00110-3	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0300-9440(03)00110-3	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	Susceptibility of stone to salt decay is directly related to its microstructural and mechanical characteristics. In the present work, a porous stone from a quarry in Cyprus was examined. Samples of this stone were consolidated and protected with certain conservation materials. The modification of microstructural characteristics of the stone was evaluated by mercury intrusion porosimetry, while its mechanical characteristics were measured by compressive and bending strength tests. From these data, the susceptibility of Cyprus stone to salt (NaCl) decay was estimated. The values of crystallization pressure of NaCl were calculated and compared to the experimentally measured compressive and tensile strength of the stone, in order to examine the probability of stone disruption due to salt crystallization. The development of the phenomenon after coarse pores' filling with crystals, i.e. crystallization of salts in capillaries or mechanical failure of the stone, was determined by thermodynamic analysis. Additionally, artificial weathering tests of marine salt spray were performed for the evaluation of stone's durability after the conservation. The treated stone proved to be resistant to salt decay, as it presented ameliorated microstructural and mechanical characteristics, concerning decay due to soluble salt crystallization. The most possible thermodynamic scenario was small pores repletion with crystals, avoiding mechanical failure of the stone. (C) 2003 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Progress in Organic Coatings	en
dc.identifier.doi	10.1016/S0300-9440(03)00110-3	en
dc.identifier.isi	ISI:000187853600017	en
dc.identifier.volume	48	en
dc.identifier.issue	2-4	en
dc.identifier.spage	259	en
dc.identifier.epage	270	en