Efficiency and countereffects of cleaning treatment on limestone surfaces - Investigation on the Corfu Venetian Fortress

Moropoulou, A; Kefalonitou, S

dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Kefalonitou, S	en
dc.date.accessioned	2014-03-01T01:17:46Z
dc.date.available	2014-03-01T01:17:46Z
dc.date.issued	2002	en
dc.identifier.issn	0360-1323	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14662
dc.subject	Architectural surfaces	en
dc.subject	Cleaning counteractions evaluation	en
dc.subject	Cleaning efficiency investigations	en
dc.subject	Cleaning treatments	en
dc.subject	Urban and marine pollution impact	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Ammonium compounds	en
dc.subject.other	Chelation	en
dc.subject.other	Decay (organic)	en
dc.subject.other	Deposition	en
dc.subject.other	Facades	en
dc.subject.other	Hydrogen peroxide	en
dc.subject.other	Limestone	en
dc.subject.other	Morphology	en
dc.subject.other	Solvents	en
dc.subject.other	Sulfur dioxide	en
dc.subject.other	X ray analysis	en
dc.subject.other	Encrustations	en
dc.subject.other	Surface cleaning	en
dc.subject.other	atmospheric pollution	en
dc.subject.other	building	en
dc.subject.other	cleaning	en
dc.title	Efficiency and countereffects of cleaning treatment on limestone surfaces - Investigation on the Corfu Venetian Fortress	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0360-1323(01)00059-2	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0360-1323(01)00059-2	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Surface alterations of the original limestone and the efficiency of several cleaning methods were investigated on the Corfu Venetian Fortress facade. Black crusts of gypsum dendrites and loose depositions or black-grey calcareous encrustations in combination with biological decay were identified as main decay processes. The cleaning treatments, chosen according to their acting on the stone surface, were: sepiolite for solvent action, ammonium bicarbonate for exchange action, EDTA for the chemical chelating action, hydrogen peroxide for chemical action on biological species and nylon brushes for physical action. Each cleaning method's efficiency and counteractions were evaluated by laboratory examinations concerning the morphology and the composition of the surface with SEM observations and X-ray microanalysis, before and after treatment and during ageing tests in sulphur dioxide and humidity atmosphere. The used methodology creates a sound basis for the evaluation and proper selection of a cleaning method, which should be highly efficient and with limited counteractions to the stone. (C) 2002 Published by Elsevier Science Ltd.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Building and Environment	en
dc.identifier.doi	10.1016/S0360-1323(01)00059-2	en
dc.identifier.isi	ISI:000177587100017	en
dc.identifier.volume	37	en
dc.identifier.issue	11	en
dc.identifier.spage	1181	en
dc.identifier.epage	1191	en