The effect of temperature on thaumasite formation

Pipilikaki, P; Papageorgiou, D; Teas, Ch; Chaniotakis, E; Katsioti, M

dc.contributor.author	Pipilikaki, P	en
dc.contributor.author	Papageorgiou, D	en
dc.contributor.author	Teas, Ch	en
dc.contributor.author	Chaniotakis, E	en
dc.contributor.author	Katsioti, M	en
dc.date.accessioned	2014-03-01T01:29:19Z
dc.date.available	2014-03-01T01:29:19Z
dc.date.issued	2008	en
dc.identifier.issn	0958-9465	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19221
dc.subject	Limestone cement	en
dc.subject	Microstructure	en
dc.subject	Sodium sulphate	en
dc.subject	Sulphate attack	en
dc.subject	Temperature	en
dc.subject	Thaumasite	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Cement manufacture	en
dc.subject.other	Deterioration	en
dc.subject.other	Limestone	en
dc.subject.other	Mortar	en
dc.subject.other	Plaster	en
dc.subject.other	Portland cement	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Sodium	en
dc.subject.other	Sulfate minerals	en
dc.subject.other	Effect of temperatures	en
dc.subject.other	Limestone additions	en
dc.subject.other	Ordinary portland cements	en
dc.subject.other	Sodium sulphate	en
dc.subject.other	Sulphate attack	en
dc.subject.other	Surface damages	en
dc.subject.other	Thaumasite	en
dc.subject.other	Thaumasite formations	en
dc.subject.other	Cements	en
dc.title	The effect of temperature on thaumasite formation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.cemconcomp.2008.09.004	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.cemconcomp.2008.09.004	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	In this study mortars have been produced using ordinary Portland cement (CEM 1 - 32.5) and limestone cement with 15% limestone addition (CEM II/A-LL - 32.5). The mortars were immersed in a solution of 5% Na2SO4 at 5 degrees C. 10 degrees C and 20 degrees C for 1 year and the caused deterioration was visually observed on a regular basis. The deterioration product on the surface of the mortars has been identified as thaumasite by means of XRD, FT-IR, DTG and SEM/EDAX analyses. Mortars immersed in a solution of 5% Na2SO4 at 10 degrees C for a year suffered limited surface damage, which was identified as thaumasite formation and carbonation. Similar damage appeared for mortars immersed in a solution of 5% Na2SO4 at 5 degrees C for 6 months and that led to the conclusion that thaumasite formation is related inversely to the conservation temperature of the mortars. Finally, mortars immersed in a solution of 5% Na2SO4 at 20 degrees C for a year were intact and thaumasite could not be identified. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Cement and Concrete Composites	en
dc.identifier.doi	10.1016/j.cemconcomp.2008.09.004	en
dc.identifier.isi	ISI:000262010000013	en
dc.identifier.volume	30	en
dc.identifier.issue	10	en
dc.identifier.spage	964	en
dc.identifier.epage	969	en