Thaumasite form of sulfate attack in limestone cement mortars: A study on long term efficiency of mineral admixtures

Skaropoulou, A; Tsivilis, S; Kakali, G; Sharp, JH; Swamy, RN

dc.contributor.author	Skaropoulou, A	en
dc.contributor.author	Tsivilis, S	en
dc.contributor.author	Kakali, G	en
dc.contributor.author	Sharp, JH	en
dc.contributor.author	Swamy, RN	en
dc.date.accessioned	2014-03-01T01:32:02Z
dc.date.available	2014-03-01T01:32:02Z
dc.date.issued	2009	en
dc.identifier.issn	0950-0618	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20033
dc.subject	Long-term performance	en
dc.subject	Mineral admixtures	en
dc.subject	Portland limestone cement	en
dc.subject	Sulfate attack	en
dc.subject	Thaumasite	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Cements	en
dc.subject.other	Compressive strength	en
dc.subject.other	Concretes	en
dc.subject.other	Durability	en
dc.subject.other	Fly ash	en
dc.subject.other	Limestone	en
dc.subject.other	Mortar	en
dc.subject.other	Plaster	en
dc.subject.other	Silica	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Slags	en
dc.subject.other	Sulfate minerals	en
dc.subject.other	Ultrasonic testing	en
dc.subject.other	Velocity measurement	en
dc.subject.other	Visual communication	en
dc.subject.other	Long-term performance	en
dc.subject.other	Mineral admixtures	en
dc.subject.other	Portland limestone cement	en
dc.subject.other	Sulfate attack	en
dc.subject.other	Thaumasite	en
dc.subject.other	Minerals	en
dc.title	Thaumasite form of sulfate attack in limestone cement mortars: A study on long term efficiency of mineral admixtures	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.conbuildmat.2008.11.004	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.conbuildmat.2008.11.004	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Concrete and mortar made from limestone cement may exhibit a lack of durability due to the formation of thaumasite. The addition of minerals that improve the concrete durability is expected to slow down the formation of thaumasite. in this work the effect of natural pozzolana, fly ash, ground granulated blast-furnace slag and metakaolin on the thaumasite formation in limestone cement mortar is examined. A limestone cement, containing 15% w/w limestone, was used. Mortar specimens were prepared by replacing a part of limestone cement with the above minerals. The specimens were immersed in a 1.8% MgSO4 solution and cured at 5 and 25 degrees C. The status of the samples after a storage period of 5 years was reported based on visual inspection, compressive strength, mass measurements, ultrasonic pulse velocity measurements and analytical techniques. It is concluded that the use of specific minerals, as partial replacement of cement, inhibits thaumasite formation in limestone cement mortar. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Construction and Building Materials	en
dc.identifier.doi	10.1016/j.conbuildmat.2008.11.004	en
dc.identifier.isi	ISI:000266054500029	en
dc.identifier.volume	23	en
dc.identifier.issue	6	en
dc.identifier.spage	2338	en
dc.identifier.epage	2345	en