The effect of chlorides on the thaumasite form of sulfate attack in limestone cement concrete

Sotiriadis, K; Nikolopoulou, E; Tsivilis, S

dc.contributor.author	Sotiriadis, K	en
dc.contributor.author	Nikolopoulou, E	en
dc.contributor.author	Tsivilis, S	en
dc.date.accessioned	2014-03-01T02:47:06Z
dc.date.available	2014-03-01T02:47:06Z
dc.date.issued	2010	en
dc.identifier.issn	02555476	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33000
dc.subject	Chloride	en
dc.subject	Concrete	en
dc.subject	Portland limestone cement	en
dc.subject	Sulfate attack	en
dc.subject	Thaumasite	en
dc.subject.other	Cement concrete	en
dc.subject.other	Chloride	en
dc.subject.other	Chloride contents	en
dc.subject.other	Concrete specimens	en
dc.subject.other	Mass measurements	en
dc.subject.other	Ordinary Portland cement	en
dc.subject.other	Portland cement concretes	en
dc.subject.other	Storage solutions	en
dc.subject.other	Sulfate attack	en
dc.subject.other	Sulfate content	en
dc.subject.other	Thaumasite	en
dc.subject.other	Thaumasite form of sulfate attack	en
dc.subject.other	Visual assessments	en
dc.subject.other	XRD	en
dc.subject.other	XRD analysis	en
dc.subject.other	Chlorine compounds	en
dc.subject.other	Compressive strength	en
dc.subject.other	Curing	en
dc.subject.other	Deterioration	en
dc.subject.other	Portland cement	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Sulfate minerals	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Limestone	en
dc.title	The effect of chlorides on the thaumasite form of sulfate attack in limestone cement concrete	en
heal.type	conferenceItem	en
heal.identifier.primary	10.4028/www.scientific.net/MSF.636-637.1349	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/MSF.636-637.1349	en
heal.publicationDate	2010	en
heal.abstract	In this paper the effect of chlorides on the thaumasite form of sulfate attack in limestone cement concrete is studied. Concrete specimens made from ordinary Portland cement and two Portland limestone cements (limestone content 15% and 35% respectively) were prepared. After 28 days of curing the specimens were immersed in six solutions of various sulfate and chloride content and stored at 5°C. Visual assessment of the specimens, mass measurements and compressive strength tests took place for a period of 24 months. XRD method was used to identify thaumasite in the deteriorated parts of the specimens. All measurements showed that Portland cement concrete exhibits a lower degree of deterioration than Portland limestone cement concrete. Specimen disintegration was more severe, the higher the limestone contents of the cements and the higher the sulfate content of the corrosive storage solutions. Chlorides play an inhibitory role, delaying the deterioration of the concrete specimens. XRD analysis showed the presence of thaumasite at the deteriorated parts of the specimens after nine months of curing. © (2010) Trans Tech Publications.	en
heal.journalName	Materials Science Forum	en
dc.identifier.doi	10.4028/www.scientific.net/MSF.636-637.1349	en
dc.identifier.volume	636-637	en
dc.identifier.spage	1349	en
dc.identifier.epage	1354	en