Exploitation of poor Greek kaolins: Strength development of metakaolin concrete and evaluation by means of k-value

Badogiannis, E; Papadakis, VG; Chaniotakis, E; Tsivilis, S

dc.contributor.author	Badogiannis, E	en
dc.contributor.author	Papadakis, VG	en
dc.contributor.author	Chaniotakis, E	en
dc.contributor.author	Tsivilis, S	en
dc.date.accessioned	2014-03-01T01:20:30Z
dc.date.available	2014-03-01T01:20:30Z
dc.date.issued	2004	en
dc.identifier.issn	0008-8846	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15937
dc.subject	Compressive strength	en
dc.subject	Concrete	en
dc.subject	k-Value	en
dc.subject	Kaolin	en
dc.subject	Metakaolin	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Carbonation	en
dc.subject.other	Compressive strength	en
dc.subject.other	Fly ash	en
dc.subject.other	Heat treatment	en
dc.subject.other	Hydrochloric acid	en
dc.subject.other	Kaolin	en
dc.subject.other	Portland cement	en
dc.subject.other	Silica	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Admixtures	en
dc.subject.other	K-value	en
dc.subject.other	Metakaolins	en
dc.subject.other	Pozzolanic materials	en
dc.subject.other	Concretes	en
dc.title	Exploitation of poor Greek kaolins: Strength development of metakaolin concrete and evaluation by means of k-value	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.cemconres.2003.11.014	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.cemconres.2003.11.014	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	In this paper, the effect of metakaolin on concrete properties is investigated. A poor Greek kaolin was thermally treated at defined conditions, and the produced metakaolin was superfine ground. In addition, a commercial metakaolin of high purity was used. Eight mixture proportions were used to produce high-performance concrete, where metakaolin replaced either cement or sand in percentages of 10% or 20% by weight of the control cement content. The strength development of metakaolin concrete was evaluated using the efficiency factor (k-value). The produced metakaolin as well as the commercial one imparts a similar behavior with respect to the concrete strength. Both metakaolins exhibit very high k-values (close to 3.0 at 28 days) and are characterised as highly reactive pozzolanic materials that can lead to concrete production with an excellent performance. (C) 2004 Elsevier Ltd. All tights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Cement and Concrete Research	en
dc.identifier.doi	10.1016/j.cemconres.2003.11.014	en
dc.identifier.isi	ISI:000224017100017	en
dc.identifier.volume	34	en
dc.identifier.issue	6	en
dc.identifier.spage	1035	en
dc.identifier.epage	1041	en