The effect of natural zeolites on the early hydration of Portland cement

Perraki, Th; Kakali, G; Kontoleon, F

dc.contributor.author	Perraki, Th	en
dc.contributor.author	Kakali, G	en
dc.contributor.author	Kontoleon, F	en
dc.date.accessioned	2014-03-01T01:19:36Z
dc.date.available	2014-03-01T01:19:36Z
dc.date.issued	2003	en
dc.identifier.issn	1387-1811	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15602
dc.subject	Cement	en
dc.subject	Hydration	en
dc.subject	Zeolite	en
dc.subject.classification	Chemistry, Applied	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Nanoscience & Nanotechnology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Fourier transform infrared spectroscopy	en
dc.subject.other	Hydration	en
dc.subject.other	Portland cement	en
dc.subject.other	Pozzolan	en
dc.subject.other	Synthesis (chemical)	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Hydration rate	en
dc.subject.other	Zeolites	en
dc.subject.other	cement	en
dc.subject.other	hydration	en
dc.subject.other	zeolite	en
dc.title	The effect of natural zeolites on the early hydration of Portland cement	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1387-1811(03)00369-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1387-1811(03)00369-X	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	In this work, the effect of zeolite, coming from Pentalofos area, Thrace, Greece, on the hydration of cement is examined. The experimental part comprises three stages: In the first stage a complete mineralogical characterization of the zeolite was performed. In addition, the pozzolanic reactivity of the zeolite was evaluated on the basis of Chapelle test. In the second stage, pastes of Portland cement, incorporating 0%, 10%, 20% and 30% per weight of fine zeolite were prepared. The pastes were water-cured at 20 degreesC, for 1, 2, 7 and 28 days. Finally, the hydration rate and products were studied by means of X-ray diffraction and Fourier transform infrared spectroscopy, in combination with thermoanalytical methods (TG/DTG and differential thermal analysis). As it is concluded, the examined zeolite consists mainly of "heulandite type II" and shows a good pozzolanic reactivity (0.555 g of Ca(OH)(2) per gram of zeolite, according to the Chapelle test). The incorporation of zeolite in cement contributes to the consumption of Ca(OH)(2) formed during the cement hydration and the formation of cement-like hydrated products. (C) 2003 Elsevier Inc. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Microporous and Mesoporous Materials	en
dc.identifier.doi	10.1016/S1387-1811(03)00369-X	en
dc.identifier.isi	ISI:000184324100020	en
dc.identifier.volume	61	en
dc.identifier.issue	1-3	en
dc.identifier.spage	205	en
dc.identifier.epage	212	en