Properties and hydration of blended cements with calcareous diatomite

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dc.contributor.author Kastis, D en
dc.contributor.author Kakali, G en
dc.contributor.author Tsivilis, S en
dc.contributor.author Stamatakis, MG en
dc.date.accessioned 2014-03-01T01:24:54Z
dc.date.available 2014-03-01T01:24:54Z
dc.date.issued 2006 en
dc.identifier.issn 0008-8846 en
dc.identifier.uri http://hdl.handle.net/123456789/17499
dc.subject Blended cements (D) en
dc.subject Diatomite en
dc.subject Hydration (A) en
dc.subject Mechanical properties (C) en
dc.subject Physical properties (C) en
dc.subject.classification Construction & Building Technology en
dc.subject.classification Materials Science, Multidisciplinary en
dc.subject.other Blended cements en
dc.subject.other Diatomite en
dc.subject.other Hydrated products en
dc.subject.other Amorphous materials en
dc.subject.other Hydration en
dc.subject.other Mortar en
dc.subject.other Scanning electron microscopy en
dc.subject.other Silica en
dc.subject.other X ray diffraction en
dc.subject.other Cements en
dc.title Properties and hydration of blended cements with calcareous diatomite en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.cemconres.2006.05.005 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.cemconres.2006.05.005 en
heal.language English en
heal.publicationDate 2006 en
heal.abstract In this paper the effect of diatomite addition on blended cement properties and hydration was studied. Calcareous diatomaceous rocks of Zakynthos Island, Ionian Sea, containing mainly CaCO3 and amorphous silica of biogenic origin with the form of opal-A were used. Cement mortars and pastes, with 0%, 10%, 20% and 35% replacement of cement with the specific diatomite, were examined. Strength development, water demand and setting time were determined in all samples. In addition, XRD, SEM and weight loss at 350 degrees C were applied in order to study the hydration products and the hydration rate in the cement-diatomite pastes. Blended cements, having up to 10% diatomite content, develop the same compressive strength, as the corresponding Portland cement, while the presence of diatomite leads to an increase of the paste water demand. Diatomite is characterized as natural pozzolana, as it satisfies the requirements of EN 197 1 concerning the active silica content. The pozzolanic nature of the diatomite results to the formation of higher amounts of hydrated products, specifically at the age of 28 days. (C) 2006 Elsevier Ltd. All rights reserved. en
heal.journalName Cement and Concrete Research en
dc.identifier.doi 10.1016/j.cemconres.2006.05.005 en
dc.identifier.isi ISI:000241712200005 en
dc.identifier.volume 36 en
dc.identifier.issue 10 en
dc.identifier.spage 1821 en
dc.identifier.epage 1826 en

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