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dc.creatorIlić, Biljana
dc.creatorRadonjanin, Vlastimir
dc.creatorMalešev, Mirjana
dc.creatorZdujić, Miodrag
dc.creatorMitrović, Aleksandra
dc.date.accessioned2018-04-11T10:12:08Z
dc.date.available2018-04-11T10:12:08Z
dc.date.issued2017
dc.identifier.issn0950-0618
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/2341
dc.description.abstractThe effects of thermally (MK) or mechanically activated kaolin (AK) on the compressive strength of mortars and microstructure of pastes were investigated. Mortar mixtures, in which 10%, 20% and 30% of ordinary Portland cement (OPC) was replaced by either MK or AK, were prepared (w/b of 0.5) and ordinary (age 2, 28 or 90 days) and autoclave cured. Hydration products were determined by X-ray diffraction (XRD) and differential thermal analysis/thermal gravimetry (DTA/TG) analysis, while microstructure was investigated by mercury intrusion porosimetry (MIP). MK substitution increases the compressive strength of ordinary-cured mortars, as a result of the higher content of reactive silica that caused more pronounced pozzolanic reaction, as well as by effective refinement of their pore structure. Positive effects on the compressive strength could be achieved up to 30% substitution of OPC by MK. The OPC substitution by AK resulted in lower strengths of ordinary-cured mortars, compared to both MK mortars and reference. Higher specific surface area and finer particles of AK were insufficient to compensate, through filler effect, lower pozzolanic reaction and additional negative influence of the kaolinite presence. The highest compressive strength was obtained for mortar with 10% of AK (relative strength of 94%). In comparison to the reference, autoclaved MK and AK mortars, exhibited lower compressive strength, as a consequence of increasing the hydrogarnet formation, instead of tobermorite. The highest strength was achieved for mortar with 10% of AK.en
dc.format133 (2017) 243-252
dc.languageen
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/36017/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45001/RS//
dc.rightsrestrictedAccess
dc.sourceConstruction and Building Materialsen
dc.subjectMetakaolin
dc.subjectMechanically activated kaolin
dc.subjectOrdinary curing
dc.subjectAutoclave curing
dc.titleStudy on the addition effect of metakaolin and mechanically activated kaolin on cement strength and microstructure under different curing conditionsen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractРадоњанин, Властимир; Малешев, Мирјана; Здујић, Миодраг; Илић, Биљана; Митровић, Aлександра;
dc.citation.spage243
dc.citation.epage252
dc.citation.volume133
dc.identifier.wos000393002800026
dc.identifier.doi10.1016/j.conbuildmat.2016.12.068
dc.identifier.scopus2-s2.0-85006966256
dc.type.versionpublishedVersion


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