Приказ основних података о документу

dc.creatorMitrović, Aleksandra
dc.creatorKomljenović, Miroslav M.
dc.creatorIlić, Biljana
dc.date.accessioned2022-04-18T15:01:38Z
dc.date.available2022-04-18T15:01:38Z
dc.date.issued2009
dc.identifier.issn0367-598X
dc.identifier.urihttp://rims.institutims.rs/handle/123456789/93
dc.description.abstractEnvironmental concerns coming from the high energy consumption and CO2 emission associated with cement production have brought about pressures to reduce cement consumption through the use of new materials which can be applied for substitution of a part of clinker in Portland cement or a part of cement in concrete. One of the materials that satisfy requirements of sustainable development and, when added in appropriate shares, improves the properties of cement, mortars and concrete, is metakaolin (MK), a processed pozzolana. The main and widely used raw material for production of metakaolin is kaolin clay. MK is produced by calcination or "thermal activation" of kaolin clay. The possibilities for metakaolin production are strongly related to the characteristics of the used kaolin clay. The samples of domestic kaolin clay used in this study were provided by factories Kaolin, Valjevo, and Keramika, Mladenovac. Chemical composition, mineralogical composition and thermal properties of these samples were determined. Thermal analysis (simultaneous recording of TG, DTG and DTA signals) was carried out at the temperature range from 20 to 1200 degrees C. For both clays the results show that the loss of mass occurred in two stages. The dehydroxillation of kaolinite and formation of metakaolin occurred in the second stage. Minerals quartz and kaolinite are dominant in the clay Kaolin, Valjevo. Dehydroxillation of kaolinite and formation of metakaolin took place in the temperature range 350-800 degrees C. This clay does not have clearly distinct exothermic and endothermic peaks. Clay from Keramika, Mladenovac, has a higher content of the kaolinite mineral, i.e. 81.51%. The dehydroxillation of kaolinite and fori-nation of metakaolin occured in the temperature range 400-700 degrees C. This clay has two distinct endothermic peaks at 60 and 490 degrees C. All these results show that both clays can be used for production of metakaolin.en
dc.publisherSavez hemijskih inženjera, Beograd
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceHemijska industrija
dc.subjectMetakaolinen
dc.subjectKaolin clayen
dc.subjectCement productionen
dc.titleResearch of possibilities for use domestic kaolin clays for production of metakaolinen
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage113
dc.citation.issue2
dc.citation.other63(2): 107-113
dc.citation.rankM23
dc.citation.spage107
dc.citation.volume63
dc.identifier.doi10.2298/HEMIND0902107M
dc.identifier.fulltexthttp://rims.institutims.rs/bitstream/id/315/90.pdf
dc.identifier.scopus2-s2.0-77952895783
dc.identifier.wos000267876100006
dc.type.versionpublishedVersion


Документи

Thumbnail

Овај документ се појављује у следећим колекцијама

Приказ основних података о документу