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Luminescence Control of Pozzolanic Activity of Metakaolin

Number of journal: №6-2016


УДК: 666.9.04:535.37


AbstractAbout AuthorsReferences
The study of spectra of photoluminescence of metakaolin has been conducted; two bands of optically active centers (OAC) Fe3+ и [UO2] 2+ have been identified. It is established that the change in the intensity of the band OAC Fe3+ in the photoluminescence spectrum is connected with the change in the phase composition and pozzolanic activity of metakaolin. The intensity of the band OAC Fe3+ in the photoluminescence spectrum of metakaolin depends on a number of factors: temperature of heat treatment, content of Fe2O3 in the composition of metakaolin, kaolin genesis (kaolin by granites and gneisses, alkaline kaolin) and structural-crystallochemical features of kaolinite. It is shown that after heat treatment in the range of 850–950°С the pozzlanic activity of metakaolin reduces and, at that, the intensity of band OAC ОАЦ Fe3+ increases sharply. An indicator of intensity of the band OAC Fe3+ in the photoluminescence spectrum is recommended as an express-method for control over the metakaolin quality.
R.A. PLATOVA1 , Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
V.A. RASSULOV2 , Candidate of Sciences (Geology and Mineralogy);
Yu.T. PLATOV1 , Doctor of Sciences (Engineering);
T.M. ARGYNBAEV3 , General Director,
Z.V. STAFEEVA3 , Deputy Director for Production

1 Plekhanov Russian University of Economics (36, Stremyanny Lane, 117997, Moscow, Russian Federation)
2 All-Russian Scientific-Research Institute of Mineral Resources named after N.M.Fedorovsky (31, Staromonetny lane, 119017, Moscow, Russian Federation)
3 LLC «Plast-Rifey» (1, Magnitogorskiy Trakt, Plast city, Chelyabinsk Region, Russian Federation)

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