Abstract
KGa-1b kaolinite and STx-1b montmorillonite, as well as their mechanical mixture in 1:1 mass ratio, have been experimentally investigated by total reflection IR spectroscopy (IR-ATR) at different moisture modes. The aim of this research was to investigate the spectral features during the formation of water films on the surface of individual minerals, and in mixtures. The analysis of mineral composition of the wetted samples has been carried out by decomposing the experimental spectra into the linear combination of basic spectra of H2O and the minerals used. The obtained dependences of the decomposition coefficients on moisture allow studying the peculiarities of the formation of a water layer on mineral particles, studying the dynamics of moisture redistribution between mineral particles in mixtures, and evaluating the plastic characteristics of clays.
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