Ceramics-Silikáty 58, (4) 243 - 248 (2014) |
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THERMOANALYTICAL EVENTS AND ENTHALPIES OF PHASES AND
SYSTEMS OF THE CHEMISTRY AND TECHNOLOGY OF CONCRETE - PART 2. HYDRATED CEMENTS
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Drábik Milan 1,2, Gáliková Ľubica 1, Eva Scholzová 1,
Eva Hadzimová 1
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1 Institute of Inorganic Chemistry Slovak Academy of Sciences, 845 36 Bratislava, Slovakia
2 Department of Inorganic Chemistry Faculty of Science Comenius University, 842 15 Bratislava, Slovakia
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Keywords: Calcium-silicate-sulfate-aluminate hydrates , Technological compositions , Thermal analysis, Decomposition enthalpies
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Essential focus of the study has been to acquire thermoanalytical events, incl. enthalpies of decompositions - ΔH, of
technological materials based on two types of Portland cements. The values of thermoanalytical events and also ΔH of
probes of technological compositions, if related with the data of a choice of minerals of calcium-silicate-sulfate-aluminate
hydrates, served as a valued input for the assessment of phases present and phase changes due to the topical hydraulic
processes. The results indicate mainly the effects of "standard humidity" or "wet storage" of the entire hydration/hydraulic
treatment, but also the presence of cement residues alongside calcium-silicate-sulfate-aluminate hydrates (during the tested
period of treatment). "A diluting" effect of unhydrated cement residues upon the values of decomposition enthalpies in the
studied multiphase system is postulated and discussed |
Record in: Scopus | |
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