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KUZIELOVA, E. TATARKO, M. SLANÝ, M. ŽEMLIČKA, M. MÁSILKO, J. NOVOTNÝ, R. PALOU, M.
Originální název
Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperatures
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
The study of early and middle stages of hydration in the systems composed of Portland cement Class G (PC) - silica fume (SF) - metakaolin (MK) and PC - SF - blast furnace slag (BFS) was performed by Isothermal calorimetry, Thermogravimetric, X-ray diffraction, and Fourier Transform Infrared analyses in the mid-IR region. The influence of composition, temperature (25, 60, and 80 degrees C), and hydration media (water and geothermal solution) was investigated. Geothermal solution delayed main hydration, however, considering the times of the calorimetric maxima at 25 degrees C, it led to the formation of hydration products with more polymerized structures in larger amounts than during the hydration process using water. At higher temperatures, the deceleration effect of the geothermal solution became less evident, nevertheless higher degree of silica polymerization and more hydration products were found in samples that were hydrated in water. Regardless of the hydration temperature, the hydration carried out in geothermal solution became more effective already after 40 h. The effect of fine additives advanced by higher temperatures resulted in accelerated hydration represented by faster depletion of gypsum. The presence of SO4-AFm and CO3-AFm phases was confirmed during the deceleration period of the hydration process using water and geothermal solution, respectively.
Klíčová slova
Early and middle stage of hydration; Silica fume; Metakaolin; Ground granulated blast -furnace slag; Geothermal water
Autoři
KUZIELOVA, E.; TATARKO, M.; SLANÝ, M.; ŽEMLIČKA, M.; MÁSILKO, J.; NOVOTNÝ, R.; PALOU, M.
Vydáno
10. 2. 2023
Nakladatel
PERGAMON-ELSEVIER SCIENCE LTD
Místo
OXFORD
ISSN
0375-6505
Periodikum
GEOTHERMICS
Ročník
108
Číslo
únor
Stát
Spojené království Velké Británie a Severního Irska
Strany počet
13
URL
https://www.sciencedirect.com/science/article/pii/S0375650522002772
BibTex
@article{BUT181477, author="Eva {Kuzielova} and Miroslav {Tatarko} and Michal {Slaný} and Matúš {Žemlička} and Jiří {Másilko} and Radoslav {Novotný} and Martin {Palou}", title="Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperatures", journal="GEOTHERMICS", year="2023", volume="108", number="únor", pages="13", doi="10.1016/j.geothermics.2022.102632", issn="0375-6505", url="https://www.sciencedirect.com/science/article/pii/S0375650522002772" }