Thermomechanical evaluation and thermodynamic simulation via FactSage of NCCs and ULCCs with different MgO content

Warmuz, Karina; Ziewiec, Krzysztof; Madej, Dominika

doi:10.1016/j.jeurceramsoc.2023.09.036

Cited by 1 publication

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“…Cementy glinowo-wapniowe [CACs] to wyodrębniona grupa cementów, która odróżnia się od klasycznych cementów portlandzkich [OPC] składem chemicznym opartym głównie o CaO i Al 2 O 3 (1). Szczególne właściwości aplikacyjne CAC sprawiają, że są one doceniane w przemyśle monolitycznych materiałów ogniotrwałych ze względu na wysoką wytrzymałość, ogniotrwałość, długotrwałą eksploatację i możliwość pracy w szerokim zakresie wysokich temperatur (2)(3). Podczas procesu hydratacji główne oraz zasadę jego działania wraz z metodyką pomiarową i analizą matematyczną przedstawiono w pracy (10).…”

Section: Wprowadzenieunclassified

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Classical and new insights into the methodology for characterizing the hydration of calcium aluminate cements

Madej,

Kruk

2024

Cement Wapno Beton

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Calcium aluminate cements [CACs] are typically used for cast-in-place structural work and high temperature applications due to their unique properties. The CaAl2O4 [CA] and Sm-doped CaAl2O4 [CA:Sm] cement clinkers obtained by the solid-state reaction were investigated using X-ray powder diffraction [XRD], scanning electron microscopy [SEM] and energy dispersive X-ray spectroscopy [EDS] and luminescence spectroscopy. The XRD result shows that the powders are pure CaAl2O4. As a next step, hydration behavior of as-synthesized cements was investigated by both classical methods including isothermal calorimetry and XRD, and the state-of-the-art techniques including time resolved electrochemical impedance spectroscopy [TR-EIS] and luminescence spectroscopy. The TR-EIS investigations were obtained by the Impedance Camera over the range of 100 Hz to 1 MHz frequencies. The evolution of obtained EIS and luminescence spectra easily manifested the beginning of the new solid formation and the hydration kinetics. The dynamics of hydration processes were also successfully traced by the changes of the luminescence intensity from the Sm3+ ions. This technique seems to be complementary, and consistent with other methods implemented in the cement chemistry, especially to investigate e.g. hydration of ordinary Portland cements [OPCs] and other binders.

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“…(1). The special properties of CACs are of value in the monolithics refractory industries due to the high strength, refractoriness, long time performance and a possibility to operate at high temperature ranges and at variable temperatures (2)(3).…”

Section: Introductionmentioning

confidence: 99%

Classical and new insights into the methodology for characterizing the hydration of calcium aluminate cements

Madej,

Kruk

2024

Cement Wapno Beton

View full text Add to dashboard Cite

show abstract

Thermomechanical evaluation and thermodynamic simulation via FactSage of NCCs and ULCCs with different MgO content

Cited by 1 publication

References 54 publications

Classical and new insights into the methodology for characterizing the hydration of calcium aluminate cements

Classical and new insights into the methodology for characterizing the hydration of calcium aluminate cements

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