Chemistry:AFm phase
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Revision as of 04:03, 5 August 2021 by imported>PolicyEnforcerIA (attribution)
Short description: Alumina Ferrite monosulfate or calcium aluminate monosulfate
An AFm phase is an "alumina, ferric oxide, monosulfate" phase, or aluminate ferrite monosulfate, or Al2O3, Fe2O3 mono, in cement chemist notation. AFm phases are important in the hydration of hydraulic cements.
They are crystalline hydrates with general, simplified formula 3CaO·(Al,Fe)2O3·CaSO4·nH2O.
They form inter alia when tricalcium aluminate (C3A: 3CaO·Al2O3) reacts with dissolved calcium sulfate (CaSO4).
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