RT Journal Article
T1 On the early hydration of cubic ye’elimite: New insights from time-resolved in situ MAS NMR spectroscopy
A1 Paul, Geo
A1 Cuesta-García, Ana María
A1 Boccaleri, Enrico
A1 Cassino, Claudio
A1 Marchese, Leonardo
K1 Hidratación
AB Two polymorphs of ye’elimite are known to exist in calcium sulfoaluminate cements, namely, orthorhombic(iron free), C4A3$ and cubic/pseudo-cubic (iron incorporated), C4A3-xFx$ forms. The very early hydrationbehaviour of cubic ye’elimite (nominal composition: Ca3.8Na0.2Al5.6Fe0.2Si0.2O12SO4) has been investigated usinga time-resolved in situ multi-nuclear (1H, 27Al, 23Na and 29Si) MAS NMR spectroscopic approach. The study showsthat the reaction pathway and the intermediate species formed are substantially different from those that areobserved during the hydration of orthorhombic ye’elimite, and the rate as well as the nature of hydrationproducts are dictated by the presence or the absence of limestone (CaCO3). Furthermore, the detection of diversetransient species as well as the uncovering of different kinetic behaviour during the early hydration of cubicye’elimite illustrate the advantages of time-resolved in situ MAS NMR experimental approach for fingerprintinghydrated phases.
PB Elsevier
YR 2022
FD 2022-12-02
LK https://hdl.handle.net/10630/25612
UL https://hdl.handle.net/10630/25612
LA spa
NO Materials Letters 333 (2023) 133630
NO This work was supported by (research grant; P18-RT-720) the Andalusian Regional Government, Spain.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026