RT Journal Article
T1 Hydration mechanisms of two polymorphs of synthetic ye'elimite
A1 Cuesta-García, Ana María
A1 Álvarez-Pinazo, Gema
A1 Sanfeliz-Garcia, Susana
A1 Peral, Inma
A1 García-Aranda, Miguel Ángel
A1 Gómez-de-la-Torre, María de los  Ángeles
K1 Cemento
AB Ye'elimite is the main phase in calcium sulfoaluminate cements and also a key phase in sulfobelite cements.However, its hydrationmechanismis not well understood. Here we reported newdata on the hydration behaviorof ye'elimite using synchrotron and laboratory powder diffraction coupled to the Rietveld methodology. Bothinternal and external standard methodologies have been used to determine the overall amorphous contents.We have addressed the standard variables: water-to-ye'elimite ratio and additional sulfate sources of differentsolubilities. Moreover, we report a deep study of the role of the polymorphism of pure ye'elimites. The hydrationbehavior of orthorhombic stoichiometric and pseudo-cubic solid-solution ye'elimites is discussed. In theabsence of additional sulfate sources, stoichiometric-ye'elimite reacts slower than solid-solution-ye'elimite, andAFm-type phases are the main hydrated crystalline phases, as expected. Moreover, solid-solution-ye'elimiteproduces higher amounts of ettringite than stoichiometric-ye'elimite. However, in the presence of additionalsulfates, stoichiometric-ye'elimite reacts faster than solid-solution-ye'elimite.
PB Elsevier
SN 0008-8846
YR 2014
FD 2014-05-26
LK http://hdl.handle.net/10630/13931
UL http://hdl.handle.net/10630/13931
LA eng
NO Cement and Concrete Research 63 (2014) 127–136
NO This work has been supported by Junta de Andalucía throughP11-FQM-7517 research grant and by Spanish MINECO throughMAT2010-16213 research grant, which is co-funded by FEDER.ALBA synchrotron is thanked for providing synchrotron beamtimeat BL04-MSPD beamline.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026