RT Conference Proceedings
T1 Clinkering of calcium sulfoaluminate clinkers: polymorphism of ye'elimite
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 García-Aranda, Miguel Ángel
A1 Santacruz-Cruz, María Isabel
A1 Cuesta-García, Ana María
A1 Zea-Garcia, Jesus D.
A1 Londono-Zuluaga, Diana
A1 García-Maté, Marta
A1 Álvarez-Pinazo, Gema
K1 Cemento
AB The manufacture of CSA cements is more environmentally friendly than that of OPC as it releasesless CO2. This reduction depends on CSA composition and is due to three factors: i) less emissionsfrom decarbonation in the kilns; ii) lower clinkering temperature, consequently less fuel is needed, andiii) it is easier to grind, implying a depletion in indirect emissions.CSA cements are prepared by mixing the clinker with different amounts of calcium sulfate as a setregulator. Their main performances are fast setting time (followed by a rapid hardening), good chemicalresistance and, depending on the amount of the added sulfate source they can work asshrinkage controllers.CSA cements present a wide range of phase assemblages, but all of them contain over 50 wt% ofye'elimite (C4A3s) jointly with belite (C2S), tetracalcium aluminoferrite (C4AF) and other minorcomponents such as CA, Cs, CsH2 and so on [1]. Ye'elimite is also included (~25 wt%) in BYF (Belite-Ye'elimite-Ferrite) or BAY (Belite-Alite-Ye'elimite) clinkers.Ye'elimite has a sodalite type structure with general composition, M4[T6O12]X. Stoichiometric ye'elimitecrystal structure at room temperature will be described in detailed. The role of different amounts ofminor elements on the synthetic procedure and crystal structures will be also presented [2,3].This keynote will be also focused on a revision of the effect of raw materials on the mineralogicalcomposition of CSA, BYF and BAY. Specifically, the role of main elements contents in the ye'elimiteformation in these systems will be described. Moreover, the effect of minor elements on thepolymorphism of both ye'elimite and belite, especially on BYF and BAY clinkers, will be presented[4,5,6].
YR 2018
FD 2018
LK https://hdl.handle.net/10630/16175
UL https://hdl.handle.net/10630/16175
LA spa
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Spanish MINECO and FEDER [BIA2017-82391-R] research project and I3 [IEDI-2016-0079] program.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026