RT Conference Proceedings
T1 Early hydration study of standard and doped Alite-Belite-Ye’elimite (ABY) cements through Synchrotron Radiation
A1 Zea-Garcia, Jesus D.
A1 Cuesta-García, Ana María
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 García-Aranda, Miguel Ángel
A1 Vallcorba, Oriol
A1 Santacruz-Cruz, María Isabel
K1 Cemento
AB The manufacturing of ye'elimite-rich cements releases from 15 to 37%, depending on theircomposition, less CO2 to the atmosphere than ordinary Portland cement (OPC). BYF cementscontaining belite, ye’elimite and ferrite as main crystalline phases, are promising eco-friendly binders.Nevertheless, belite, its main phase, shows a slow hydrating behaviour and the mechanical strengthsare lower than OPC at early ages. Some alternatives to solve this problem are: i) forming alite jointlywith belite and ye’elimite during clinkering, Alite Belite Ye’elimite (ABY) clinkers. The hydration of aliteand ye’elimite would develop high mechanical strengths at early ages, and belite contributes to latercuring times; ii) a second alternative is the stabilisation of alpha forms of belite using dopants such asboron named here after dABY.In this work, two different types of ABY clinkers (standard and doped) have been prepared andcharacterized to understand their different hydration mechanisms at the same water-to-cement (w/c)ratio. The clinkers have been prepared using CaF2 and ZnO as mineralizers, and borax as dopantagent to stabilize alpha forms of belite (’H-C2S). Afterwards, 14 wt% of anhydrite (as soluble sulphatesource) was added to prepare the corresponding cements. Finally, the hydration study was performedat w/c ratio of 0.5. Here, an in-situ hydration study using synchrotron X-ray powder diffraction (SXRPD)for the first 14 hours of hydration is reported. Moreover, these results will be combined with the ex-situlaboratory X-ray powder diffraction study (LXRPD) at 1 day of hydration and calorimetric results.Rietveld quantitative phase analysis has been used to establish the phase evolution across the time.
YR 2018
FD 2018-07-09
LK https://hdl.handle.net/10630/16160
UL https://hdl.handle.net/10630/16160
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.MINECO ( BIA2017-82391-R), co-funded by FEDER, and I3 [IEDI-2016-0079].
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026