2026-06-05T14:21:03Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/161602026-02-03T12:25:06Zcom_10630_2254col_10630_37959
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Zea-Garcia, Jesus D.
author
Cuesta-García, Ana María
author
Gómez-de-la-Torre, María de los Ángeles
author
García-Aranda, Miguel Ángel
author
Vallcorba, Oriol
author
Santacruz-Cruz, María Isabel
2018-07-09T09:53:14Z
2018-07-09T09:53:14Z
2018-07-09
https://hdl.handle.net/10630/16160
The manufacturing of ye'elimite-rich cements releases from 15 to 37%, depending on their
composition, less CO2 to the atmosphere than ordinary Portland cement (OPC). BYF cements
containing 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 strengths
are lower than OPC at early ages. Some alternatives to solve this problem are: i) forming alite jointly
with belite and ye’elimite during clinkering, Alite Belite Ye’elimite (ABY) clinkers. The hydration of alite
and ye’elimite would develop high mechanical strengths at early ages, and belite contributes to later
curing times; ii) a second alternative is the stabilisation of alpha forms of belite using dopants such as
boron named here after dABY.
In this work, two different types of ABY clinkers (standard and doped) have been prepared and
characterized 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 dopant
agent to stabilize alpha forms of belite (’H-C2S). Afterwards, 14 wt% of anhydrite (as soluble sulphate
source) was added to prepare the corresponding cements. Finally, the hydration study was performed
at 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-situ
laboratory 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.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Cemento
Early hydration study of standard and doped Alite-Belite-Ye’elimite (ABY) cements through Synchrotron Radiation
conference output
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URL
https://riuma.uma.es/bitstreams/2a8c0fc0-2bc2-4d06-bbb4-bcad1025a67f/download
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503160cf68ecc45fbfe827bb57cb6b74
137161
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abstract-epdic16-Jesus David Zea Garcia.pdf