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Water-to-cement ratio influence on low-carbon cements performances
(2019)
Portland Cement (PC) is the most important active ingredient in most of the construction concrete. However, the PC production is associated with a high carbon dioxide release (around 1 ton of CO2 per ton of PC). One approach ...
Synchrotron Pair Distribution Function analyses of Ye’elimite-based pastes
(2018-10-15)
The study of nanocrystalline phase atomic ordering is intrinsically complicated. The presence of additional crystalline phase(s) exacerbates this challenge. Here, we use the synchrotron pair distribution function (PDF) to ...
Effect of different retarders on the hydration of calcium sulfoaluminate eco-cement pastes
(2014-07-09)
The manufacture of Calcium SulfoAluminate (CSA) cements is more environmentally friendly than that of OPC [1] as their production releases up to 40% less CO2 than the latter. The main performances of CSA cements are fast ...
Experimental and theoretical high pressure study of calcium hydroxyaluminate phases
(Elsevier, 2017)
Five calcium hydroxyaluminate phases have been investigated by synchrotron powder diffraction at high-pressure:
two hydrogarnets, kuzelite, stratlingite and ettringite. The obtained bulk modulus, K0, for kuzelite,
stratlingite ...
Processing and characterisation of calcium sulphoaluminate ecocements containing Microencapsulated Phase Change Materials
(2018-07-17)
Calcium SulphoAluminate (CSA) cements can be considered as ecocements, since their production releases up to 40% less CO2 than Ordinary Portland Cement (OPC) [1]. In addition, Microencapsulated Phase Change Materials (MPCM) ...
Effect of calcium sulfate source on the hydration of calcium sulfoaluminate eco-cement
(2014)
The availability of cements, including eco-cements, with tailored mechanical properties is very important
for special applications in the building industry. Here we report a full study of the hydration of calcium
sulfoaluminate ...
Hydration of Belite-Ye’elimite-Ferrite(BYF) cements with different calcium sulfate sources
(ICE publishing, 2016-07)
Belite-Ye’elimite-Ferrite cements, BYF, are a sustainable alternative to OPC to reduce CO2 emissions. The aim of this research is to understand the influence of the sulfate source on the hydration of two laboratory-prepared ...
Hydration of C4AF in the presence of other phases: A synchrotron X-ray powder diffraction study
(Elsevier, 2015)
Hydration behaviour of C4AF in selected experimental conditions has been determined. C4AF has been
hydrated in the absence and presence of gypsum, two polymorphs of ye’elimite and different water/solid
ratios. C4AF in ...
Hydration Reactions and Mechanical Strength Developments of Iron- Rich Sulfobelite Eco-cements
(2013)
Belite calcium sulfoaluminate (BCSA) cements are low-CO2 building materials. However, their hydration behavior and its effect on mechanical properties have still to be clarified. Here, we report a full multitechnique study ...
In-situ early age hydration of cement-based materials by synchrotron X-ray powder diffraction
(2015-07-01)
Cement based binders are building materials of worldwide importance. Since these samples are very complex, the knowledge/control of their mineralogical composition are essential to design and predict materials with ...