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Structure, Atomistic Simulations, and Phase Transition of Stoichiometric Yeelimite
(ACS publications, 2013)
ABSTRACT: Yeelimite, Ca4[Al6O12]SO4, is outstanding as an aluminate
sodalite, being the framework of these type of materials flexible and dependent
on ion sizes and anion ordering/disordering. On the other hand, yeelimite ...
Rietveld quantitative phase analysis with molybdenum radiation
(Cambridge Core, 2014)
Building materials are very complex samples of worldwide importance; hence quantitative knowledge
of their mineralogical composition is necessary to predict performances. Rietveld quantitative phase
analysis (RQPA) allows ...
Hydration mechanisms of two polymorphs of synthetic ye'elimite
(Elsevier, 2014-05-26)
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 behavior
of ...
Rheological and hydration characterization of calcium sulfoaluminate cement pastes
(2015-05-14)
Calcium sulfoaluminate (CSA) cements are currently receiving a lot of attention because their manufacture produces less CO2 than ordinary Portland cement (OPC). However, it is essential to
understand all parameters which ...
Clinkering and early age hydration characterization of Belite-Alite Calcium Sulfoaluminate (BACSA) cements
(2015-10-26)
In this work, four BACSA clinkers with different compositions (belite ~ 70-55 wt %, alite ~ 10-15 wt % and ye’elimite ~ 10-15 wt %) were synthesized (at laboratory scale). Lime, gypsum, kaolin and sand were used as raw ...
Synthesis and scaled-up of non-active and active Belite-Alite-Ye'elimite clinker (BAY)
(2017-05-17)
Ordinary Portland cement (OPC) is an environmentally contentious material, as for every ton of OPC produced, ~0.97 tons of CO2 are released. This opens the need of designing new formulations of cements formed by low calcite ...
Hydration study of alite-ye’elimite-anhydrite phases associated to BAY cement
(2017-10-18)
An alternative to decrease CO2 emissions from OPC production consists on the development of a new kind of eco-cements composed by less calcite demanding phases, such as belite and ye'elimite. That is the case of ...
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 ...
Advanced synchrotron studies of ye'elimite-based cement pastes
(2018-07-18)
Synchrotron characterization techniques [1] are being used to study Portland-based cements and recently also CSA and related cements. A key property of these techniques is that they do not require sample preparation, so ...
In-situ hydration study of sulfobelite eco-cements
(2013-09-12)