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X-Ray powder diffraction laboratory @ University of Málaga (UMA)
(2016-06-27)
X-Ray Powder Diffraction (XRPD) laboratory is a facility placed at Servicios Centrales de apoyo a la Investigación (SCAI) at University of Malaga (UMA) http://www.scai.uma.es/. This facility has three XRPD diffractometers ...
Mechanism of stabilization of dicalcium silicate solid solution with aluminium
(ELSEVIER, 2013-11-11)
Stoichiometric dicalcium silicate, Ca2SiO4, displays a well-known polymorphism with temperature. When
this phase is doped by a range of elements, belite, one of the main phases of cements, is generated. Here,
we thoroughly ...
Synchrotron X-ray pair distribution function analysis of calcium silicate pastes
(2021)
The analysis of nanocrystalline and amorphous phases in cement matrices which
contain high amounts of crystalline phases is a very challenging task. In this respect,
pair distribution function (PDF) methodology in ...
Portland and belite cement hydration acceleration by C-S-H seeds with variable w/c ratios
(Materials, 2022)
The acceleration of very early age cement hydration by C-S-H seeding is getting attention from scholars and field applications because the enhanced early age features do not compromise later age performances. This acceleration ...
Rietveld Quantitative Phase Analysis of Oil Well Cement: in Situ Hydration Study at 150 Bars and 150 °C
(MDPI - Publisher of Open Access Journals, 2019-06)
Oil and gas well cements are multimineral materials that hydrate under high pressure
and temperature. Their overall reactivity at early ages is studied by a number of techniques
including through the use of the consistometer. ...
Rietveld Quantitative Phase Analysis of OPC Clinkers, Cements and Hydration Products
(Mineralogical Society of America, 2012)
A comparative study of experimental configurations in synchrotron pair distribution function
(MDPI - Publisher of Open Access Journals, 2019-04-25)
The identification and quantification of amorphous components and nanocrystalline phases
with very small crystal sizes, smaller than ~3 nm, within samples containing crystalline phases is
very challenging. However, this ...
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 ...
X-ray Total Scattering Study of Phases Formed from Cement Phases Carbonation
(MDPI, 2021)
Carbonation in cement binders has to be thoroughly understood because it affects phase
assemblage, binder microstructure and durability performance of concretes. This is still not the case as
the reaction products can ...