Listar QICM - Artículos por autor "Álvarez-Pinazo, Gema"
Mostrando ítems 1-11 de 11
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Accuracy in Rietveld quantitative phase analysis: a comparative study of strictly monochromatic Mo and Cu radiations
León-Reina, Laura; García-Maté, Marta; Álvarez-Pinazo, Gema; Santacruz-Cruz, Maria Isabel
; Vallcorba, Oriol; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel[et al.] (Willey online Library, 2016)
This study reports 78 Rietveld quantitative phase analyses using Cu K 1, Mo K 1 and synchrotron radiations. Synchrotron powder diffraction has been used to validate the most challenging analyses. From the results for ... -
Aluminum-rich belite sulfoaluminate cements: clinkering and early age hydration
Martín-Sedeño, M. Carmen; Cuberos, Antonio J M; Gomez-de-la-Torre, Maria de los Angeles; Álvarez-Pinazo, Gema; Ordónez, Luis M; Gateshki, Milen; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2009)
Belite sulfoaluminate (BSA) cements have been proposed as environmentally friendly building materials, as their production may release up to 35% less CO2 into the atmosphere when compared to ordinary Portland cements. ... -
Hydration mechanisms of two polymorphs of synthetic ye'elimite
Cuesta-Garcia, Ana Maria; Álvarez-Pinazo, Gema; Sanfeliz-Garcia, Susana; Peral, Inma; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles[et al.] (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 ... -
Hydration of Belite-Ye’elimite-Ferrite(BYF) cements with different calcium sulfate sources
Álvarez-Pinazo, Gema; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles (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 Reactions and Mechanical Strength Developments of Iron- Rich Sulfobelite Eco-cements
Álvarez-Pinazo, Gema; Santacruz-Cruz, Maria Isabel; León-Reina, Laura; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles (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 study of sulfobelite cements by synchrotron powder diffraction
Álvarez-Pinazo, Gema; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Santacruz-Cruz, Maria Isabel; Ramirez-Losilla, Enrique; Sanfélix, Susana G; Fauth, François[et al.] (Karen Scrivener, 2014)
Eco-friendly belite calcium sulfoaluminate (BCSA) cement hydration behavior is not yet well understood. Here,we report an in-situ synchrotron X-ray powder diffraction study for the first hours of hydration of BCSA ... -
Rietveld quantitative phase analyses of SRM 2686a: a standard Portland clinker
García-Maté, Marta; Álvarez-Pinazo, Gema; León-Reina, Laura; Gomez-de-la-Torre, Maria de los Angeles (2018-10-03)
SRM 2686a is a NIST reference Portland clinker with reported mineralogical analysis from powder diffraction and electron microscopy. This sample is used in ASTM C1365 test method for Rietveld quantitative phase analysis ... -
Rietveld quantitative phase analysis of yeelimite-containing cements
Álvarez-Pinazo, Gema; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Santacruz-Cruz, Maria Isabel; Ramirez-Losilla, Enrique; Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; García-Aranda, Miguel Ángel[et al.] (Karen Scrivener, 2012)
Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate, CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium sulfoaluminate, ... -
Rietveld quantitative phase analysis of Yeelimite-containing cements
Álvarez-Pinazo, Gema; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Santacruz-Cruz, Maria Isabel; Ramirez-Losilla, Enrique; Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2012-03-26)
Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate, CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium sulfoaluminate, ... -
Rietveld quantitative phase analysis with molybdenum radiation
Cuesta-Garcia, Ana Maria; Álvarez-Pinazo, Gema; García-Maté, Marta; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura[et al.] (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 ... -
Structure of stratlingite and effect of hydration methodology on microstructure
Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles; Álvarez-Pinazo, Gema; Cabeza-Diaz, Aurelio; Cuesta-Garcia, Ana Maria; Sanz, Jesus; García-Aranda, Miguel Ángel[et al.] (ICE publishing, 2015)
Stratlingite, Ca4Al2(OH)12[AlSi(OH)8]2•2H2O, is an AFm phase which appears as hydration product of aluminum-rich cements. These binders may be calcium aluminate cements, calcium sulfoaluminate cements and also Belite Calcium ...