• 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; [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 ...
    • Alite-belite-ye'elimite cements: Effect of dopants on the clinker phase composition and properties 

      Zea-Garcia, Jesus D.; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel (2018-10-30)
      Clinkers with alite-belite-ye'elimite (ABY) are considered as eco-friendly cements. Clinkering (2 Kg) of two types of ABY clinkers was optimized: standard-ABY, with CaF2 and ZnO as dopants (32.6 wt% alite, 30.4 wt% β-C2S ...
    • Aluminum Hydroxide Gel Characterization within a Calcium Aluminate Cement Paste by Combined Pair Distribution Function and Rietveld Analyses 

      Cuesta-Garcia, Ana Maria; Ichikawa, Rodrigo U.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; [et al.] (Elsevier, 2017-06)
      There are many commercially important multiphase materials which contain amorphous phases, such as cement pastes, porcelains, glass-ceramics or pharmaceutical compounds. However, the analysis of amorphous phase(s) within ...
    • 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; [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. ...
    • Amorphous determination in calcium sulfoaluminate materials by external and internal methods 

      García-Maté, Marta; Santacruz-Cruz, Maria Isabel; Cuesta-Garcia, Ana Maria; León-Reina, Laura; García-Aranda, Miguel Ángel; [et al.] (ICE Publishing, 2014)
      External standard methodology has been successfully applied to quantify the known amounts of amorphous component that are increasingly added to cement-related materials. The consistency and accuracy of the methodology were ...
    • Belite cements and their activation 

      Cuesta-Garcia, Ana Maria; Ayuela, Andrés; García-Aranda, Miguel Ángel (Elsevier, 2020-11)
      Belite cements, BCs, containing mainly belite, alite and calcium aluminates, are currently used as low heat cements. These binders produce high amounts of C–S–H gel and have very good durability properties which are reviewed. ...
    • Belite hydration at high temperature and pressure by in situ synchrotron powder diffraction 

      Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; Cuesta-Garcia, Ana Maria; Fraga-López, Edmundo; Shirani, Shiva; [et al.] (2020-10-16)
      Portland cements are currently used as Oil‐Well‐Cements for the sheath between the metal casing and the borehole. At high pressures and temperatures, the resulting C-S-H gel(s) is partly unstable and it can react to give ...
    • Calcium aluminate cement conversion analysed by ptychographic nanotomography 

      Shirani, Shiva; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Diaz, Ana; Trtrik, Pavel; [et al.] (Elsevier, 2020-08-17)
      Calcium aluminate cements are used for special applications but are nowadays banned for general structural purposes due to the calcium aluminate hydrate conversion, that has led, for concretes fabricated with high water ...
    • Chemistry and Mass Density of Aluminum Hydroxide Gel in Eco-Cements by Ptychographic X-ray Computed Tomography 

      Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Trtik, Pavel; Da Silva, Julio C.; [et al.] (ACS, 2017)
      Eco-cements are a desirable alternative to ordinary Portland cements because of their lower CO2 footprints. Some ye’elimite-based ecocements are attracting a lot of interest. Understanding the reasons for the mechanical ...
    • Clinkering and hydration of belite-ye'elimite-alite cement 

      Londono-Zuluaga, Diana; Tobón, Jorge Iván; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles (Elsevier, 2017)
      Some belite-ye´elimite-ferrite (BYF) cements present low mechanical strengths mainly due to the slow reactivity of belite. A solution to this problem may be the activation of BYF clinkers by preparing them with a coexistence ...
    • A comparative study of experimental configurations in synchrotron pair distribution function 

      Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Cuesta-Garcia, Ana Maria (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 ...
    • Difracción de rayos-x (DRX) y cementos: desde la investigación hasta el control de calidad 

      Garcia-Mate, Marta; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel (2019-06-20)
      Los materiales de construcción son componentes complejos de gran interés comercial. Por ello, el conocimiento cuantitativo de su mineralogía a través de la difracción de rayos X (DRX) es de crucial importancia para optimizar ...
    • Effect of boron and water-to-cement ratio on the performances of laboratory prepared Belite-Ye'elimite-Ferrite (BYF) cements 

      Pérez bravo, Raquel; Morales-Cantero, Alejandro; Bruscolini, Marguerita; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; [et al.] (2021)
      The effect of superplasticiser, borax and the water-to-cement ratio on BYF hydration and mechanical strengths has been studied. Two laboratory-scale BYF cements—st-BYF (with -C2S and orthorhombic C4A3 S) and borax-activated ...
    • Effect of calcium sulfate source on the hydration of calcium sulfoaluminate eco-cement 

      García-Maté, Marta; Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; Losilla, Enrique R.; García-Aranda, Miguel Ángel; [et al.] (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 ...
    • Experimental and theoretical high pressure study of calcium hydroxyaluminate phases 

      Cuesta-Garcia, Ana Maria; Pawel, Rejmak; Ayuela, Andres; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; [et al.] (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 ...
    • High-Throughput Synthesis of Pillared-Layered Magnesium Tetraphosphonate Coordination Polymers: Framework Interconversions and Proton Conductivity Studies 

      Pérez Colodrero, Rosario Mercedes; Ruiz Salcedo, Inés; Bazaga García, Montse; Barouda, Eleni; Papadaki, Maria; [et al.] (MDPI, www.mdpi.com/journal/inorganics, 2018-09-11)
      Novel pillared-layered framework materials were synthesized by high-throughput or microwave-assisted methodology that contain Mg2+ and the zwitterionic linker HDTMP (hexamethylenediamine-N,N,N0,N0-tetrakis(methylenephosphonic ...
    • 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; [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 of C4AF in the presence of other phases: A synchrotron X-ray powder diffraction study 

      Cuesta-Garcia, Ana Maria; Santacruz-Cruz, Maria Isabel; Sanfeliz-Garcia, Susana; Fauth, François; García-Aranda, Miguel Ángel; [et al.] (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 

      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 ...