• 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 ...
    • Advanced synchrotron studies of ye'elimite-based cement pastes 

      García-Aranda, Miguel Ángel; Cuesta, Ana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel (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 ...
    • Alite-belite-ye'elimite cements: Effect of dopants on the clinker phase composition and properties 

      Zea-Garcia, Jesus D.; Aranda, Miguel A.G.; De la Torre, Angeles G.; 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 ...
    • Clinkering of calcium sulfoaluminate clinkers: polymorphism of ye'elimite 

      Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Cuesta, Ana; Zea-Garcia, Jesus D.; [et al.] (2018)
      The manufacture of CSA cements is more environmentally friendly than that of OPC as it releases less CO2. This reduction depends on CSA composition and is due to three factors: i) less emissions from decarbonation in the ...
    • Early hydration study of standard and doped Alite-Belite-Ye’elimite (ABY) cements through Synchrotron Radiation 

      Zea-Garcia, Jesus D.; Cuesta, Ana; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Vallcorba, O.; [et al.] (2018-07-09)
      The manufacturing of ye'elimite-rich cements releases from 15 to 37%, depending on their composition, less CO2 to the atmosphere than ordinary Portland cement (OPC). BYF cements containing belite, ye’elimite and ferrite ...
    • Processing and characterisation of calcium sulphoaluminate ecocements containing Microencapsulated Phase Change Materials 

      Santacruz-Cruz, Maria Isabel; Romero-Espinosa, Andrea; Sanfelix, Susana G.; Cuesta, Ana; De la Torre, Ángeles G.; [et al.] (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) ...
    • Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomography 

      Cuesta, Ana; De la Torre, Angeles G.; Santacruz-Cruz, Maria Isabel; Diaz, Ana; Trtik, Pavel; [et al.] (IUCr, 2019)
      Mortars and concretes are ubiquitous materials with very complex hierarchical microstructures. To fully understand their main properties and to decrease their CO2 footprint, a sound description of their spatially resolved ...
    • Synchrotron Pair Distribution Function analyses of Ye’elimite-based pastes 

      Cuesta, Ana; Aranda, Miguel A.G.; Santacruz-Cruz, Maria Isabel; De la Torre, Angeles G.; Zea-Garcia, Jesus D. (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 ...
    • Synchrotron x-ray pair distribution function: A tool to characterize cement gels 

      Cuesta, Ana; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; [et al.] (2018-07-06)
      Cement matrices contain large amounts of crystalline phases jointly with amorphous and/or nanocrystalline phases. Consequently, their analyses are very challenging. Synchrotron powder diffraction in combination with the ...
    • Water-to-cement ratio influence on low-carbon cements performances 

      Santacruz-Cruz, Maria Isabel; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Cuesta, Ana; Aranda, Miguel A.G.; [et al.] (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 ...
    • X-ray diffraction, cements and environment, three worlds in one 

      Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Londono-Zuluaga, Diana; García-Maté, Marta; [et al.] (2017-12-13)
      This keynote lecture will be focused on the strategies for reducing CO2 emissions in the cement production. Concretely, the production of ecocements with optimised formulations that yield reductions in CO2 emissions of up ...