Listar por autor "Vallcorba, Oriol"
Mostrando ítems 1-7 de 7
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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 ... -
Multiscale understanding of tricalcium silicate hydration reactions
Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Vallcorba, Oriol; Dapiaggi, Monica; Sanfélix, Susana G.; García-Aranda, Miguel Ángel[et al.] (Nature Publishing Group, 2018-06)
Tricalcium silicate, the main constituent of Portland cement, hydrates to produce crystalline calcium hydroxide and calcium-silicate-hydrates (C-S-H) nanocrystalline gel. This hydration reaction is poorly understood at ... -
Pair distribution function studies in cementitious systems
Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Vallcorba, Oriol; García-Aranda, Miguel Ángel[et al.] (2017-10-24)
The analysis of amorphous/nanocrystalline phase(s) within cement matrices that contain high amounts of crystalline phase(s) is very challenging. Synchrotron techniques can be very useful to characterize such complex samples.1 ... -
Quantitative phase Analisis: A comparative study of Mo and Cu strictly monochromatic radiations
Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Álvarez-Pinazo, Gema; Santacruz-Cruz, Maria Isabel; Vallcorba, Oriol; García-Aranda, Miguel Ángel[et al.] (2016-06-27)
A comparison of the Rietveld quantitative phase analyses (RQPA) obtained using Cu-Kα1, Mo-Kα1, and synchrotron strictly monochromatic radiations is presented. The main aim is to test a simple hypothesis: high energy ... -
Synchrotron Radiation Pair Distribution Function Analysis of Gels in Cements
Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Vallcorba, Oriol; García-Aranda, Miguel Ángel[et al.] (MDPI, 2017)
The analysis of atomic ordering in a nanocrystalline phase with small particle sizes, below 5 nm, is intrinsically complicated because of the lack of long-range order. Furthermore, the presence of additional crystalline ... -
Synthesis and structural characterization of 2-D layered copper(II) styrylphosphonate coordination polymers
Maranescu, Bianca; Visa, Aurelia; Ilia, Gheorghe; Simon, Zeno; Demadis, Konstantinos D.; Perez-Colodrero, Rosario Mercedes; Cabeza-Diaz, Aurelio; Vallcorba, Oriol; Rius, Jordi; Choquesillo-Lazarte, Duane[et al.] (Taylor & Francis, 2014-04-11)
We report the synthesis, physicochemical characterization, and crystal structure of Cu-SP (SP = styrylphosphonic acid, H2O3PCH=CH2(C6H5)), the first reported example of a metal derivative of SP. The starting SP acid was ... -
The use of mo and cu monochromatic radiations for quantitative phase analysis: study of the accuracy
Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Álvarez-Pinazo, Gema; Santacruz-Cruz, Maria Isabel; Vallcorba, Oriol; García-Aranda, Miguel Ángel[et al.] (2016-06-27)
Cement hydration is a very complex process in which crystalline phases are dissolving in water and after supersaturation hydrated crystalline and amorphous phases precipitate. Great efforts are being made to develop ...