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Mostrando ítems 1-12 de 12
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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 ... -
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 ... -
Clinkering, processing and characterisation of Alite-Belite-Ye’elimite eco-cements: from basic to applied science
Zea García, Jesús David (UMA Editorial, 2020-09-11)An eco-friendly industrial production is essential to protect our environment. The synthesis process of PC generates greenhouse gas emissions. Because of that, the cement industry is under increasing scrutiny to reduce CO2 ... -
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 ... -
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 ... -
Eco-cements containing Belite, Alite and Ye’elimite. Hydration and mechanical properties.
Londoño Zuluaga, Diana (UMA Editorial, 2018)Cement industry is one of the major contributors for greenhouse gases emissions, releasing about one ton of carbon dioxide per ton of ordinary portland cement (OPC) fabricated. For these reasons, there is a growing interest ... -
The effects of MgO, Na2O and SO3 on industrial clinkering process: phase composition, polymorphism, microstructure and hydration, using a multidisciplinary approach
Segata, Monica; Nicoletta, Marinoni; Matteo, Galimberti; Maurizio, Marchi; Marco, Cantaluppi; [et al.] (2019-07-02)The present investigation deals with how minor elements (their oxides: MgO, Na2O and SO3) in industrial kiln feeds affect (i) chemical reactions upon clinkering, (ii) resulting phase composition and microstructure ... -
Hydration development and thermal performance of calcium sulphoaluminate cements containing microencapsulated phase change materials
Sanfelix, Susana G.; Zea-García, Jesús D.; Londono-Zuluaga, Diana; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles; [et al.] (2020-03-24)Microencapsulated phase change materials (MPCM) incorporated in buildings walls can reduce indoor temperature fluctuations, conserving energy and enhancing thermal comfort. MPCM were incorporated in calcium sulphoaluminate ... -
Processing and characterisation of standard and doped alite-belite-ye'elimite ecocement pastes and mortars
Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel (2020-02-26)Here, we report the processing optimisation of two laboratory-prepared alite-belite-ye'elimite ecocements (standard and doped) that release to the atmosphere ~13% less CO2 than Portland Cement during fabrication. The ... -
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 ... -
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 ... -
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 ...