Listar por autor "Zea-Garcia, Jesus D."
Mostrando ítems 1-20 de 24
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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 ... -
Clinkering and hydration study of non-active and active Belite-Alite-Ye'elimite (BAY) cements
Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel (2017-10-17)
The manufacturing process of ye'elimite rich cements emit about 15-37% less CO2 to the atmosphere than OPC. Cements that contain belite, ye’elimite and ferrite, known as BYF cements, are promising eco-friendly binders. ... -
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-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; García-Maté, Marta; Álvarez-Pinazo, Gema[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
(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 ... -
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 ... -
Dispersion and optimization of a calcium sulfoaluminate mortar prepared with superplasticizer
Canto-González, David; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel (2016-06-29)
Calcium sulfoaluminate (CSA) cements/mortars are receiving increasing attention since their manufacture produces less CO2 than ordinary Portland cement (OPC) (up to 22% of decrease depending on its composition). These ... -
Early hydration study of standard and doped Alite-Belite-Ye’elimite (ABY) cements through Synchrotron Radiation
Zea-Garcia, Jesus D.; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Vallcorba, O.; Santacruz-Cruz, Maria Isabel[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 ... -
High pressure and temperature spinning capillary cell for in-situ synchrotron X-ray powder diffraction
Fraga, Edmundo; Yáñez, Armando; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Cuesta-Garcia, Ana Maria; Valcárcel-Fernández, Ricardo; Farré-París, Francesc; Malfois, Marc; Aranda, Miguel A.G.[et al.] (2019)
In situ research of materials under moderate pressures (hundreds of bar) is essential in many scientific fields. These range from gas sorption to chemical and biological processes. One industrially important discipline is ... -
Hydration development and thermal performance of calcium sulphoaluminate cements containing microencapsulated phase change materials
Sanfelix, Susana G.; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles; Kjøniksen, Anna-Lena[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 ... -
Local structure and Ca/Si ratio in C-S-H gels from hydration of blends of tricalcium silicate and silica fume
Dapiaggi, Monica; Santacruz-Cruz, Maria Isabel; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Zea-Garcia, Jesus D.; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2021-03)
At the microscale, C-S-H gels from alite, or neat Portland cements, has a Ca/Si ratio close to 1.80. At the nanoscale, C-S-H is described by a defective tobermorite structure which allows a maximum Ca/Si ratio close to ... -
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 ... -
Nanocrystalline cathodes for PC-SOFCs based on BCZY
Dos Santos-Gómez, Lucía; Zea-Garcia, Jesus D.; Porras-Vazquez, Jose Manuel; Marrero-López, David; Ramirez-Losilla, Enrique (2016-09-27)
Perovskites based on BaCeO3-δ exhibit the highest proton conductivity among this class of materials, however, they are susceptible to hydration and carbonation in presence of water vapor and CO2 [1]. In contrast, the ... -
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 ... -
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 Analysis of Oil Well Cement: in Situ Hydration Study at 150 Bars and 150 °C
Fraga, Edmundo; Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Yañez-Casal, Armando; García-Aranda, Miguel Ángel[et al.] (MDPI - Publisher of Open Access Journals, 2019-06)
Oil and gas well cements are multimineral materials that hydrate under high pressure and temperature. Their overall reactivity at early ages is studied by a number of techniques including through the use of the consistometer. ... -
Synchrotron Pair Distribution Function analyses of Ye’elimite-based pastes
Cuesta-Garcia, Ana Maria; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles; 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 pair distribution function approach applied to cement samples
Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel (2019-10-14)
The characterization of the nanocrystalline/amorphous materials is very challenging but the presence of these materials mixed with large amounts of crystalline phases makes the analysis even more complicated. This is the ... -
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 ... -
Synchrotron X-ray pair distribution function analysis of tricalcium silicate pastes
Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (2019-09-24)
The analysis of nanocrystalline and amorphous components within cement pastes that contain high amounts of crystalline phases is very challenging. Synchrotron powder diffraction jointly with the pair distribution function ... -
Synchrotron x-ray pair distribution function: A tool to characterize cement gels
Cuesta-Garcia, Ana Maria; Zea-Garcia, Jesus D.; Londono-Zuluaga, Diana; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel[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 ...