Listar QICM - Contribuciones a congresos científicos por título
Mostrando ítems 1-20 de 216
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4D nanoimaging of Portland cement hydration.
Shirani, Shiva; Cuesta, Ana; Díaz, Ana; Trtik, Pavel; Holler, Mirko; Rack, Alexander; Lukic, Bratislav; Brun, Emmanuel; García-Aranda, Miguel Ángel
[et al.] (2024)
Portland cements are environmentally contentious, accounting for ≈8% of the anthropogenic CO2 emissions. The understanding of the cement hydration reactions (dissolution and precipitation processes) is important to contribute ... -
Accuracy in cement hydration investigations: Combined X-ray microtomography and powder diffraction analyses
Salcedo, Inés R.; Cuesta-García, Ana María; Shirani, Shiva; León-Reina, Laura; García-Aranda, Miguel Ángel (2022-06)
Cements are multi-phase materials that can be well understood using a multi-technique approach. Furthermore, the hydration of cement pastes is a very complex set of processes. In this work, we focus on the accuracy of the ... -
Activation of LC3 binders by C-S-H nucleation seeding with a new tailored admixture for low-carbon cements.
Cuesta-García, Ana María; Morales-Cantero, Alejandro; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; Manzanec, Oliver; Dalla-Libera, Alessandro; Dhers, Sebastien; Schwesig, Peter; Borralleras, Pere; García-Aranda, Miguel Ángel[et al.] (2023)
The use of supplementary cementitious materials is currently the most favorable strategy for reducing CO2 emissions in cements. Limestone Calcined Clay Cements, LC3, are a type of cement that allows the reduction of CO2 ... -
Activation of LC3 low-carbon cements by C-S-H seeding.
Morales-Cantero, Alejandro; Gómez-de-la-Torre, María de los Ángeles; Cuesta-García, Ana María; Santacruz-Cruz, María Isabel; Mazanec, Oliver; Dalla-Libera, Alessandro; Dhers, Sebastien; Schwesig, Peter; Borralleras, Pere; García-Aranda, Miguel Ángel[et al.] (2023)
Portland-based Limestone Calcined Clay Cements (LC3) are attracting a lot of the attention from scholars and field applications due to the reduction in CO2 emissions. However, their low mechanical strengths at early ages ... -
Active layers based on vertically aligned nanostructures for SOFC applications
Zamudio-García, Javier; Chiabrera, Francesco; Losilla, Enrique R.; Marrero-López, David; Pryds, Nini; Esposito, Vincenzo[et al.] (2022-06-28)
One of the most recent strategies to enhance the electrode performance is preparing composite materials leading to an increase of the triple-phase-boundary (TPB) length. In this work, thin films VANs based on ... -
Advanced 3D nanoimaging of cement paste hydration using synchrotron Xray ptychographic tomography
Shirani, Shiva; Cuesta, Ana; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles; Diaz, Ana; Trtik, Pavel; Holler, Mirko; García-Aranda, Miguel Ángel[et al.] (2024-06-25)
Hydration of Portland cements (PC) is a complex phenomenon caused by the presence of multiple components with multi-length scale variability. To investigate this complicated process, state-of-theart 3D nanoimaging ... -
Advanced synchrotron studies of ye'elimite-based cement pastes
García-Aranda, Miguel Ángel; Cuesta-García, Ana María; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María 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 ... -
Ajuste de las propiedades estructurales de molibdatos de lantano a través de la modificación de los entramados catiónicos y aniónicos
Porras-Vázquez, José Manuel; Bergillos-Ruíz, Marta; López Vergara, Adrián; Marrero-López, David; Losilla, Enrique R. (2018-06-28)
Los materiales basados en molibdatos de lantano, con fórmula general La6-xMoO12-, son candidatos a membranas de separación de hidrógeno debido su conductividad electrónica y protónica. Estos cristalizan en diferentes ... -
Alite hydration mechanism in presence of ye’elimite related to BAY cements
Londono-Zuluaga, Diana; Tobón, Jorge Iván; García-Aranda, Miguel Ángel; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles (2019-10-08)
One alternative to decrease CO2 emissions from ordinary Portland Cement (OPC) production consists on the development of a new kind of eco-cements composed by less calcite demanding phases. That is the case of ... -
Ammonia effects on proton conductivity properties of coordination polymers
Pérez-Colodrero, Rosario Mercedes; Salcedo, Inés R.; Bazaga-García, Montse; Olivera-Pastor, Pascual; Moreno-Real, Laureano; Losilla, Enrique R.; Cabeza-Díaz, Aurelio[et al.] (2016-09-22)
Crystalline metal phosphonates are referred to as a type of structurally versatile coordination polymers [1]. Many of them contain guest molecules (H2O, heterocyclics, etc.), acidic sites and, furthermore, their structure ... -
ANALYSIS OF BUILDING MATERIALS BY SYNCHROTRON X-RAY IMAGING
Shirani, Shiva; Cuesta-García, Ana María; Morales-Cantero, Alejandro; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; García-Aranda, Miguel Ángel[et al.] (-, 2021-01)
Building materials have complex hierarchical microstructures. The largest components are coarse aggregates with dimensions larger than a few centimetres and the smallest ones are the calcium silicate hydrate (C-S-H) gel ... -
Analysis of cementitious building materials by synchrotron x-ray imaging
(2022)Cement manufacturing especially Portland Cement, the main component for the fabrication of concretes, is the most used building and construction material which has complex hierarchical microstructures. Quantitative ... -
Aplicación de estrategias de aprendizaje para la adquisición de competencias profesionales y su evaluación mediante una rúbrica integradora en diversos títulos de grado de la Universidad de Málaga
Santacruz-Cruz, María Isabel; Díaz-Ramos, Antonio; López-Guerrero, María del Mar; Aranda-Garrido, María Lourdes; Martín-Valero, Rocío; Ruiz-Párraga, Gema Teresa; Jiménez-Lara, Antonio Jesús; Gutiérrez-Pérez, Antonia[et al.] (2015-07-28)
El Espacio Europeo de Educación Superior ha supuesto importantes cambios en el proceso de enseñanza-aprendizaje para la adquisición de competencias transversales y específicas. La calidad es un factor estratégico, por lo ... -
Applications of N,N-bis(phosphonomethyl)glycine-derived Sn4+ or Co2+ phosphonates as proton conductors or energy-conversion electrocatalysts.
Cañamero-Cebrián, Fernando; Pérez-Colodrero, Rosario Mercedes; Vílchez-Cózar, Álvaro; Bazaga-García, Montse; Ramírez-Losilla, Enrique; Olivera-Pastor, Pascual; Cabeza-Díaz, Aurelio[et al.] (2023)
Metal phosphonates (MPs), a subclass of coordination polymers, may exhibit acidic groups such as POH, SO3H, COOH, N+-H, etc. Combining these features with electrocatalytically active transition metals, make them highly ... -
Applications of synchrotron x-ray powder diffraction in hydrated cements: high-resolution and high-pressure studies
Cuesta-García, Ana María; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; Popescu, Catalin; García-Aranda, Miguel Ángel (2016-07-12)
The main aim of this study is to apply synchrotron radiation techniques for the study of hydrated cement pastes. In particular, the tetracalcium aluminoferrite phase, C4AF in cement nomenclature, is the major iron-containing ... -
Asociación talco-fengita en esquistos blancos de la Zona Interna del Rif, Norte de Marruecos
Rodríguez-Ruiz, María Dolores; Abad Martínez, Maria Isabel; Bentabol-Manzanares, María José; Sanz de Galdeano, Carlos (Sociedad Española de Mineralogía, 2019)
La asociación talco-fengita como indicador de condiciones metamórficas de HP se conoce desde la publicación de Abraham y Schreyer (1976). Los estudios experimentales y teóricos han demostrado que esta asociación es estable ... -
Au-Cu/SBA(Ti) based catalysts for photocatalytic applications
Barroso-Martín, Isabel; Infantes-Molina, Antonia; Moretti, E.; Talon, Aldo; Storaro, L.; Rodríguez-Aguado, Elena; Rodríguez-Castellón, Enrique[et al.] (2018-06)
In this work, it has been synthesized several Au and Au-Cu alloy photocatalysts supported on two different mesoporous supports: a non-commercial SBA-15 and a post-synthesis TiO2 modified SBA-15 (TiSBA-15), with which a ... -
Behavior of Belite cement blended with Calcium sulfoaluminate cement: an Ecocement
Belite Portland Cements (BPC) and calcium sulfoaluminate cements (CSA) are considered as environmentally friendly cements due to their lower CO2 emissions. These ecocements (BPC and CSA) emit about 0.03 and 0.18 less tons ... -
Belite calcium sulfoaluminate cement early hydration: citric acid sensitivity.
Koufany, Imane; Santacruz-Cruz, María Isabel; Bescher, Eric P.; García-Aranda, Miguel Ángel; Gómez-de-la-Torre, María de los Ángeles (2023)
Three buckets, corresponding to three selected samples, of the same type of belite calcium sulfoaluminate (BCSA) cements have been studied. These cements show very similar elemental and mineralogical compositions, and ... -
Caracterización de tobelita obtenida mediante síntesis hidrotermal de caolinita a 200ºC
Bentabol-Manzanares, María José; Ruiz-Cruz, María Dolores (2014-01-20)
El objetivo de este trabajo es la caracterización mediante difracción de rayos X (DRX), espectroscopía infrarroja (FTIR), espectroscopía Raman, y microscopía electrónica de transmisión (HRTEM-AEM) de tobelita formada a ...