Listar por autor "León-Reina, Laura"
Mostrando ítems 21-40 de 44
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Mix and measure II: joint high-energy laboratory powder diffraction and microtomography for cement hydration studies
Fernández-Sánchez, Jaime; Cuesta, Ana; Shirani, Shiva; Redondo-Soto, Cinthya; Torre, Ángeles G. de la; Santacruz-Cruz, María Isabel
; Salcedo, Inés R.; León-Reina, Laura; García-Aranda, Miguel Ángel[et al.] (Wiley, 2024)
Portland cements (PCs) and cement blends are multiphase materials of different fineness, and quantitatively analysing their hydration pathways is very chal- lenging. The dissolution (hydration) of the initial crystalline ... -
Multifunctional lanthanum tetraphosphonates: Flexible, ultramicroporous and proton-conducting hybrid frameworks
Pérez-Colodrero, Rosario Mercedes; Olivera-Pastor, Pascual; Losilla, Enrique R.; García-Aranda, Miguel Ángel; León-Reina, Laura; Papadaki, M.; McKinlay, Alistair C.; Morris, Russell E.; Demadis, Konstantinos D.; Cabeza-Díaz, Aurelio[et al.] (The Royal Society of Chemistry, 2012)
A new flexible ultramicroporous solid, La(H5DTMP)·7H2O (1), has been crystallized at room temperature using the tetraphosphonic acid H8DTMP, hexamethylenediamine-N,N,N′,N′-tetrakis(methylenephosphonic acid). Its crystal ... -
Multifunctional Luminescent and Proton-Conducting Lanthanide Carboxyphosphonate Open-Framework Hybrids Exhibiting Crystalline-to-Amorphous-to-Crystalline Transformations
Pérez-Colodrero, Rosario Mercedes; Papathanasiou, Konstantinos E.; Stavgianoudaki, Nikoleta; Olivera-Pastor, Pascual; Losilla, Enrique R.; García-Aranda, Miguel Ángel; León-Reina, Laura; Sanz, Jesús; Sobrados, Isabel; Choquesillo-Lazarte, Duane; García-Ruíz, Juan M.; Atienzar, Pedro; Rey, Fernando; Demadis, Konstantinos D.; Cabeza-Díaz, Aurelio[et al.] (American Chemical Society, 2012-09-15)
The chemistry of metal phosphonates has been progressing fast with the addition of new materials that possess novel structural features and new properties, occasionally in a cooperative manner. In this paper, we report a ... -
Multimodal study of unaltered cement hydrating pastes: combined high-energy laboratory powder diffraction and microtomography.
Fernández-Sánchez, Jaime; Cuesta, Ana; Shirani, Shiva; Koufany, Imane; Gómez-de-la-Torre, María de los Ángeles; Santacruz-Cruz, María Isabel; Salcedo, Inés R.; León-Reina, Laura; García-Aranda, Miguel Ángel[et al.] (2024)
Background: The study of the hydration pathways of Portland cement (PC) and cement blends presents significant challenges due to their multiphase nature and varying fineness. Quantifying the dissolution of initial crystalline ... -
Natural radiactivity from building materials in Spain
Pérez-Martínez, Manuel; Dueñas-Buey, Mª Concepción; Gordo Puertas, Elisa; Fernández Jiménez, Mª del Carmen; Cañete-Hidalgo, Sergio Andrés; Cabello Ganuza, María; Ruiz-Cruces, Rafael; Liger-Pérez, Esperanza; León-Reina, Laura[et al.] (2015-06-15)
The industrial construction sector is very important in Spain. Building materials used in this industry are sources of radiation from natural radionuclides they contain. The European Commission published some recommendations ... -
La odisea de medir PDF con un difractómetro “convencional”
En esta ponencia se presenta la puesta a punto del difractómetro D8 Advance (Bruker S.L.) para la adquisición de datos de laboratorio de PDF (Pair Distribution Function) junto con los resultados obtenidos. -
Physical and chemical characterization of building materials
Pérez-Martínez, Manuel; Dueñas-Buey, Mª Concepción; Gordo Puertas, Elisa; León-Reina, Laura; Liger-Pérez, Esperanza; González Montero, Rocío; Cabello Ganuza, María; Ruiz-Cruces, Rafael; Cañete-Hidalgo, Sergio Andrés[et al.] (2017-06-12)
The products used in the construction of buildings and infrastructures, are made from raw material extracted directly from nature, and after suitable transformation processes are placed on site. Approximately 2.5 tons ... -
Plio-Pleistocene hydrothermal events of the Baza Basin (Betic Cordillera, SE Spain) and their paleoecological implications
García-Aguilar, José Manuel; Campaña, Isidoro; Martínez-Navarro, Bienvenido; Guerra-Merchán, Antonio; Rodríguez-Ruiz, María Dolores; Rodríguez-Gómez, Guillermo; Granados, Alejandro; León-Reina, Laura; Espigares-Ortiz, María Patrocinio; Ros-Montoya, Sergio; Palmqvist-Barrena, Carlos Paul[et al.] (Springer, 2024-09-03)
Los rellenos continentales sedimentarios de edad Plioceno inferior a finales del Pleistoceno medio en la cuenca de Baza (depresión de Guadix-Baza, SE de España) son mundialmente conocidos por su elevado grado de completitud ... -
Proton conductivity of multifunctional metal phosphonate frameworks
Cabeza-Díaz, Aurelio; Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Papadaki, M.; Olivera-Pastor, Pascual; Losilla, Enrique R.; León-Reina, Laura; Moreno-Real, Laureano; García-Aranda, Miguel Ángel; Demadis, Konstantinos D.[et al.] (2015-03-23)
Metal phosphonates exhibit attractive characteristics for proton conductivity, such as tunable functionality, chemical and thermal stability and the existence of H-bond networks with acidic protons within their structure.1 In ... -
Proton Conductors based on Metal Phosphonate Hybrid Materials for PEM Fuel Cells
Cabeza-Díaz, Aurelio; Pérez-Colodrero, Rosario Mercedes; Bazaga-García, Montse; Hernández Alonso, Daniel; Compaña Prieto, José Manuel; Olivera-Pastor, Pascual; Losilla, Enrique R.; García-Aranda, Miguel Ángel; León-Reina, Laura[et al.] (2014-06-25)
The necessity of energy and power generation is constantly growing. Fossils fuels are quickly becoming unsatisfactory substrates due to both their emission of pollutants and their finite expectancy. Fuel cells are one of ... -
Quantitative phase Analisis: A comparative study of Mo and Cu strictly monochromatic radiations
Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; Cuesta-García, Ana María; García-Maté, Marta; Álvarez-Pinazo, Gema; Santacruz-Cruz, María 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 ... -
Rheological and hydration characterization of calcium sulfoaluminate cement pastes
García-Maté, Marta; Santacruz-Cruz, María Isabel; Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; García-Aranda, Miguel Ángel (2015-05-14)
Calcium sulfoaluminate (CSA) cements are currently receiving a lot of attention because their manufacture produces less CO2 than ordinary Portland cement (OPC). However, it is essential to understand all parameters which ... -
Rietveld quantitative phase analyses of SRM 2686a: a standard Portland clinker
García-Maté, Marta; Álvarez-Pinazo, Gema; León-Reina, Laura; Gómez-de-la-Torre, María de los Ángeles (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 ... -
Rietveld Quantitative Phase Analysis of OPC Clinkers, Cements and Hydration Products
García-Aranda, Miguel Ángel; Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura (Mineralogical Society of America, 2012)
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Rietveld quantitative phase analysis of yeelimite-containing cements
Álvarez-Pinazo, Gema; Cuesta-García, Ana María; García-Maté, Marta; Santacruz-Cruz, María Isabel; Ramírez-Losilla, Enrique; Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; García-Aranda, Miguel Ángel[et al.] (Karen Scrivener, 2012)
Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate, CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium sulfoaluminate, ... -
Rietveld quantitative phase analysis of Yeelimite-containing cements
Álvarez-Pinazo, Gema; Cuesta-García, Ana María; García-Maté, Marta; Santacruz-Cruz, María Isabel; Ramírez-Losilla, Enrique; Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2012-03-26)
Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate, CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium sulfoaluminate, ... -
Rietveld quantitative phase analysis with molybdenum radiation
Cuesta-García, Ana María; Álvarez-Pinazo, Gema; García-Maté, Marta; Santacruz-Cruz, María Isabel; García-Aranda, Miguel Ángel; Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura[et al.] (Cambridge Core, 2014)
Building materials are very complex samples of worldwide importance; hence quantitative knowledge of their mineralogical composition is necessary to predict performances. Rietveld quantitative phase analysis (RQPA) allows ... -
The use of mo and cu monochromatic radiations for quantitative phase analysis: study of the accuracy
Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; Cuesta-García, Ana María; García-Maté, Marta; Álvarez-Pinazo, Gema; Santacruz-Cruz, María 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 ... -
Time-dependent monitoring of cement hydration by combined laboratory x-ray microtomography and powder diffraction
Redondo-Soto, Cinthya; Cuesta-García, Ana María; Salcedo, Inés R.; León-Reina, Laura; García-Aranda, Miguel Ángel (2022-06-30)
Following the reaction degree of amorphous phases in cements is very challenging. It becomes even harder when some additions (supplementary cementitious materials) are employed. Nowadays, calcined clays are attracting a ... -
Tuning Proton Conductivity in A Multifunctional Calcium Phosphonate Hybrid Framework
Cabeza-Díaz, Aurelio; Bazaga-García, Montse; Pérez-Colodrero, Rosario Mercedes; Papadaki, M.; Olivera-Pastor, Pascual; Losilla, Enrique R.; León-Reina, Laura; Choquesillo-Lazarte, Duane; Garczarek, Piotr; Zon, Jerzy; García-Aranda, Miguel Ángel; Demadis, Konstantinos D.[et al.] (2014-06-25)
Multi-chelating phosphonate ligands are organic linkers alternative to polycarboxylates and other ligands providing synthetic access to a number of thermally- and chemically-stable MOFs [1]. Metal phosphonates are amenable ...