Person: Fernández Barrenechea, José María
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First Name
José María
Last Name
Fernández Barrenechea
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Department
Mineralogía y Petrología
Area
Cristalografía y Mineralogía
Identifiers
4 results
Search Results
Now showing 1 - 4 of 4
Item Minerales utilizados en agricultura(Seminarios de la Sociedad Española de Mineralogía, 2005) Rodas González, Magdalena; Fernández Barrenechea, José MaríaItem Mineralogy and Microstructure of Lightweight Aggregates Produced from Washing Aggregate Sludge and Fly Ash(Macla, 2010) González-Corrochano, Beatriz; Alonso Azcárate, Jacinto; Rodas, Magdalena; Luque del Villar, Francisco Javier; Fernández Barrenechea, José MaríaItem Microstructure and mineralogy of lightweight aggregates produced from washing aggregate sludge, fly ash and used motor oil(Cement & concrete composites, 2010) González Corrochano, B.; Alonso Azcárate, Jacinto; Rodas, Magdalena; Luque del Villar, Francisco Javier; Fernández Barrenechea, José MaríaThe microstructures and mineralogical compositions of lightweight aggregates (LWAs) manufactured with washing aggregate sludge (WS), fly ash (FA) and used motor oil (UMO) have been studied. Most LWAs with WS and FA exhibited an external layer and a glassy core with isolated pores. LWAs with WS and UMO did not present external shells or signs of bloating. Iron oxides, within the external layer, and pyrrhotite, in the inner glass, were observed. The mineralogical analyses revealed the neo-formation of plagioclase and pyroxene, along with minor gehlenite. Some relationships could be established: (i) the presence of larger pores is related to a decrease in the dry particle density values, (ii) when the LWA lacks the external layer, the water absorption values were dependent on the size and amount of each type of pore (open or closed), and (iii) the neo-formation of Ca-plagioclase and the consumption of quartz improved the compressive strength values.Item Mineralogía del tránsito Pérmico-Triásico en sedimentos continentales del SE de la cordillera Ibérica: implicaciones paleoambientales(Macla, 2004) Fernández Barrenechea, José María; Rodas González, Magdalena; Benito Moreno, María Isabel; López Fraguas, Francisco Javier; Alonso Azcárate, J.; Arche Miralles, Alfredo; Horra Del Barco, Raúl De La