Pérez-Monserrat, Elena MercedesAgua Martínez, FernandoFort González, RafaelÁlvarez de Buergo, MónicaConde Moreno, Juan FélixGarcía Heras, Manuel2023-06-172023-06-1720170169-131710.1016/j.clay.2016.09.015https://hdl.handle.net/20.500.14352/18594The appearance and main decay forms in the fair-faced brick façades on the University Campus of Madrid's Faculty of Medicine were taken as a starting point to analyse certain building's construction characteristics and the clay and technology used in brick manufacture. The raw materials consisted in a mix of Miocene marl and red Triassic clays from the Spanish province of Jaén. The exposed face of bricks was characterised by a yellowish tone and smooth, uniform texture that afforded perfect dimensioning and inter-brick alignment. In some bricks this texture was lost, with a concomitant colour change, surface roughness increase and loss of material. Laboratory studies through polarised optical microscope (POM), X-ray diffraction (XRD) and field emission scanning electron microscopy with energy dispersive X-ray spectroscopy (FESEM-EDS) revealed similar composition in all the bricks, firing temperatures ranging between 800 and 850 °C and, with the exception of the exposed surface, not particularly careful manufacture.engAtribución-NoComercial-SinDerivadas 3.0 Españajournal articlehttps://www.journals.elsevier.com/applied-clay-science/open access552.08ClaysBricksBuilt heritageDecayNon-destructivetechniques (NDT)Petrología