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Effect of manufacturing methods on the decay of ceramic materials: A case study of bricks in modern architecture of Madrid (Spain)

AuthorsPérez-Monserrat, Elena M. ; Agua Martínez, Fernando ; Fort González, Rafael ; Álvarez de Buergo, Mónica ; Conde Moreno, Juan Félix ; García Heras, Manuel
Built heritage
Non-destructive techniques (NDT)
Issue Date18-Sep-2016
CitationApplied Clay Science, 135: 136–149 (2017)
AbstractThe 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.
Publisher version (URL)http://dx.doi.org/10.1016/j.clay.2016.09.015
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(IGEO) Artículos
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