The colour of architecture: physical-chemical analysis of polychromy on stone in a 16th century gothic Portal at the Cathedral of Santo Domingo
Fecha
2020Autor
Prieto Vicioso, Esteban
Flores Sasso, Virginia
Ruiz Valero, Letzai
García de Miguel, José M.
Metadatos
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Colour always played a role in the human evolutionary process and has been used as
a way of expression. But the time, the lack of maintenance and abandonment, the lack of
studies related to the presence of polychromy in architecture and the nineteenth-century idea of
eliminating building plasters to expose stone and brick have caused many to ignore and
forgotten the presence of colour in historical buildings. In most cases disappear leaving only
traces of colours. For this reason the aim of this research is study the polychromy on stone of a
16th century gothic Portal in the Cathedral of Santo Domingo. Analyses were performed using
non-destructive techniques as Transmission Polarized Light Microscopy (PLM), Fourier-
Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy / Energy Dispersive
Elemental Analysis X-Ray (SEM/EDX), Gas Chromatography (GC) and X-Ray Diffraction
(XRD). To determinate the colour was used a CIELAB System and Munsell Colour System. In
conclusion patinas yellow, ochre, red, green and blue colours; and pigmented successive layers
of plaster and lime was found. Remains of these layers of polychromies are also spread
throughout many areas of the Cathedral.
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