Laser technology for conservation of Roman archaeological marble epigraphs from Sisapo (La Bienvenida, Almodóvar del Campo, Ciudad Real)
Keywords:
Hispano-Roman, epigraph, marble, laser, conservation, cleaninig, XRDAbstract
This work presents the results of the research process and restoration intervention by laser technique, undertaken at SECYR, on a group of Roman epigraphs on marble of different compositions, excavated in the Roman municipium of Sisapo (La Bienvenida, Almodóvar del Campo, Ciudad Real). The deterioration problems of the archaeological marbles buried in the ground for centuries are characterized by dense clumps of carbonates, silicates, phosphates and dirt, which become crusts of great hardness. Their compositional study was carried out by Polycrystalline X-ray Diffraction (RXD-P). The characteristics of this alteration film made it impossible to remove by means of the usual chemical and mechanical treatments without leaving visible marks or scratches, and without affecting the original patina. However, the application of laser as a cleaning method has allowed us to obtain very positive results; unveiling the ancient graphs, and keeping the original patina of the epigraphs.
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References
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