Diagnostic and conservation

Monitoring Michelangelo’s “Pietà Rondanini”

The diagnostic and monitoring activity of the sculpted surfaces of the Pietà was performed during the last conservation intervention. The long term periodic monitoring of the marble has been carried out since then, in order to evaluate any possible chromatic alteration, as well as the influence of the particle deposition according to the different finishing of the substrate.

Contact person: Lucia Toniolo

  • M. T. Fiorio, L. Toniolo (a cura di), “La Pietà Rondanini: Il Michelangelo di Milano. Conoscenza e Conservazione”. Quaderni del Castello Sforzesco n. 6, Comune di Milano, 2006
Mi fuma il cervello, self-portrait by di Alighiero Boetti

This bronze statue by Alighiero Boetti represent a very peculiar case study because, when it is exposed to the public, it is subjected to unusual critical conditions. The high temperature and the continuous formation of scale deposits make protection quite difficult and require frequent cleaning intervention. Accordingly, a methodology for protection based on sacrificial protective coatings was proposed and tested. The sacrificial coating is aimed at facilitating the scale deposit removal and protecting sculpted details during cleaning operations. The research was carried out in collaboration with the restoration laboratory of the Fonderia Artistica Battaglia. (http://www.fonderiabattaglia.com)

Contact person: Sara Goidanich

  • D. Gulotta, B. Mariani, E. Guerrini, S. Trasatti, P. Letardi, L. Rosetti, L. Toniolo, S. Goidanich, “Mi Fuma il Cervello” self-portrait series of Alighiero Boetti: evaluation of a conservation and maintenance strategy based on sacrifcial coatings. Heritage Science, 2017, 5(19), 1-13.
Diagnostic for the conservation of bronze statues of the “Cimitero Monumentale”

The research team supports the restorers along all the restoration steps of a series of bronze statues of the “Cimitero Monumentale” of Milan, including: pre-operative diagnosis with non-invasive methods and micro-destructive evaluation of cleaning methods and protection, post-restoration monitoring. The project began in the summer of 2014.

Contact person: Sara Goidanich

Agar gel applications for the sustainable cleaning of stone surfaces

Cleaning is a fundamental phase of the conservation and maintenance activity of the cultural heritage. It is required to be highly effective in the removal of undesired deposits, controllable, and completely respectful of the substrate. According to these principles, a sustainable approach for the cleaning of indoor surfaces of the Duomo di Milano by means of agar gel applications has been set-up and tested. The methodology proved to be effective in removing soluble salts and soot particles, as well as very respectful of the valuable sculpted surfaces. (Project concluded in 2015)

Contact person: Davide Gulotta

  • D. Gulotta, D. Saviello, F. Gherardi, L. Toniolo, M. Anzani, A. Rabbolini, S. Goidanich. (2014). Setup of a sustainable indoor cleaning methodology for the sculpted stone surfaces of the Duomo of Milan. Heritage Science 2(6), pp. 1-13. http://www.heritagesciencejournal.com/content/2/1/6
Monitoring and conservation of Ghiberti’s Porta del Paradiso

The project and was initially related to the selection of the optimal solution for the exposition to the public of the Porta del Paradiso. By means of galvanic sensors, which simulate the actual artefact in terms of composition and stratigraphy, it was possible to evaluate that a showcase with low and controlled relative humidity could assure the same level of protection of a showcase saturated with nitrogen. Galvanic sensors have been also used to monitor the corrosion rate of the Porta del Paradiso inside it showcase for three years. (Project concluded in 2014)

Contact person: Sara Goidanich

  • S. Goidanich et al., Corrosion Evaluation of Ghiberti’s “Porta Del Paradiso” in Three Display Environments, in Proceedings of Metal 2010, International Conference on Metal Conservation, Interim meeting of the international council of museums committee for conservation metal working group, October 11-15, Charleston, South Carolina, USA, 151-159, 2010, ISBN 978-0-9830399-0-7
  • Andrea Cagnini, Simone Porcinai, Roberto Boddi, Laura Brambilla, Sara Goidanich, Alessandra Bonazza, Monitoraggio all’interno della vetrina, in Il Paradiso ritrovato – Il restauro della Porta del Ghiberti, p. 341-345, a cura di Annamaria Giusti, ed. Mandragora s.r.l., 2015, ISBN 978-88-7461-247-5
  • https://sites.google.com/site/bronzidoratiprin2009/