IL CHIOSTRO OTTAGONALE DI SAN MICHELE IN BOSCO A BOLOGNA. FINITURE PITTORICHE DI DIFFICILE CONSERVAZIONE

Veronica Balboni1, Fabio Bevilacqua2, Antonella Casoli3, Monica Galeotti4, Clelia Isca3, Daniela Pinna5

1 Labo.R.A. - Laboratorio di Restauro Architettonico, Dipartimento di Architettura, Università degli Studi di Ferrara.

2 C.R.C. Restauri, Bologna.

3 Dipartimento di Chimica, Università  degli Studi di Parma.

4 OPD - Opificio delle Pietre Dure, Firenze.

5 Soprintendenza per i Beni Artistici e Storici, Bologna.

ABSTRACT

Between 1604 and 1605 some artists of the Accademia Clementina painted the walls of the octagonal cloister of San Michele in  Bosco in Bologna. Ludovico Carracci and Guido Reni painted the principal scenes of the stories of San Benedetto. On this occasion, the painters and their students applied the technique of painting with oil-mixed pigments on dry plaster. Today, the serious state of conservation of these paintings  becomes  an opportunity  to  think about the proper preservation of both  the architecture and pictorial lavers that are designed in close relationship with the built space.

In these cases, operative choices must necessarily take into account the different conservation needs of architecture and paintings ,as well as the risk to cause a further damage, to them.

The contribution deals with the themes of the, techniques used to make the  paintings and of the relationship between their deterioration and the architectural layout of the site. Laboratory studies, were  carried out on micro-fragments ,of the paintings to know the binding media ,the pigments,and  the materials used for the “imprimitura”.

Key-words:  paint film, iol painting on the wall, surface degradation, architecture claustrale.