Valutazione dell'impatto esercitato sal moderno utilizzo sulla conservazione del teatro romano di Nora (Sardegna)

The Nora Theatre is a roman monument situated just a few meters by the seaside on the south-west coast of Sardinia. This monument is composed by various materials and is subjected to intensive weathering process. The opus caementicium structure appears partially pulverized and the andesite ashlars of the tiers are deeply flaked. A significantly contribution to this progressive decay is also caused by the frequent people's treading on the theatre, as the access to it is allowed in summer for shows. Correlations between the forms of weathering observed and microstructural characteristics of materials constituents the structure are discussed.