NDT for Mechanical Characterization of Masonry in Italian Archeological Architectures

The contribution regards the topic of diagnostic investigative procedures and protocols, specifically non-destructive or micro-invasive, (thermography, sonic and ultrasonic tests, endoscopy, etc..) for characterization and evaluation of mechanical behavior and conservative conditions of three masonry structures in three Italian archaeological sites of Roman times, placed in hard seismic area: 1. the case of the Great Theatre-Pompeii (II century BC) built in “caementicium opus” and affected by non-structural conservation problems related to high touristic presence; 2. the House of Mosaic Hall-Herculaneum (I century BC.) realized in “opus reticulatum”, with significant problems to foundational instability; 3. finally the Temple-Pozzuoli (III century BC) in “isodomum opus”, whose structural pertains a relevant mutilation realized during different historical phases of functional adaptation from ancient temple to catholic church. The study proposes a qualitative and quantitative comparison between original portions, generally built with excellent techniques and portions of reconstruction or anastylosis, where usually stone or clay materials are recovered, but the constructive characteristics are different and mortars are in large part of cement. In this way it is possible to estimate an interesting qualitative distinction of these ancient and non-ancient masonry, specifically in terms of technical and constructive characteristics.

References
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