ANALISI, DIAGNOSI E CONSERVAZIONE DELLE MURATURE LAPIDEE DI UN BORGO ALTO-MEDIEVALE IN VAL TREBBIA

Marco Morandotti, Massimo Setti, Valentina Cinieri

Università di Pavia, via ferrata, 1,

marco.morandotti@unipv.it   massimo.setti@unipv.it   valentina.cinieri01@universitadipavia.it

ABSTRACT 

The nature of historic buildings is a plot of different writings, subject of study and research. The bearing wall constitutes the filter between inside and outside and it guides the relation to the landscape. The masonry represents mainly the image of a building and it is the most weathered element.

In a multidisciplinary process, the diagnostics is a critical investigation to define precise choices of action. Focusing on this main perspective, the study presented has been developed for a Building Engineering/Architecture thesis1.

Embresi is a high-medieval hamlet, which shows marks of an important history, despite of its actual decay. The tower and the presence of stone graven faces are really interesting. The stonework itself shows some peculiarities. The realization of corners, portals and windows and the high quality of joints demonstrates an impressive building craftsmanship, higher than a simple rural construction. 

The masonry is made of good quality material and the diseases are resulted from the degradation of the construction system especially connected with the collapse of the roofs. The limestone blocks have different composition in relation to their position and function. The investigations allowed also the comparison between the mineralogical composition of the ashlars and that one of the rock formations, placed in the vicinity. The X-ray diffraction underlined important information about composition, history and preservation.

Key-words: conservation, stonework, X-ray diffraction, High-Middle Ages