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Current Trends in Civil & Structural Engineering

Historic Masonry Walls Strengthened with GFRP Strips Under Compression and Shear

A large portion of the European cultural heritage is made of masonry buildings that have a growing economic and social value in many countries. Therefore, their preservation is considered an important issue in modern societies both for their historical interest and for the economic contribution in contexts where tourism has become a major industry. During past and recent earthquakes these historic buildings have demonstrated to be particularly prone to damage, showing partial or total collapse. In many cases, this was due to restorations non-respectful of the original structural layout. In particular, after last earthquakes of 2016 and 2017 that invested a large area of Appennini mountains in the centre of Italy where many historic towns are located, a duty that regards mostly structural engineers is the preservation of cultural architectural heritage. In recent years there has been increasing interest in loadbearing walls, in particular, the knowledge how historic masonry walls behaves under seismic action is fundamental for preserving the building patrimony. In an actual masonry structure, during seismic action, the presence of shear stress both in the brick and mortar will give rise to diagonal tension and compression in the masonry as a whole.
 
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