Le mura della Fortezza di Wanquan in Cina: il percorso della conoscenza e tecniche diagnostiche avanzate per il restauro di un presidio della Grande Muraglia

The study of a walled city in China – the Wanquan Fortress – and its curtain walls by a group of Italian professors and technicians, assisted by Chinese teachers, is the result of an international scientific collaboration already started some years ago with studies and missions in the field in the Forbidden City as in other Chinese historical sites. The process of knowledge was conducted on the basis of historical research conducted at the Beijing University of Civil Engineering and Arcitecture. 3D surveys, georadar and geoelectric surveys, visual diagnostic investigations related to the deterioration and disruption of parts and sections of the walls of Wanquan, the guidelines for the restoration of theartifacts.