Ricerc@Sapienza

In this paper, surface and borehole geophysical surveys are employed to improve the effectiveness of a rehabilitation intervention (cut-off wall) to be executed on the right abutment of a leaking concrete dam (Penne, Central Italy). In a first step, surface geophysical measurements (electrical resistivity and P-wave velocity data), were collected to provide a geophysical model to be compared to the preliminary geological model available before the geophysical survey.

The reconstruction of the current status of a historic building is essential for seismic safety assessment and for designing the retrofitting interventions since different safety and confidence factors have to be assumed, depending on the level of information about the subsoil structure. In this work, we present an investigation of the shallow subsurface below and around a historic building affected by differential settlements in order to define its geometry and to characterise its stiffness at low strain.

In this paper, we present an integrated approach, for assessing the condition of an ancient Roman building, affected by rising damp and cracking phenomena. The combination of high-resolution geophysical methods, such as seismic and electrical tomography, with biological information, allowed a more detailed evaluation of the state of conservation of the masonry building. A preliminary three-dimensional electrical survey was conducted to detect the existing building foundations and to determine the variation of the resistivity in the ground.