Anti-tipping reinforced plaster
Cremona, Italy
The seismic strengthening intervention on the “Gli Astronauti” complex in Rivarolo del Re, in the province of Cremona, was aimed at improving the structural safety of the external infill walls and protecting the reinforced concrete load-bearing elements, while preserving the existing plaster wherever possible. The intervention was designed to prevent façade overturning during seismic events, reducing risks for occupants and ensuring the long-term durability of the building.
The project involved careful substrate preparation, the installation of reinforcements integrated into the existing structures, and the application of mortar layers designed to enhance structural consolidation. Through this approach, it was possible to combine safety, efficiency, and sustainability, while also ensuring a stable base for potential future thermal insulation works and maintaining the aesthetic characteristics of the façade.
Phases of the intervention
The works were carried out following a logical sequence to ensure the maximum effectiveness of the anti-overturning system:
1. Substrate preparation and inspection
The intervention began with the removal of paint and surface finishes, followed by an inspection of the substrate conditions and any necessary preparatory works to ensure a stable base.
2. Drilling of pilot holes in structural elements
Pilot holes were made in the main reinforced concrete elements, required for the installation of reinforcements that connect the infill walls to the structural frame.
3. Pilot holes in the infill walls
Additional pre-drillings were carried out on the infill wall surfaces according to the design specifications, ensuring a secure and uniform anchoring of the reinforcement system.
4. Preliminary consolidation of the substrate
The surfaces were treated with a high-penetration primer, designed to stabilise the most powdery or degraded areas and to ensure uniform absorption across the substrate.
5. Application of the first mortar layer and installation of the reinforcing mesh
The first mortar layer was applied to embed the reinforcing mesh, which was then positioned immediately afterwards, ensuring proper anchoring and continuity across the façade surfaces.
6. Installation of connectors
Connectors were then installed on the perimeter areas of the infill walls, linking them to the structural elements, followed by additional connectors on the wall surface to secure the mesh and ensure system stability.
7. Application of the second mortar layer and completion
Finally, a second mortar layer was applied to fully cover the reinforcement system, with a sufficient thickness to protect the consolidation and provide a surface ready for future aesthetic finishing or thermal insulation works.
Works carried out by FES
Seismic strengthening includes targeted interventions designed to increase a building’s resistance to seismic actions, protecting both people and the built environment through certified and long-lasting structural reinforcement techniques.
Results
The intervention significantly improved the structural safety of the complex, preventing the risk of infill wall overturning during seismic events while preserving the architectural characteristics of the façade. The durability and stability of the building were enhanced, resulting in an overall increase in safety for its occupants.