
Reinforcement of wall panels in bending and shear with CRM
The reinforced plaster technique, called CRM, is very common for reinforcing masonry piers and involves the use of a reinforcement frame made of preformed alkali-resistant glass fiber meshes, with thermosetting primer, embedded in a lime-based structural mortar. The meshes are connected through preformed “L” composite connectors in glass fiber and thermosetting resin with improved adhesion and fixed to the masonry elements through chemical anchors (epoxy resin or high-performance, rapid-hardening vinyl ester resin). Alternatively, stainless steel helical bars can be used. The thickness of CRM reinforcement systems is usually between 30 and 50 mm and the intervention allows for increases in shear resistance in the plane and in bending, without excessively modifying the rigidity of the masonry panel.
Features
- High resistance and reduced thicknesses
- Extremely flexible networks
- Corrosion assistance and resistance to alkaline environments
Operational Phases
- Preparation of the substrate
- Application of a first layer of mortar
- Installation of the network
- Preparation of the connection systems
- Application of the second layer of mortar
- Smoothing

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