CRM intervention improves the load-bearing capacity and ductility of vertical masonry elements (piers and spandrel beams), enhancing their performance under shear forces as well as in-plane and out-of-plane bending–compression, with only a limited increase in stiffness.
The strengthening intervention can also be applied on a single face of the masonry. The corrosion-free nature of the reinforcement elements ensures high durability and long-term effectiveness of the system, while allowing the use of thin layers of structural mortar, thereby limiting any increase in structural mass.
The system is reversible and is therefore also suitable for interventions on historic masonry.

• Calculation software
• Go to DWG files

The strengthening intervention using a CRM system on masonry arches and vaults consists of applying a thin overlay of low-modulus mortar—preferably lime-based—reinforced with a preformed FRP mesh.
The goal is to compensate for the lack of tensile strength in the masonry by counteracting the formation of hinges. Additionally, the added thickness of the strengthening mortar increases the cross-section, allowing for greater variation in the thrust line and improving the overall stability of the arch or vault.
The CRM system enables a uniform and distributed increase in the vault’s capacity to withstand gravitational loads and enhances its response under seismic actions.
This technique can be applied on the intrados (inner surface), the extrados (outer surface), or on both sides. In all cases, the system must be effectively connected to the surrounding masonry.

• Go to DWG files

The strengthening intervention on existing floors consists of creating a thin composite slab made of structural mortar, reinforced with preformed composite meshes, and connected to both the floor system and the vertical structural elements.
The objective is to increase the floor’s capacity to distribute horizontal and vertical loads, reduce deformations, and improve the overall building performance under seismic actions.
The use of glass or carbon fiber meshes, combined with controlled-performance mortars, enables a uniform distribution of stresses within the plane of the slab and effective stiffening of the floor system, with only a limited increase in thickness and self-weight.
The strengthening can be applied either at the intrados (underside) or extrados (topside), with the mesh connected to the slab using connectors and anchored to the perimeter masonry through composite or steel bars.

• Go to DWG files

The confinement intervention for existing vertical elements consists of applying a continuous reinforcement around the column or pier cross-section using CRM systems for masonry columns and structural piers, achieving a uniform and widespread structural upgrade of the element.
The objective is to increase load-bearing capacity and seismic performance by enhancing resistance to compression as well as bending and shear actions (compression–bending interaction and shear), while also improving ductility and energy dissipation capacity.
Confinement promotes a more uniform distribution of stresses and a more stable structural behavior, reducing vulnerability to brittle failure mechanisms.
The intervention can also be applied to concrete and reinforced concrete columns, depending on the type of structure and the required performance level.

• Go to DWG files

Reinforced masonry ring beams can be constructed by embedding GFRP or CFRP meshes, with predefined widths and grid spacing, within the horizontal mortar joints. The intervention is completed by installing vertical FRP bars that act as dowels between the ring beam and the underlying existing masonry.
Under seismic actions, the ring beam acts as a top restraint for the supporting walls, counteracting out-of-plane collapse mechanisms. Additionally, when the meshes are properly overlapped and anchored at wall intersections, it promotes a box-like structural behavior of the building.
It is essential to ensure that the existing masonry is of adequate quality; otherwise, appropriate preliminary strengthening interventions must be carried out.
This solution is applicable to both brick and stone masonry and, when executed through controlled dismantling of the upper section, allows the reuse of original materials, preserving the building’s historical and architectural character.

• Go to DWG files

The repair of bridge piers using restraining mesh involves restoring and stabilizing deteriorated portions of the structural element through the application of a preformed composite mesh, properly anchored to the substrate and embedded in repair mortars or high-performance micro-concrete.
The objective is to prevent the detachment of the concrete cover and damaged areas, improve the confinement of the reconstructed material, and restore the geometric and functional continuity of the section.
The presence of the mesh ensures a more uniform distribution of stresses within the repair layer, limiting cracking phenomena and enhancing the durability of the intervention, particularly in aggressive environments.
The corrosion-free nature of the composite reinforcement makes this system especially suitable for infrastructure exposed to water, de-icing salts, freeze–thaw cycles, and atmospheric agents, offering significant advantages in terms of maintenance and service life.

• Go to DWG files

Repair and strengthening interventions in tunnels using composite mesh consist of creating a collaborative reinforced lining applied to the intrados of the existing lining. This is carried out using preformed meshes anchored to the substrate and embedded in structural mortars or shotcrete.
The objective is to secure deteriorated areas, prevent spalling and surface detachment, and enhance the lining’s ability to distribute applied stresses.
The system improves the overall performance of the tunnel crown and walls, reducing vulnerability to cracking, localized loads, dynamic actions, and particularly demanding service conditions.
The use of composite meshes—thanks to their light weight, durability, and corrosion resistance—makes it possible to implement effective interventions even in humid or aggressive environments, while limiting thickness, added weight, and maintenance requirements.

• Go to DWG files