Structural reinforcement with FRCM, CRM and FRP composites
As the official partner of Italy's Fibre Net (part of the Kerakoll Group), EKKAF offers the Greek market complete, certified systems for structural and seismic strengthening of masonry and reinforced concrete.
Why strengthen with composite materials
Composite materials (fibre-reinforced polymers and fibre meshes in inorganic matrices) deliver high mechanical strength with minimal added weight and thickness. Compared with conventional reinforced concrete jackets, interventions are faster and less invasive, they do not significantly alter the stiffness and mass of the structure, and — in inorganic matrix systems — they are reversible, a critical property for heritage buildings. The materials do not corrode, ensuring long-term effectiveness even in aggressive environments.
The three systems
FRCM — C-MATRIX
AR glass, carbon or basalt-steel fibre meshes in an inorganic matrix (NHL or cementitious mortar). Thin layers from 8 mm for masonry and concrete — ideal for historic buildings and damp environments.
CRM — RI-STRUTTURA / H-PLANET
Preformed GFRP/CFRP meshes with corner elements and connectors, embedded in ~3 cm structural mortar. Full-section strengthening of walls, vaults, floors and piers.
FRP — BETONTEX
Carbon fibre fabrics, laminates and bars with epoxy resins. Maximum tensile strength at negligible thickness, for flexural and shear strengthening and confinement of reinforced concrete.
Which system fits your project
| Criterion | FRCM | CRM | FRP |
|---|---|---|---|
| Substrate | Masonry & concrete | Mainly masonry | Concrete & good masonry |
| Intervention thickness | from 8 mm | about 30 mm | minimal (mm) |
| Matrix | Inorganic (NHL/cement) | Structural mortar | Epoxy resin |
| Heritage buildings | Suitable, reversible | Suitable, reversible | Case by case |
| Damp substrates | Suitable | Suitable | Requires dry substrate |
| Typical use | Wall shear/flexure, vaults | Seismic upgrade of masonry | Beam flexure/shear, confinement |
Applications in pictures
Typical applications of the Fibre Net systems on masonry, concrete and infrastructure works.
Masonry
Increased shear and flexural capacity of piers without stiffness change.
Arches & Vaults
Preventing hinge formation, at intrados or extrados.
Floors & Slabs
A thin composite slab providing diaphragm action.
Columns
Confinement for increased capacity and ductility.
Beam–Column Joints
Shear strengthening and confinement of frame joints.
Tunnels & Infrastructure
A collaborative reinforced lining at the tunnel intrados.
Technical support at every stage
EKKAF, with Fibre Net's technical department, supports designers and contractors with strengthening calculation software, standard DWG drawings, bill-of-quantities items, technical datasheets and declarations of performance, plus on-site application guidance with quality control testing.
Frequently asked questions
What is the difference between FRCM, CRM and FRP?
FRP uses fibres (usually carbon) with epoxy resins and delivers maximum strength at minimal thickness. FRCM combines fibre meshes with an inorganic mortar matrix from 8 mm thick, compatible with damp substrates and historic buildings. CRM uses preformed rigid GFRP/CFRP meshes with about 3 cm of structural mortar for full-section masonry strengthening.
Are the systems suitable for listed and heritage buildings?
Yes. FRCM and CRM systems with natural hydraulic lime (NHL) matrices are breathable, chemically compatible with historic masonry and reversible — they meet the reversibility criteria required for protected heritage.
Which certifications accompany the Fibre Net systems?
FRCM systems are assessed to EAD 340275-00-0104 and designed to CNR-DT 215/2018; CRM to EAD 340392-00-0104; FRP to CNR-DT 200 R2/2025, with CE marking on preformed bars and anchors. Products carry declarations of performance and EPD.
Does EKKAF also provide design support?
Yes. EKKAF, together with Fibre Net's technical department, supports the designer with preliminary sizing, calculation software, standard DWG drawings, technical datasheets and on-site application guidance.
Working on a strengthening project? Send the structural study to info@ekkaf.gr for a system proposal and material take-off.