You are using an outdated browser version not supported by this website.
Click here to upgrade your browser

FRP Carbon Fibre Reinforcing Systems

Simpson Strong-Tie Composite Strengthening Systems (CSS) provide efficient fibre reinforced polymer (FRP) solutions for the structural reinforcement and strengthening of concrete, masonry and timber structures in need of repair or upgrade. The CSS are designed, tested and manufactured to offer high-performance solutions and lasting results.

Fibre Reinforced Polymer (FRP) Systems are simply defined as high-strength and lightweight reinforcements created by combining carbon (CFRP) or E-glass fibres with a polymer material. The performance characteristics of FRP strengthening have become increasingly popular in construction and retrofit applications, specifically in ageing, damaged or overloaded concrete structures.

The primary benefit of FRP systems versus traditional retrofit methods is that significant flexural, axial or shear strength gains can be realised with an easy-to-apply composite that does not add significant weight or mass to the structure.

Steel plate bonding, concrete section enlargement and steel jacketing have been the renovation methods of choice for decades, yet corrosion, bond degradation and installation difficulty are consistent challenges to overcome, and the resultant retrofit generally adds weight, reduces usable space, clearance, or both.

There are three common scenarios where FRP has proven to be more economical than traditional strengthening methods:

  • Increases to a structure’s load capacity beyond the original specification or expectation
  • Seismic strengthening
  • Repairs to concrete structures that become damaged over time
Key Features

In many cases, FRP is the most economical choice given the reduced preparation and labour costs. FRP can usually be installed without taking the structure out of service.

  • Economically increase capacity without significant weight or mass
  • Extremely high tensile strength
  • Lightweight and user-friendly installation
  • Non-corrosive
  • Low aesthetic impact
  • Compatible with many finishes and protective coatings
Scope of Use

FRP has a wide range of consumer, commercial and public sector applications. In the commercial and public sectors, the most common FRP application is concrete strengthening.

  • Seismic Retrofit: Shear Strengthening, Displacement/Ductility, Life Safety
  • Damage Repair: Concrete structures that become damaged over time, Deterioration/Corrosion, Blast/Vehicle Impact
  • Load Rating Upgrade: Increased Live Loads, New Equipment, Change of Use
  • Defect Remediation: Size/Layout Errors, Low Concrete Strengths
  • Blast Mitigation: Hardening, Progressive Collapse
  • Structures: Buildings, Bridges, Tanks/Silos, Parking Structures, Piers and Wharfs, Underwater Structures, Tunnels, Pipes
Technical Brochure
Full Catalogue: Timber Connectors NZS3604


A leader in structural systems research, testing and innovation, Simpson Strong-Tie is among the world's largest suppliers of solutions and products, helping build safer, stronger structures.

Product Enquiries

News from Simpson Strong-Tie

Developing High-Capacity Tension Straps for Mass Timber Engineering NEW
Quik Drive Screw Fixing Contributes to Acoustic Solutions
Watch Simpson Strong-Tie's Weatherboard Screw Installation in Action
Get a free weekly digest of essential news

New and updated architectural products, design solutions, inspiration, technical advice and more when you sign up for EBOSS.