CFRP Strengthening

Carbon Fibre Reinforced Polymer (CFRP) strengthening is commonly used to increase the flexural or shear capacity of concrete structures.

Over the last decade, Interspan has become the market leader in the application of CFRP-strengthening solutions for many of Australia’s builders and developers.

We promote innovative, proven solutions utilising various CFRP-based strengthening techniques depending on the nature of strengthening required for your project.

Our knowledge and experience in this area are second to none, and we’re extremely proud of the work our teams do every day.

CFRP can be applied to structures in many forms, based on the type of application and the location in the structure:


Laminates are the most common form of CFRP strengthening used in concrete structures today, representing the most economical way of utilising CFRP in concrete strengthening.


Fabrics have the flexibility to be laid around square or circular sections and are the most common form of CFRP used in column strengthening and beam shear strengthening. As well as carbon-based fabrics, both aramid and glass-based fabrics are also available and each has specific advantages in certain circumstances.


Circular CFRP rods are able to be easily recessed into the surface of the structure.

Near-Surface Mounted (NSM) Sections

NSM sections are typically small narrow sections installed into slots cut into the concrete surface.

Proprietary L Plates

Preformed “L” shaped laminates that are particularly effective for shear strengthening of beams with high concentrations of service penetrations.

CFRP Ropes

CFRP ropes or strings are useful for the provision of anchorage for laminates and fabrics.