Carbon fibre reinforced polymer, or CFRP, lets us add strength to an existing structure with very little added weight or thickness.
What it is
CFRP is carbon fibre in sheet, strip or fabric form, bonded to concrete with structural epoxy. Once bonded, it works with the existing reinforcement to carry extra tension, or to confine columns.
When it makes sense
It is a strong option when:
- Loads are increasing because of a change of use or new equipment
- Openings have been cut and capacity needs to be restored
- Steel jacketing would take too much space or need hot works
- The programme leaves little room for disruption
What makes it work
The fibres are only as good as their bond. Surface preparation, correct primers and environmental control during application make the difference, especially in summer heat. Pull-off tests on site confirm the bond before handover.
Carbon fibre is a precise tool. It rewards careful design and careful hands.
KEY TAKEAWAYS
- CFRP adds capacity with minimal added size or weight.
- A structural engineer should always confirm the design.
- Surface preparation and bond testing are not optional.
