CFRP is approximately 60% lighter than steel with equivalent strength, making it easier to transport and install, especially in hard-to-reach areas .
Unlike steel, CFRP is immune to rust and corrosion caused by moisture, chemicals, and de-icing salts. This makes it ideal for structures in marine environments, chemical plants, and bridges.
Its resistance to environmental degradation leads to a longer service life for strengthened structures, reducing the need for frequent and costly repairs.
This is one of the most common uses of Dan Bro CFRP. It is used to restore or increase the load-bearing capacity of existing structures. Reasons for retrofitting include a change in building use, design or construction defects, updated building codes, or general aging. The primary techniques include products which provide :
CFRP laminates or sheets are bonded with epoxy to the surface of concrete, masonry, or steel members (beams, columns, slabs) to enhance their flexural or shear strength.
Narrow grooves are cut into the concrete cover, and CFRP rods or strips are embedded in them with epoxy. This method provides better bond and protection than other techniques .
Wrapping CFRP sheets around columns confines the concrete, significantly increasing its ductility and load-carrying capacity. This is a critical application for improving the earthquake resilience of buildings and bridges .
By extending the life of structures and reducing the need for replacements, CFRP contributes to lower carbon emissions over a building's entire service life . Life-Cycle Assessment is becoming a standard way to measure these benefits .
The future of CFRP projects involves combining this advanced material with digital tools. Real-time sensor data can be integrated into a virtual model of a CFRP-strengthened bridge, allowing for continuous, automated structural health monitoring and more precise maintenance planning. Dan Bro is working closely with technology providers in this field.