The Carbon Fibre Reinforcement Polymer (CFRP) laminate reinforcing technology provides a solution for strengthening problems of concrete structures. It provides high strength, high modulus of elasticity, and outstanding fatigue resistance. It is a very lightweight non-corrosive material, which requires minimal preparation of laminates, and is alkali resistant. It is very economic requiring very short contract times.
Once bonded to concrete, the CFRP strips have very high tensile strength whilst they remain at ambient temperature. However as the temperature increases, its properties will begin to deteriorate. Through the application of Vermitex® ‘TH’, LAF has developed a CARBON FIBRE FIRE PROOFING system which is summarized by CSIRO in assessment FCO-2861 in order to help maintain the temperature of the CFRP below 80°C. In some cases, the CFRP FIRE PROTECTION’s temperature requirement is lowered to a very stringent 70°C so that the epoxy and CFRP’s tensile strength is retained in the event of a fire.
A CFRP FIRE PROOFING application may be carried out by hand but preferably by mechanical means to reinforcement that is fixed by approved means and with specified clearances over the CFRP strips.