Fire performance of a hollow core slab without additional fire protection is REI 30 – REI 120 depending on slab type. The additional fire protection of the hollow core or massive concrete slab slows down the temperature rise of reinforcing steels. The goal is to maintain the bearing capability in the side on tension.
For massive concrete slabs there are no test results available. But based on small scale fire tests and calculations it can be estimated that when the thickness of a massive concrete slab is 100mm, PAROC FPS 14 (50mm) will provide a fire resistance of 240 minutes for the structure.
Fire protection slabs should be installed with mechanical fasteners, 8 pcs/slab. Slabs can also be fixed with adhesive if the surface of the protected material is smooth and the thickness of the fire protecting product is max. 50mm.
Fire protection with PAROC CGL -products
For the reinforced concrete slab (thickness 120mm). PAROC CGL 20cy (60mm) will provide fire resistance of 240 minutes. |
