With a fire resistance of minimum 4 hours, the SL-Deck is the most fire resistant prefabricated concrete deck. The deck thus fulfulls the strictest requirements without need for fire insulation.
The high fire resistance is due to the deck design, where the prestressed reinforcement is protected by the insulating and fire resistant lightweight concrete. Lightweight concrete mainly consists of LECA (light expanded clay aggregate), which is literally ”born” in fire as it is produced in ovens at app. 1,200 degrees celcius.