Passive fire protection (Topic: 15022)

Passive fire protection of a structure means that the structure is insulated in such a way that the temperature rise in the structure and/or on the unexposed side of the structure is lower than the maximum allowable temperatures.

As insulation materials for passive fire protection of a structure, the following materials can be used :

- Rockwool

- Ceramic fibre

- Calcium silicate plates

- Vermiculite plates

- Gypsum plates

- Intumescent materials

- Spray-on cement based materials

Spray-on cement based materials will destroy aluminium's good ability to corrosion resistance and are for that reason not recommended as a fire insulation of aluminium alloy structures.

Intumescent materials have to be special tested on aluminium structures, to check out the necessary thickness of the layer.

References: [13, 21]