Perlite - more than just volcanic rock
Perlite is originally a glassy, volcanic rock with a density of 1100 kg / m³. The granulate expands volume up to 20 times its original volume when heated to a temperature of 850 ° to 900 ° C. Pore formation reaches a density of 35 kg / m³ up to 165 kg / m³. The expanded material is bright white afterwards.
Applications of Perlite Perlite can be used in a variety of ways, including: as floor insulation in the construction industry. Perlite is non-flammable, environmentally friendly, chemically very stable, rot-proof and odourless. Perlite is a heat-insulating material that bonds easily and can be processed with mortar.
Characteristics of Perlite:
- Density: 35-165 kg / m³
- Lambda: 0.04 to 0.06 W / m. K
- PH: 6.5-8
- Solubility: insoluble in water and organic solvents
- Fire behaviour: non-flammable - Fire class A1
- Melting point: + 1260° C
- Appearance: grainy / granular, white / grey-white
- Volatile organic compounds: no
- Asbestos: no
Chemical composition (main elements)
- Silicon iO2 65-80%
- Aluminium Al2O3 12-16%
- Magnesium oxide MgO 0.3-1.0%
- Iron oxide Fe2O3 0.5-1.0%
- Sodium oxide Na2O 3.0-4.5%
- Calcium oxide CaO 0.5-2.0%
- Water H2O 2.0-4.0%
- Loss on ignition 1,5-