Technical information VERMICULITE
Granular insulation for construction
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Lightweight
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High insulation value
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Fire-resistant
Applications
Technical information
Technical data VERMICULITE
| Characteristics VERMICULITE | |
|---|---|
| Color | Beige |
| Shape | Harmonica-shaped |
| Maximum usage temperature | 1000°C |
| Sintering temperature | 1260°C |
| Melting point | 1350°C |
| Thermal conductivity* | λ10 = 0.05 – 0.07 W/m°K |
| Specific heat | c = 840 – 1080 J/kg°K |
| Vapor diffusion resistance factor | μ = 3 |
| Flammability (NEN 6064) | non-flammable |
| Smoke rating (NEN 6066) | 0 |
| pH | 7.0 – 8.0 |
*depending on the density of the material
Grain gradation
| Gradation | Grain size | Weight per m3 |
|---|---|---|
| Grain 1 | 0 mm – 1.5 mm | 100 kg ± 20% |
| Grain 2 | 0 mm – 3.0 mm | 95 kg ± 20% |
| Grain 3 | 0 mm – 5.0 mm | 90 kg ± 20% |
| Grain 4 | 0 mm – 10.0 mm | 85 kg ± 20% |
Chemical analysis VERMICULITE
| Elements | |
|---|---|
| SiO2 | 35.0 – 41.0% |
| MgO | 20.0 – 24.0% |
| Al2O3 | 6.5 – 10.0% |
| Fe2O3 | 6.0 – 9.5% |
| H2O | 4.0 – 7.0% |
| CaO | 2.0 – 5.0% |
| TiO2 | 0.6 – 1.5% |
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