Perlite as filling material is used in different type of constructions:
- in layers between an internal and external wall laying;
- between a wall laying and internal finishing;
- in the constructions of walls from hollow wares;
- in all of emptinesses of a wall laying;
- as a substitute of quartz sand in the cement gatherings of roof and chaffs.
In this case the decline of heatinsulation is possible on 50% and more.
Technical characteristic of construction materials used to heat-insulate the walls
| Parameters | Unit | Silicate cotton | Fiberglass coatings | Cellular polystyrene | Perlite | Perlite concrete | ||||
| Cellular polystyrene plates (CPP) | Extruded Cellular polystyrene (ECP) | Polystyrene concrete | Polystyrene concrete Isocyanate foam (Foamex) | Heat-insulating perlite | Constructively heat-insulating perlite | |||||
Density | kg/m3 | 75 - 225 | 130 -175 | 15 - 40 | 31-45 | 150-600 | 60-200 | 50-300 | 250-500 | 500-1000 |
Thermal conductivity under average temperature of 25±5° | W/ (m°Ñ) | 0,042-0,046 | 0,030-0,052 | 0,027-0,040 | 0,028-0,030 | 0,055-0,085 | 0.035-0.06 | 0,043-0,093 | 0,07-,13 | 0,15-0,33 |
Thermal-cycling stability | °Ñ | 600 | -200 -+ 400 | up to 100 | -200- +85 | -200-+500 | -250 - +160 | -200- +900 | -200- +900 | |
Stability when compressed | KPa 40 | 20-60 | 65-250 | 250-500 | 350 | 200 | 100-600 | up to 60 | 200-300 | |
Steam penetration | high | high | low | low | low | low | high | low | ||
Frost-resistance | high | high | average | very high | high | high | high | high | ||
Inflammability | non-inflammable | non-inflammable | low-inflammable | low-inflammable | non-inflammable | G2 | non-inflammable | non-inflammable | ||
Comparative analysis of materials used to heat-insulate the walls
