Specification |
Kalsa - |
Calcium Silicate Bricks |
To - |
BS EN 771-2:2003 |
|
Description |
Manufactured from a controlled mixture of sand and lime, formed by mechanical pressure and cured under high pressure steam.
A process identical to the natrual formation of rock or marbles. |
Shape |
Uniform and consistent in shape and size with parallel faces. |
Dimension |
1) 215 x 102 x 65mm (±2mm)
2) 215 x 115 x 65mm (±2mm)
2) 240 x 115 x 115mm (±2mm) |
Colour |
"Nature" calcium silicate bricks are white in colour, giving a maximum light reflection without glare. Other colour can be produced by incorporating permanent inorganic colour pigments. |
Weight |
2.8 to 5.0 Kg per brick |
Density |
1800 kg/m³ to 2000 kg/m³ |
Compressive Strength |
BS EN 771-2:2003
Class 15; Minimum 15.0 MN/m³ |
Water Absorption |
14% Average |
Drying Shrinking |
0.01% Average |
Sound Insulation |
without plaster
|
: STC [dB] 49 |
| with plaster |
: STC [dB] 51 |
|
Thermal Insulation |
| Resistance R |
= 0.125m² K/W |
| Conductivity K |
= 0.82 W/mK |
|
Fire Resistance |
| BS 476-PT.22 |
: 1987 |
|
|
| Half brick wall |
- |
Integrity |
≥ 130 minutes |
| |
|
Insulation |
≥ 130 minutes |
| Full brick wall |
- |
Integrity |
≥ 250 minutes |
| |
|
Insulation |
≥ 250 minutes |
|
Durability |
No significant weathering effects from wetting and drying.
Highly resistant to heat & frost action.
Free from effloresances and unaffected by the presence of soluble salt in sea air.
Strength will increase gradually due to reaction by carbon dioxide in the atmosphere. Resistant to attack by sodium sulphate.
Unaffected by sulphate bearing soil and ground water.
Unaffected by the presence of chlorine in the atmosphere, e.g. in swimming pool buildings. |
