| Property |
Test Description
|
Result |
|
Nominal Dry Density |
|
1950
kg/m³ |
| Effect
of Moisture |
Moisture
Movement Dry (25%C, 35%RH) to saturated
Water absorption dry to saturated
Water tightness to BS 4624 Part 981 Clause
15
|
0.2%
or 2mm/m
1.8% by weight
Permeable to water initially (48h) self
sealed
|
| Fire
Performance |
Building Regulations performance
Fire Propagation BS 476 Part 6 1981
Surface spread of flame BS 476 Part 7 1987
|
Class 0
1<12 1<6
Class 1
|
| Thermal
Performance |
Thermal
expansion between -20°C and +80°C
(ASTM C 531)
|
Not
greater than 20x10- 6 per °C |
| Flexural
Strength |
Dry
|
Greater
than 73 MN/m² |
| Resistance
to Freeze/Thaw Cycling |
50
Cycles @ -20°C, then water saturation
(BS 402 Appendix D¹ 1990)
|
No
loss of aggregate or cracking or delamination
of GRP |
Property
