| Class or grade of polystyrene concrete by compression strength | Strength indicators of items, МРа at least | |
| For compression | For stretching upon bending | |
| М2/D250 | 0.21 | 0.08 |
| М2.5/D250 | 0.27 | 0.1 |
| М3.5/D250 | 0.45 | 0.15 |
| В0.35/D250 | 0.50 | 0.25 |
| В0.5/D300 | 0.73 | 0.35 |
| В0.75/D400 | 1.09 | 0.50 |
| Grade of polystyrene concrete by average density | Heat conductivity ratio in dry condition under temperature of (25±5)°С,
W/ (m*К), not exceeding |
| D250 | 0.075 |
| D300 | 0.085 |
| D350 | 0.095 |
| D400 | 0.105 |
Forms and Major Dimensions of Polystyrene Concrete Tiles:
in millimeters
| Name of product | Major dimensions | ||
| Length, L | Width, B | Thickness, H | |
| Polystyrene concrete heat insulation items D250- D250, M2-В0.75 | 600±7 | 400±7 | 60±5 |
Note – Upon concurrence of volumes with consumer, output of items of different geometrical dimensions is allowed.
Estimated ratios:
|
Grade by density |
Estimated ratios in operating conditions |
|
Vapor permeability, (m2·h·Pa)/mg |
|
|
250 |
0,110 |
|
300 |
0,100 |
|
350 |
0,090 |
|
400 |
0,085 |