Řeka
- Quarry
- Stone appearance
- Petrographic examination
- Physical properties
- Frost resistance
- Particle size distribution by image analysis
- Chemical and phase composition
- Notes and literature
Physical properties
| Parameter | Number of measurement | Unit | Value | Standard deviation | Coefficient of variation [%] |
|---|---|---|---|---|---|
| Apparent density | 6 | kg/m3 | 2530 | 2 | 0,08 |
| Real density | 2 | kg/m3 | 2670 | - | - |
| Open porosity | 6 | % | 4,9 | 0,1 | 1,9 |
| Total porosity | výpočtem | % | 5,3 | - | - |
| Apparent porosity | výpočtem | % | 4,6 | - | - |
| Water absorption | 6 | % | 1,83 | 0,08 | 4,2 |
| Water absorption coefficient | 3 | g.m-2.s-1/2 | 11,5 | 0,4 | 3,7 |
| Linear thermal expansion | 8 | 106.K-1 | 11,0 | 1,57 | 14,4 |
| Compressive strength | 10 | MPa | 148,8 | 17,9 | 12,0 |
| Flexural strength | 10 | MPa | 11,1 | 1,0 | 9,0 |
| Abrasion resistance | 1 | mm | 20,50 | - | - |
