Mrákotín
- 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 | 2620 | 0,5 | 0,02 |
| Real density | 2 | kg/m3 | 2650 | - | - |
| Open porosity | 6 | % | 0,9 | 0,014 | 1,6 |
| Total porosity | výpočtem | % | 1,2 | - | - |
| Apparent porosity | výpočtem | % | 0,8 | - | - |
| Water absorption | 6 | % | 0,31 | 0,003 | 0,9 |
| Water absorption coefficient | 3 | g.m-2.s-1/2 | 1,7 | 0,14 | 8,7 |
| Linear thermal expansion | 8 | 106.K-1 | 7,7 | 0,85 | 10,9 |
| Compressive strength | 10 | MPa | 171,5 | 17,7 | 10,3 |
| Flexural strength | 10 | MPa | 16,8 | 0,7 | 4,2 |
| Abrasion resistance | 1 | mm | 18,0 | - | - |
