SILVER Grey Bohus
Location: Rabbalshede, Bohuslän. Geo coordinates, WGS84 dec 58.612578 11.507157
| Technical properties | Value | Unit | Standard |
| Compressive strength | Average: 2249
Standard devation: 27 Lower expected value: 193 |
Mpa | EN 1926 |
| Flexural strength | Average: 25,6
Standard devation: 1 Lower expected value: 23,6 |
Mpa | EN 12372 |
| Frost resistance incl. flexural strength | Ultrasonic speed change:
Weight change: Flexural strength change after: Flexural strength change: |
%
% Mpa % |
EN 12371 |
| Abrasion resistance (thickness based) | Average: 5,6 | Cm/50 cm | DIN 52108 |
| Abrasion resistance (weight based) | Average: 5602 | Mm3 | EN 14157 |
| Water absorption | Average: 0,19 | Weight % | EN 13755 |
| Apparent density | Average: 2620 | Kg /m³ | EN 1936 |
| Breaking load at dowel holes | Average: 2750 | N | EN 13364 |
| Slip resistance, honed surface (dry) | Average: | SRV | EN 14231 |
| Slip resistance, honed surface (wet) | Average: | SRV | EN 14231 |
| Rupture energy | Average: 5 | J | EN 14158 |
| Petrographic composition: | Standard: EN 12407 | Value: | |
| Potassium feldspar | 28 % | ||
| Plagioclase | 26 % | ||
| Qvarz | 38 % | ||
| Biotite | 5 % | ||
| Chlorite | 2 % | ||
| Muskovit | 3 % | ||
| Opaques | 0,2 % | ||
| Granat, Flourite | 0,4 % |
