Overview
Gneiss is a common and widely distributed type of metamorphic rock. Gneiss is formed by high temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. It has a high degree of durability because it is a foliated metamorphic rock. Material is used for stone cladding and flooring, also for decoration of different spaces.
| Physical and chemical properties of gneiss | |
|---|---|
| Volume density ρ - g/cm | 32.58 |
| Specific density ρs - g/cm | 32.66 |
| Pore volume n - % | 3.01 |
| Pore coefficient е | 0.031 |
| Compressive strength in air dry state R H C - x105 Pa | 378.40 |
| Water absorption - % | 0.49 |
| Compressive strength in absorbed water state R H В – x | 105 Pa344.9 |
| “Deval” wear - % | 5.5 |
| Compressive strength after 25-fold freeze state R H 3 | x105 Pa - 325.9 |
| Cold resistance coefficient | 0.86 |
| Loss of mass after 25-fold freeze - % | 0.12 |
Our Gneiss Products
Of Gneiss We Can Offer You:
- RANGED PLATES: natural, non processed, used for cladding and flooring over a concrete base
- PLATES FOR CUTTING AND FLOORING: natural, non processed
- PROCESSED PLATES, used for CLADDING and FLOORING over a concrete base
- PROCESSED PLATES, used for FLOORING
- BUILDING STONE /brickwork/
- PAVING BLOCKS
- STONE FOR GLITZ BRICKWORK /decorative/
We offer processing and cutting of stones by individual sizes, given by the client