Grey - Gneiss
Bulgaria
Item Details
Quarry Location:
Orpheus Mountain (Rhodope Mountains),Ivaylovgrad
Water Absorption:
0.49 %
Density:
2660 kg/m3
Recommended Usage:
Wall and floor applications, countertops, mosaic, fountains, pool and wall capping, stairs, window sills
Finishing Surface:
Sawn Cut, Sanded, Rockfaced, Sandblasted, Bushhammered, Tumbled, Thermalled, Natural Cleft, Weatheredge
Additional Names:
Ivaylovgrad Silver Grey Gneiss,Gneiss Srebristo Siv,Ivailovgrad Silver Grey Gneiss,Silver Grey Gneiss
Description:
Qualities: hot and cold resistant, extremely durable to atmospheric influences, nonslip rugged surface
Application: Suitable for outdoor floorings and revetments
Color: Silver-grey
PHYSIC AND CHEMICAL PROPERTIES OF GNEISS STONE FROM IVAYLOVGRAD
Volume density ρ g/cm3 2.58
Specific density ρs g/cm3 2.66
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 x105 Pa 344.9
“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