Gneiss stone – Ivaylovgrad – extraction, processing, transport and sale of gneiss from Ivaylovgrad         
камък Гнайс Ивайловград The best and strongest gneiss stone from Orpheus' mountain, manufactured by “IAK” LTD - Ivaylovgrad, Bulgaria
 



“IAK” LTD offers to its client gneiss stone in the colors silver-grey and golden-brown, in different shapes and sizes, as well as working on an individual site, given by the client.

All products of the company can be delivered to the client’s site with transport of "IAK" LTD at special cost.

Choose the best and most solid gneiss stone from Orpheus’ mountain.

Gneiss stone – golden-brown color

  • Qualities: hot and cold resistant, extremely durable to atmospheric influences, nonslip rugged surface
  • Application: Suitable for outdoor floorings and revetments
  • Color: Golden-brown
  • Sizes and types offered

Gneiss stone – silver-grey color

  • Qualities: hot and cold resistant, extremely durable to atmospheric influences, nonslip rugged surface
  • Application: Suitable for outdoor floorings and revetments
  • Color: Silver-grey
  • Sizes and types offered




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