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Stone House Bulgaria - Gneiss supply Download Gneiss IVGB properties

Gneiss is often found rock formed by the metamorphosis of granite rocks under the influence of high pressure and temperature. The combination of high wearing resistibility, lower hygroscopic capacity, high resistibility under different climate conditions, rough unslippery surface and also good prices and huge colors variances make gneiss rock preferred choice for revetments.

Physical - Chemical Properties Gneiss IVGB golden – brown

Density volume ρ	g/cm³	2.58
Specific density	g/cm³	2.66
Pores volume n	%	3.01
Coefficient of pores		0.031
Hygroscopicitiy	%	0.49
Strength of pressure in dry conditions R _H ^C	x10⁵ Pa	378.40
Strength of pressure in moisture conditions R _H ^В	x10⁵ Pa	344.90
Strength of pressure after 25 cycles of freezing R _H ³	x10⁵ Pa	325.90
Loose of weight after 25 cycles of freezing	%	0.12
Wearing according “Deval”	%	5.50
Coefficient of cold resistance		0.86

Our gneiss rocks are polygonal or formed in regular rectangular forms slabs.

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