 |
| |
 |
 |
|
|
|
|
About us:
"Rumba" Ltd is engaged with manufacturing
of gneiss plates. Rockfacing material - gneiss.
Our gneiss is famous with its solidity, hardiness
of wide range of temperature amplitudes (freezing)
and profitable price. The stone is the perfect end
of every Your project. It is suitable for facing of
buildings, alleys, paths, fences, pools, fireplaces.
The quality and accuracy of realization of Your order are our priority.
|
|
golden-brown
|
|
silvery-grey
|
|
Physic and
chemical properties of the gneiss:
Volume density |
ρ |
2.58 |
g/cm3 |
Specific density |
ρs |
2.66 |
g/cm3 |
Pore volume |
n |
3.01 |
% |
Pore coefficient |
е |
0.031 |
- |
Compressive strength
in air dry state |
R HC |
378.4 |
x 105Pa |
Water absorption | |
0.49 |
% |
Compressive strength
in absorbed water state |
R HВ |
344.9 |
x 105Pa |
“Deval” wear |
|
5.5 |
% |
Compressive strength
after 25-fold freeze state |
R H3 |
325.9 |
x 105Pa |
Cold resistance
coefficient |
|
0.86 |
- |
Loss of mass after
25-fold freeze |
|
0.12 |
% |
|
Sights:
Ivaylovgrad dam, antiqe villa Armira, marmory fortress of
Lyutica, Aterenski bridge, mound around village Svirachi,
tombs, religion monuments and others.... |
|
 |
|
|
|
