|
Origin
|
| Burguillos del Cerro (Badajoz) |
| General characteristics |
|
| Color |
Black |
| Grain size |
Middle
|
| Uniformity of color |
Minor variations
|
Block size
|
Big |
|
Technological characteristics
|
|
| Specific weight |
2,89 gr/cm3 |
| Water absorption |
0,1% |
| Compressive Strength |
815 Kg/cm2 |
| Flexural strength |
151 Kg/cm2 |
| Abrasion resistance |
2,7 mm |
| Impact resistance |
50 cm |
| Frost resistance |
0,12 % |
| Porosity |
0,28 % |
| Thermal shock |
Not altered |
| Surface treatments |
Sawn, polished, rustic, bush hammered.
|
|
Source: "Piedras y Granitos de Extremadura", Enrique Milán, San Vicente de Raspeig
|
|
|
Black Ochavo
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