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Bordo |
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| Bordo |
| Physical, mechanical and technological specifications : |
| Hardness |
(Mohs) |
: |
4,5-5 |
| Unit Volume Weight |
(gr/cm3) |
: |
2,72 |
| Density |
(gr/cm3) |
: |
2,75 |
| Water absorption at atmospheric pressure |
by weight (%) |
: |
0,1 |
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by volume (%) |
: |
0,1 |
| Water absorption at boiling water |
by weight (%) |
: |
0,3 |
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by volume (%) |
: |
0,7 |
| Porosity |
(%) |
: |
0,6 |
| Compressive strength |
(Kg/cm2) |
: |
522 |
| Compressive strength after freezing |
(Kg/cm2) |
: |
500 |
| Strength to blow |
(Kg/cm2) |
: |
10 |
| Strength to bending |
(Kg/cm2) |
: |
133 |
| Modulus of Elasticity |
(Kg/cm2) |
: |
2,2x10³ |
| Ratio of fullness |
(%) |
: |
98,9 |
| Degree of pores |
(%) |
: |
1,1 |
| Average Abrasion Loss |
(cm3/50 cm2) |
: |
34,3 |
| Average Tensile Strength |
(Kg/cm2) |
: |
40 |
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| Chemical analysis |
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| CaO.................................................................................................... |
47,8 |
| MgO.................................................................................................... |
0,62 |
| SiO2.................................................................................................... |
8,88 |
| A12O3................................................................................................. |
- |
| Fe2O3................................................................................................. |
- |
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