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Limestone Varieties /
Colors |
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| PHYSICAL PROPERTIES OF LIMESTONE |
| Physically, Limestone are Quite
impervious, Hard, Compact, fine to very fine grained calcareous
rocks of sedimentary nature. |
| Hardness |
3 to 4 on Moh's Scale |
| Density |
2.5 to 2.65 Kg/m3 |
| Compressive Strength |
1800 to 2100 Kg/cm2 |
| Water Absorption |
Less than 1% |
| Porosity |
Quite low |
| Weather Impact |
Resistant |
| CHEMICAL
PROPERTIES OF LIMESTONE |
| Chemically, both limestone and marbles
are siliceous calcium carbonate rocks. |
| Lime (CaO) |
38-42% |
| Silica (SiO2) |
20-25% |
| Alumina (Al2O3) |
2-4% |
| Other Oxides like Na, Mg
|
1.5 to 2.5% |
| Loss On Ignition (LOI) |
30-32% |
| Limestone, like marble and other
calcareous stones, are referred to as acid sensitive. Calcareous
stones are readily dissolved in acid, therefore acidic products
should not be used on limestone and marbles. |
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