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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Rahul Bhartia
Indian Stones
Bhilwara,
Rajasthan,
India