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| Technical Information | Value | ASTM/ INDIAN Standards |
| Water absorption, % by weight | 0.09 | C-97 |
| Density (Bulk specific gravity) | 2644 | C-97 |
| Modulus of rupture, N/ mm2 | Dry – 11 Wet – 15 | C-99 |
| Compressive Strength N/ mm2 | Dry – 117 Wet – 100 | C-170 |
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
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% |
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