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%|
|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.