TYPES OF LIME

 Lime and its types

Lime:- Lime is a versatile material that is commonly utilized in building construction. Lime is produced from the calcination of its ore which is limestone. Calcination is the process in which limestone is heated up to redness, causing the loss of carbon dioxide and moisture from it and resulting in the creation of lime. Lime which is produced from relatively pure limestone is called Quick lime. 

Types of Lime:- There are three types of lime used in construction i.e. 

1.  White/ pure/ fat/ rich lime:- This lime is made from moderately pure limestone having percentage purity 90-95% and clay concentration 5-10%. This is termed as Pure Lime. This lime possesses high plasticity and moderate setting time, hence is generally used in work where strength is not required.
2. Water/ hydraulic lime:- This lime is made from impure limestone having percentage purity 70-85% and clay concentration 15-30%. This form of lime does not show slaking and sets rapidly, hence is generally used for those works where strength is required.
3. Impure/ poor lime:- This lime is made from moderately impure limestone possessing high percentage of impurity and clay concentration greater than 30%. This form of lime does not slake, hardens slowly, therefore it is generally used for inferior construction like brick walls.