It is the mortar wherein fat lime or hydraulic lime is used as the binding material. The lime should be slaked before use. If fat lime is used, 2–3 times the volume of sand has to be used as it shrinks to a great extent. This lime mortar is not suitable for water-logged areas or in damp situations.
It is easy to handle and is highly plastic in nature. It has high cohesiveness and adheres to the surface and undergoes less shrinking. Although it is sufficiently durable, it hardens slowly. It is suitable for light-loaded structures and is used for construction purposes above the ground.
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