Classification of Lime

CLASSIFICATIONS OF LIME

Based on the properties and usage, IS 712-1973 classifies lime as Class A, B, C, D and E.

Class A Lime: It is chiefly hydraulic lime and is usually supplied as hydrated lime. It is generally used for structural works.

Class B Lime: It comprises both hydraulic lime and fat lime and is supplied either as hydrated lime or as quick lime. It is commonly used for making mortar for masonry works.

Class C Lime: It is largely fat lime and is supplied both as quick lime and fat lime. It is frequently used for finishing coat in plastering and for white washing.

Class D Lime: It is similar to fat lime and contains large quantity of magnesium oxide. This is also normally used for white washing and for finishing coat in plastering.

Class E Lime: It is an impure lime stone, known as kankar. It is supplied as hydrated lime, which is available in modular and block form. It is mostly used for masonry mortar.