Cement Lime Mortar

This should be prepared by mixing cement, lime putty or dry hydrated lime powder and sand in specified proportions. Mixing should be done in a mechanical mixer. 

Lime putty and sand should be mixed and ground as earlier described. Then cement should be added.

In case dry hydrate lime powder is used all ingredients may be mixed simultaneously In mechanical mixture. The mortar should be used within two hours of mixing. 

In case of hand mixing cement and sand should first be mixed dry thoroughly. Lime putty should be mixed with water to make milk of lime, which should be added to the mixture  of cement and sand. The mixture should be kneaded back and forth for about ten minutes with addition of milk of lime to obtain mortar of workable consistency.