Question

Surkhi is added to lime mortar to impart the following property:

• A. Improve workability
• B. Improve solubility
• C. Impart hydraulicity
• D. Impart ductility

Hint:

Surkhi is used in lime mortar to impart hydraulicity, making it suitable for use in waterlogged conditions.

Answer 1

The Correct Option is C

Surkhi is finely ground burnt clay or brick powder. When added to lime mortar, it improves the hydraulic properties of the mortar, making it set and harden in the presence of water. This process is known as imparting hydraulicity, which allows the mortar to set even under damp conditions.