**3. Bentonite modified cement mortar**

The bentonite's behavior in concrete mortars like consistency, introductory and last setting times, strength activity, and compressive strength was accounted for in a few investigations.

#### **3.1 Normal consistency**

Bentonite shows 75% as consistency value while Ordinary Portland Cement (OPC) accomplishes at 30–35%, 21 percentage bentonite-OPC combination achieves 35% consistency was accounted for by Memon et al. [10]. Nonetheless, it has been seen that the consistency is straightforwardly relative to how much bentonite is added [21].
