The presence of NS increases the required water of standard consistency and elongated the setting times.
Cement mortars were tested for the standard consistency, setting times and mechanical properties.
The rheological properties of blended cement paste studied are standard consistency, initial setting time and final setting time.
Accordingly, cement quality was evaluated by determining setting times, standard consistency, expansibility and compressive strength at 2, 7 and 28 days.
The pastes were prepared with the required water of standard consistency, cured under tap water until time of testing (1, 3, 7 and 28 days).
The comparison of perceptual is clearly observed that water requirement to make the paste of standard consistency increased with the increase in bentonite content, principally in functionalized form.
The PFA and HCWA binder phase with small dosage of sodium silicate was characterized in terms of its standard consistency and setting times.
The results showed clearly that as the dosage of admixtures increases, the water of standard consistency decreases, this leads to a decrease in the total porosity of the cement pastes, and consequently the compressive strength value increases.
The produced blended cements were tested by determining their initial and final setting times, standard consistency, flow of normal mortar, soundness and compressive strength at 2, 7, 28, 56 and 90 days.
This is mainly due to that, the presence of superplasticizer with delayed addition process of mixing, reduces the water demand for standard consistency, decreases the total porosity, and increases the bulk density and consequently the compressive strength of cement pastes.
