Table 1 Experimental plan.

Mixture conditions

w/c*

0.50 (for normal concrete mixture)

0.30 (for high-strength concrete mixture

Target air content (%)

4.5 ± 1.5

S/a**

0.35, 0.40, 0.45, 0.50, 0.55

W (kg/m3)***

165, 175, 185, 195, 205

Tests

Fresh state

Slump, slump flow, air content, unit volume weight

Hardened state

Compressive strength (@ 3, 7, and 28 days)