Fig. 9
From: Optimizing blended cement concrete strength using the Box-Behnken design technique

Visualized effects showing (a) contour plot and (b) 3D surface plot of the slump response at a 0.42 constant for water-to-binder ratio.
From: Optimizing blended cement concrete strength using the Box-Behnken design technique

Visualized effects showing (a) contour plot and (b) 3D surface plot of the slump response at a 0.42 constant for water-to-binder ratio.