Fig. 14

SEM image of the sprayed brick samples after 24 h of floating in the water at different magnification (a) 1 mm, (b) 2 μm, (c) 10 μm and, (d) 1 μm magnification.

SEM image of the sprayed brick samples after 24 h of floating in the water at different magnification (a) 1 mm, (b) 2 μm, (c) 10 μm and, (d) 1 μm magnification.