Figure 2
From: Ultraviolet aging study on bitumen modified by a composite of clay and fumed silica nanoparticles
FESEM image of CS-NPs: (a) aggregation of clay nanoparticles form a unique chaotic structure of rosebud shape; the blue color represents uniform dispersion of CS-NPs, while aggregation of clay NPs and silica NPs are colored in red; (b) CS-NPs aggregation; and (c) uniform dispersion of CS-NPs.
