Swelling Characteristics of Fractal-Textured Bentonite Eroded by Alkaline Solution

Figure 5

Scanning electron microscope (SEM) images of bentonite treated with a variety of alkaline solution concentrations: (a) distilled water, (b) 0.3 M NaOH, (c) 1.0 M NaOH, (d) 0.3 M KOH, and (e) 1.0 M KOH.

(a)

(b)

(c)

(d)

(e)