Effect of Ca/Al Ratio on Stabilization/Solidification of Lead-Contaminated Soil by Ettringite

Figure 8

SEM pictures of solidified samples at 90 d. (a) Ca/Al = 4 : 3; (b) Ca/Al = 6 : 3; (c) Ca/Al = 8 : 3; (d) Ca/Al = 10 : 3.

(a)

(b)

(c)

(d)