Research Article

Effects of Nonaqueous Phase Liquids Pollution on the Permeability and Microstructure of In-Filed and Laboratory Soaked Contaminated Clay Soils

Figure 9

Layer (4) of the change of microstructure by SEM. (a) Uncontaminated clay. (b) The field contaminated clay. (c) Indoor soaked contaminated clay.
(a)
(b)
(c)