Durability Performance of Concrete with Fly Ash as Fine Aggregate Eroded by Chloride Salt

Figure 12

SEM images of concrete specimens. (a) OPC (NaCl-0%). (b) CFA-40 (NaCl-0%). (c) OPC (NaCl-3.5%). (d) CFA-40 (NaCl-3.5%).

(a)

(b)

(c)

(d)