Effect of Superabsorbent Polymer (SAP) Internal Curing Agent on Carbonation Resistance and Hydration Performance of Cement Concrete

Figure 14

Micromorphology of cement concrete at different ages of control group: (a) 3 d, (b) 14 d, (c) 28 d, and (d) 56 d.

(a)

(b)

(c)

(d)