Fatigue Performance of Rubber Concrete in Hygrothermal Environment

Figure 13

Microstructures of the interfacial transition zone, subjected to (a) 0 wet-dry cycles, (b) 0 wet-dry cycles, (c) 14 wet-dry cycles at 20°C, (d) 14 wet-dry cycles at 60°C, (e) 21 wet-dry cycles at 20°C, (f) 21 wet-dry cycles at 60°C, (g) 28 wet-dry cycles at 20°C, and (h) 28 wet-dry cycles at 60°C.

(a)

(b)

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(e)

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(g)

(h)