Experimental Study and Microscopic Analysis on Frost Resistance of Iron Ore Tailings Recycled Aggregate Concrete

Figure 16

Microscopic damage characteristic diagram of samples (RCA replacement rate is 30%) under 200 F-T cycles: (a) RAC3-IOT0; (b) RAC3-IOT3; (c) RAC3-IOT5; (d) RAC3-IOT7.

(a)

(b)

(c)

(d)