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

Figure 15

Microscopic damage characteristic diagram of samples (IOT replacement rate is 30%) under 200 F-T cycles: (a) RAC0-IOT3; (b) RAC3-IOT3; (c) RAC5-IOT3; (d). RAC7-IOT3.

(a)

(b)

(c)

(d)