Experimental Study on Mechanical Properties of Cemented Paste Backfill under Temperature-Chemical Coupling Conditions

Figure 7

SEM results. (a) 35°C, water, 7 d; (b) 35°C, 3%, 7 d; (c) 35°C, 7%, 7 d; (d) 50°C, 7%, 7 d; (e) 50°C, 5%,28 d; (f) 50°C, 7%, 28 d.

(a)

(b)

(c)

(d)

(e)

(f)