Effects of Corn Stalk Fly Ash (CSFA) on the Mechanical and Deformation Properties of Cemented Coal Gangue Backfill

Figure 4

Stress-strain-acoustic emission ring-down count and fracture points during uniaxial loading at day 28 with different substitution rates: (a) 0% (C0), (b) 10% (C1), (c) 20% (C2), (d) 30% (C3), and (e) 40% (C4).

(a)

(b)

(c)

(d)

(e)