Experimental Investigation on Self-Healing Efficiency of Mortar with Bacillus subtilis and Bacillus cereus

Figure 5

Images from 3D optical microscope for evolution of crack healing of control mortar (C-M-0) during (a) 0 day, (b) 7 days, (c) 14 days, (d) 21 days, and (e) 28 days.

(a)

(b)

(c)

(d)

(e)