Thermal Conductivity of Dry Sands Treated with Microbial-Induced Calcium Carbonate Precipitation

Figure 9

SEM images of pure sands and MICP-treated sand. (a) Untreated sand at magnification of 300x. (b) MICP-treated sand at magnification of 500x. (c) MICP-treated sand at magnification of 1000x. (d) MICP-treated sand at magnification of 3000x.

(a)

(b)

(c)

(d)