An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting

Figure 11

SEM results of bare soil and improved soil. (a) Untreated. (b) 0.1 MPa. (c) 0.2 MPa. (d) 0.3 MPa. (e) 0.4 MPa.

(a)

(b)

(c)

(d)

(e)