A Study on the Durability of Dispersive Soils Improved by Alum in Western Jilin Province of China

Figure 6

Observation of the pinhole test: (a) 0% alum, (b) 1% alum, (c) 1.5% alum, (d) 2% alum, (e) 2.5% alum, (f) 3% alum, and (g, h) turbidity of water flow (from left to right are mixed with 3%, 2.5%, 2%, 1.5%, 1% alum, and 0 alum).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)