Investigating the Effect of Lignosulfonate on Erosion Rate of the Embankments Constructed with Clayey Sand

Table 4

Erosion rate index for unstabilized and stabilized samples by lignosulfonate in various hydraulic heads.

Soil combination	𝐻=50 mm	𝐻=100 mm	𝐻=200 mm	𝐻=300 mm	𝐻=400 mm
K	2.90	<2	<2	<2	<2
K + 0.4% L	3.52	3.80	4.11	4.17	4.32
K + 1% L	3.63	3.90	4.14	4.22	4.38
K + 2% L	3.68	3.95	4.25	4.28	4.64
K + 3% L	3.84	4.11	4.44	4.66	4.77

Note: K: clayey sand, L: lignosulfonate.