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

Table 5

Qualitative classification of unstabilized and stabilized samples by lignosulfonate in various hydraulic heads based on hole erosion test results.

Soil combination	𝐻=50 mm	𝐻=100 mm	𝐻=200 mm	𝐻=300 mm	𝐻=400 mm
K	Very rapid	Extremely rapid	Extremely rapid	Extremely rapid	Extremely rapid
K + 0.4% L	Moderately rapid	Moderately rapid	Moderately slow	Moderately slow	Moderately slow
K + 1% L	Moderately rapid	Moderately rapid	Moderately slow	Moderately slow	Moderately slow
K + 2% L	Moderately rapid	Moderately rapid	Moderately slow	Moderately slow	Moderately slow
K + 3% L	Moderately rapid	Moderately slow	Moderately slow	Moderately slow	Moderately slow

Note: K: clayey sand, L: lignosulfonate.