Question

What is liquidity and plasticity of soil?

Answer 1

Plasticity

It is defined as the property of cohesive soil which posses the ability to undergo changes of shape without rupture or a change in volume.

Consistency or Liquidity Index of Soil(LI) It is defined as the natural moisture content of the soil in excess of the FL expressed as a percentage of the PL, i.e., { (Natural moisture content—PL )/(Liquid limit—Plastic limit) }x 100 Percent. and is a measure of the consistency of the soil.