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When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported as:

When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported as: Correct Answer Zero

Explanation

Plasticity index (PI) is the range of water content over which the soil remains in the plastic state.

Mathematically defined as,

  • Plasticity Index = Liquid Limit – Plastic Limit.
  • This parameter cannot be negative if plastic limit, in some exceptions, is larger than the liquid limit, it is considered to be zero and soil is considered non-plastic.
  • The plasticity of a soil is its ability to undergo deformation without cracking. It is an important index property of fine-grained soil, especially for clayey soils.The adsorbed water in clayey soils leads to the plasticity of the soil.
  • Generally, sands do not possess any plasticity and their plasticity index is assumed to be zero.

 

Related Questions

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