Can Plasticity Index Be Negative?

Can you have a negative plasticity index? Yes ? it can have have a negative value. A negative liquidity index means that the soil is drier that the plastic limit.

Can you have a negative liquidity index?

Liquidity index cannot be negative. ... Global Liquidity: Negative. Plastic limit is always less than plasticity index. More over, sum of Liquidity index and Consistency index equal to 1 (one) Flow index.

What does a low plasticity index mean?

The plasticity index (PI) is a measure of the plasticity of a soil. ... Soils with a high PI tend to be clay, those with a lower PI tend to be silt, and those with a PI of 0 (non-plastic) tend to have little or no silt or clay.