The determination of the plasticity index and the percentage by weight of clay mineral finer than 2μ present in the soil was done for two soil samples A and B. The ratio of plasticity index to the percentage of clay size particles for samples A and B are given in the table.
|Soil Sample||Index of percentage of clay size particle|
|Sample A||Less than 0.75|
|Sample B||Greater than 1.25|
The two soil samples A and B are classified as: