Atterberg Limits test is performed in order to differentiate the state of the soil from the four main states of soil namely;
2) Semi solid
The test is performed using a apparatus called Cassagrande.
1) Liquid limit : Water content where cut close at 25 blows.
2) Plastic limit : Water content at the point where 3mm threads start to crumble.
3) Plasticity index : LL – PL
4) Liquidity index : (w- PL) / PI