DETERMINATION OF THE LIQUID, PLASTIC, AND SHRINKAGE LIMITS
The liquid limit is determined from an apparatus (Figure 4.4) that consists of a semispherical brass cup
that is repeatedly dropped onto a hard rubber base from a height of 10 mm by a cam-operated mechanism.
Arthur Casagrande (1932) developed this apparatus, and the procedure for the test is called the
Casagrande cup method. Read this topic