Liquid Limit Device - Elabengineering

Liquid Limit Testing determines the water content at which soil changes from a liquid to a plastic state.The liquid limit data of soils is useful to compare mechanical properties of soil, such as lower shear strength and compressibility. Liquid limit is the water content at which soil passes from zero strength to an infinite strength. Liquid limit is that water content limit at which a part of soil, cut by a groove of standard dimensions flows together for a distance of 1.25cm under an impact of 25 blows in a standard liquid limit apparatus. It consists of a brass cup held on an adjustable bracket. The cup can be adjusted for a fall of 1 cm and can be raised an dropped on a rubber base of standard hardness by cam action. It is provided with one Casagrande grooving tool, one  grooving tool and a height gauge block. Now a days this motorized(120 rpm) device facilitated with counter is available.