Question

COPILULILL. 4.29 A liquid limit test has been performed on a soil using the Casagrande cup. In this test, exactly 25 drops of the cup were required to close the bottom of the standard groove along a longitudinal distance of 1/2 in. A moisture content test was then performed on the tested soil and yielded the following results: Mass of soil + can before placing in oven 52.20 g Mass of soil + can after removal from oven 41.52 g Mass of can 22.40 g

Answer 1

Let W₁=Mass of soil+can before placing in Oven=52.20g

Let W₂=Mass of soil+can after removal from Oven=41.52g

Let W3=Mass of Can=22.40g

Now,

weight of wet soil W4=W₁-W₃=52.20-22.40=29.8g

weight of dry soil W₅=W₂-W₃=41.52-22.40=19.12g

LIquid limit i.e, moisture content =(W₄-W₅)/W₅

_{=(29.80-19.12)/19.12}

_0.558

_{liquid limit i.e, Percentage of Moisture Content =56% ​​​​​}