Question

zimum three questions.
Oven dried soil is not used for liquid limit determination. Justify it.​

Answer 1

Explanation:

Calculate the liquid limit from only one soil sample test by dividing the number of blows by 25, raising the result to the power of 0.121 and multiplying by the percent water content.

Answer 2

Answer:

This test is done to determine the liquid limit of soil as per IS: 2720 (Part 5) – 1985. The liquid limit of fine-grained soil is the water content at which soil behaves practically like a liquid, but has small shear

strength. It’s flow closes the groove in just 25 blows in Casagrande’s liquid limit device. The apparatus used :-

i) Casagrande’s liquid limit device

ii) Grooving tools of both standard and ASTM types

iii) Oven

iv) Evaporating dish

v) Spatula

vi) IS Sieve of size 425µm

vii) Weighing balance, with 0.01g accuracy

viii) Wash bottle

ix) Air-tight and non-corrodible container for determination of moisture content.Procedure to Determine The Liquid Limit Of Soil

i) Place a portion of the paste in the cup of the liquid limit device.

ii) Level the mix so as to have a maximum depth of 1cm.

Explanation:

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