Observations and Calculations
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Determination of Liquid Limit

Test No.
1
2
3
4
5
No. of blows          
Can No.          
Mass of can (g)          
Mass of can + wet.soil, (g)          
Mass of can + dry soil, (g)          
Mass of water (g)          
Mass of dry soil (g)          
Water content (%)          

Calculate the water contents, and plot the number of blows (on log scale) versus the water content (on ordinary scale). Draw the best-fit straight line through the points.

Liquid Limit = Water content corresponding to 25 blows

 

Determination of Plastic Limit

Test No.
1
2
3
4
5
Can No.          
Mass of can (g)          
Mass of can + wet soil, (g)          
Mass of can + dry soil, (g)          
Mass of water (g)          
Mass of dry soil (g)          
Water content (%)          

Plastic Limit = Average of the computed water contents


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