Question
Asked Feb 5, 2020
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3. Dry soil is mixed with water and compacted to produce a cylindrical sample (diameter
= 38 mm, length = 76 mm) with a water content of 16.0 %. Air occupies 6 % of the
total volume of the compacted sample. The specific gravity of soil solids is 2.71.
Complete the phase diagram.
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3. Dry soil is mixed with water and compacted to produce a cylindrical sample (diameter = 38 mm, length = 76 mm) with a water content of 16.0 %. Air occupies 6 % of the total volume of the compacted sample. The specific gravity of soil solids is 2.71. Complete the phase diagram.

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Expert Answer

Step 1

Given data:

Diameter of the cylindrical sample = 38 mm

Length of the cylindrical sample = 76 mm

Water content = 16%

Air content = 6%

Specific gravity of soil (G) = 2.71

Step 2

Calculate the Total volume (V):

Civil Engineering homework question answer, step 2, image 1

Step 3

Calculate mass of solid (Ms):

Water content = 16%

Let M is the total mass of the soil

M = Ms + Mw

Mass of air is negligible, so it is neglected

Civil Engineering homework question answer, step 3, image 1

Civil Engineering homework question answer, step 3, image 2

Civil Engineering homework question answer, step 3, image 3

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