A sand cone test has been performed in a recently compacted fill. The test results were as follows: Initial weight of sand cone + sand  = 6.14 kg                 Moisture Content Test: Final weight of sand cone + sand = 1.94 kg                    Mass of empty moisture can = 23.11 g Weight of sand to fill cone = 0.96 kg                                 Mass of moist soil + can = 273.93 g Weight of soil from hole + bucket = 5.65 kg                  Mass of dry soil + can = 250.10 g Weight of bucket = 0.55 kg The sand used on the sand cone had a unit weight of 12.75 kN/m3 and the fill had a maximum dry unit weight of 19.04 kN/m3 and an optimum moisture content of 11.7 % a. Compute the volume of hole  b. Compute the dry unit weight of soil.  c. Compute the relative compaction.

Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter6: Soil Compaction
Section: Chapter Questions
Problem 6.7P
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A sand cone test has been performed in a recently compacted fill. The test results were as follows:

Initial weight of sand cone + sand  = 6.14 kg                 Moisture Content Test:

Final weight of sand cone + sand = 1.94 kg                    Mass of empty moisture can = 23.11 g

Weight of sand to fill cone = 0.96 kg                                 Mass of moist soil + can = 273.93 g

Weight of soil from hole + bucket = 5.65 kg                  Mass of dry soil + can = 250.10 g

Weight of bucket = 0.55 kg

The sand used on the sand cone had a unit weight of 12.75 kN/m3 and the fill had a maximum dry unit weight of 19.04 kN/m3 and an optimum moisture content of 11.7 %

a. Compute the volume of hole 

b. Compute the dry unit weight of soil. 

c. Compute the relative compaction. 

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