Answered: A proctor compaction test was conducted…

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Compaction

Section: Chapter Questions

Problem 5.7P

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Question

A proctor compaction test was conducted on a soil sample, and the following observations were
made:
Water content, percent 7.7 11.5 14.6 17.5 19.7 21.2
Mass of wet soil, g 1739 1919 2081 2033 1986 1948

1. determine the wet density in g/cm3
2. determine the dry density in g/cm3
3. determine the dry unit weight in kN/m3
4. construct the compaction curve
5. determine the optimum moisture content in percent
6. determine the maximum dry density in kN/m3

7. construct the 80% and 100% saturation lines using w% = 8, 12, 16, 20, and 24
8. calculate the saturation for the maximum dry density (ϒdmax in kN/m3) and the optimummoisture content (wopt %)

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