a fill soil with a natural moisture content of 10% and an optimum moisture content of 14% is being used to construct a compacted fill. The contractor is placing this soil in 400 mm lifts, spraying the top with a water truck, and compacting it using a towed sheepsfoot roller. A soils technician has performed a series of field density tests in this fill and has found relative compaction values between 80 and 92%. The measured moisture contents ranged from 1Oto 23%. The specifications require a relative compaction of at least 90%, so the fill is not acceptable. What is wrong with the contractor's methods, and what needs to be done to remedy the problem?

a fill soil with a natural moisture content of 10% and an optimum moisture content of 14% is being used to construct a compacted fill. The contractor is placing this soil in 400 mm lifts, spraying the top with a water truck, and compacting it using a towed sheepsfoot roller. A soils technician has performed a series of field density tests in this fill and has found relative compaction values between 80 and 92%. The measured moisture contents ranged from 1Oto 23%. The specifications require a relative compaction of at least 90%, so the fill is not acceptable. What is wrong with the contractor's methods, and what needs to be done to remedy the problem?

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 5.16P

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