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?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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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?
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