Soil Mechanics and Foundation
Coefficient of consolidation for clays normally

increases with increase in liquid limit
remains constant at all liquid limits
decreases with increase in liquid limit
first increases and then decreases with increase in liquid limit

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Soil Mechanics and Foundation
With the increase in the amount of compaction energy

optimum water content increases but maximum dry density decreases
optimum water content decreases but maximum dry density increases
both optimum water content and maximum dry density decrease[ES 93]
both optimum water content and maximum dry density increase

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