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Questions and Answers
Resilient Modulus is a measure of soil stiffness under cyclic loading and is not related to poison n
False
Compaction guidelines recommend compacting all fill areas below 300 mm to 95% standard proctor density.
False
Mechanical stabilization of soil includes methods like blending, chemical stabilization, and geosynthetics.
True
In the compaction guidelines, for fine-grained soils, the top 300 mm should be re-compacted to 95% of standard proctor density.
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For coarse-grained soils with plasticity index ≤ 6, the top 300 mm should be re-compacted to 100% of standard proctor density.
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Mechanical stabilization through blending involves mixing other soils with the target soil to change its chemical properties.
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Lime treatment of subgrade soils is generally recommended for hard, dry, sandy soils.
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The objective of lime treatment of subgrade soils is to decrease the thickness of the pavement structure.
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Mechanical stabilization techniques include compaction and chemical blending.
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Adding hydrated lime to soil can decrease plasticity, improve compaction, and increase strength by enhancing attractive forces between clay particles.
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