Question
Download Solution PDFWhich type of soil is commonly used for the core of an embankment to minimise seepage?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Clay:
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Clay is commonly used for the core of embankments because it has very low permeability, which helps minimize seepage.
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The fine particles in clay make it highly effective at reducing the movement of water, making it ideal for controlling seepage in embankment dams.
Additional Information Sand:
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Sand has relatively high permeability, which makes it unsuitable for the core of an embankment where seepage control is critical.
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It would allow water to pass through more easily, undermining the stability of the embankment.
Silty Sand:
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Silty sand has a higher permeability than clay, though not as much as pure sand.
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It may still allow some seepage, making it less ideal for minimizing water movement compared to clay.
Gravel:
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Gravel has very high permeability, allowing significant water flow.
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It is typically used in the outer layers or drainage zones of embankments but not in the core, where seepage control is essential.
Last updated on Jun 7, 2025
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