Question
Download Solution PDFA clay sample has:
- gravel = 2%,
- sand = 58%,
- fines = 40%,
- LL = 38%,
- PL = 15%,
- SL = 13% &
- natural water content = 18%.
The consistency index of the clay sample is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The Consistency Index (CI) measures the relative firmness of a soil sample with respect to its plasticity. It is calculated using the following formula:
\( CI = \frac{LL - w_n}{LL - PL} \)
Where:
- \( LL \) = Liquid Limit
- \( PL \) = Plastic Limit
- \( w_n \) = Natural water content
Given Data:
- Liquid Limit (LL) = 38%
- Plastic Limit (PL) = 15%
- Natural water content (\( w_n \)) = 18%
Substitute the values:
\( CI = \frac{38 - 18}{38 - 15} = \frac{20}{23} \approx 0.87 \)
The consistency index of the clay sample is 0.87.
Last updated on Jun 4, 2025
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