Question:
During CBR test, the load sustained by a re-moulded soil specimen at \(5\,\mathrm{mm}\) penetration is \(50\,\mathrm{kg}\). The CBR value of the soil will be
During CBR test, the load sustained by a re-moulded soil specimen at \(5\,\mathrm{mm}\) penetration is \(50\,\mathrm{kg}\). The CBR value of the soil will be
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Standard CBR loads:
\[
\boxed{
\begin{aligned}
2.5~\mathrm{mm} &: 1370~\mathrm{kg}\\
5~\mathrm{mm} &: 2055~\mathrm{kg}
\end{aligned}
}
\]
Updated On: Jul 23, 2026
- \(10\%\)
- \(5\%\)
- \(3.6\%\)
- \(2.4\%\)
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The Correct Option is D
Solution and Explanation
Step 1: Use the CBR formula.
\[
\mathrm{CBR}
=
\frac{\text{Test Load}}{\text{Standard Load}}
\times100
\]
At \(5\,\mathrm{mm}\) penetration,
\[
\text{Standard Load}=2055~\mathrm{kg}.
\]
Step 2: Substitute the values. \[ \mathrm{CBR} = \frac{50}{2055}\times100 = 2.43\% \approx 2.4\%. \] Hence, \[ \boxed{(D)} \] is the correct answer.
Step 2: Substitute the values. \[ \mathrm{CBR} = \frac{50}{2055}\times100 = 2.43\% \approx 2.4\%. \] Hence, \[ \boxed{(D)} \] is the correct answer.
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