Civil Engineering MCQAE Level Civil Engineering
The coefficient of volume change m_v is related to the coefficient of compressibility a_v as:
Soil MechanicsCoefficient of Volume ChangeMEDIUM
Choose the correct answer
A
m_v = a_v × (1 + e₀)
B
m_v = a_v / (1 + e₀)
C
m_v = a_v × e₀
D
m_v = 1/a_v
Correct Answer
B. m_v = a_v / (1 + e₀)
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m_v = a_v / (1 + e₀), where a_v = -de/dσ' (compressibility) and e₀ = initial void ratio. m_v represents volume change per unit volume per unit stress change. It is used in consolidation settlement calculations: ΔH = m_v × Δσ' × H.
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