Q. The volumetric strain per unit increase in effective stress of soil is defined as

A
Compression index
B
Volume compressibility
C
Coefficient of compressibility
D
Consolidation
Solution:
  • The volumetric strain per unit increase in effective stress of soil is defined as volume compressibility .
  • The compression curve is plotted for effective stress versus void ratio. The void ratio is plotted using normal scale and effective stress is plotted using logarithm scale.
  • The slope taken from virgin compression curve is termed as compression index.
  • Coefficient of compressibility – the decrease in volume per unit volume (as of a gas) produced by a unit change in pressure.
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