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Compression Index Values

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telebegune

telebegune

Geotechnical
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Typical compression index values?
 
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What exactly do you mean by compression index value?Check out a soils textbook - aka Terzaghi, Peck and Mesri or Lambe and Whitman.
[cheers]
 
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The compression index is estimated by several standard equations. The first is from Terzaghi 0.009(LL-10). The NRCS laboratories developed a good estimate from this equation: Cc = sqrt[0.0032 x LL x (e0-0.4)]. For instance, given a soil with a LL value of 42 and an intial void ratio of 0.76, you would estimate a compression index value of 0.23.
 
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