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Caliche is Expansive soil ?

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abds

Geotechnical
Jul 13, 2012
7
We have to backfill to 95% relative compaction using Caliche mixed soil. These caliches are poorly cemented. I am not familier about properties of Caliche soils before. I guess iit is good because it helps cementation of soils. Am i wrong about this ? IS is expansive soil ?

Does anybody help to to how to deal with these soil. Do i need completely remove the trace of Caliche or ignore it.
 
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