Estimate of optimum water content for compaction test

[agus72indo]

Dear all,
Would anyone inform me how I can estimate the optimum water content of a soil for compaction test from its plastic limit and liquid limit. I had ever done the test long time ago when I was in undergrad school. However, I only knew that the optimum water content was estimated from its LL and PL.
Thanks for your attention.

Regards
Agus

 

[Abedkayrouz]

hi,
You can find the approximate optimum moisture content OMC of a soill for use in the compaction test from Johnson and sallberg (1962) p 125, or Engineering properties of soils and their measurement by Joseph E. Bowles. in compaction test procedure