the role of suction in the performance of clay fill
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The Role of Suction in the Performance of Clay Fill Reed Engineering Group Ronald F. Reed, P.E. Kundan K. Pandey, P.E. Introduction Brief History (Studies by Proctor) What we will look at: Moisture ~ Density Moisture ~


  1. The Role of Suction in the Performance of Clay Fill Reed Engineering Group Ronald F. Reed, P.E. Kundan K. Pandey, P.E.

  2. Introduction • Brief History (Studies by Proctor) • What we will look at: – Moisture ~ Density – Moisture ~ Suction – Moisture ~ Stiffness • Case History

  3. Proctor studied moisture-density and moisture-penetrometer relationships in the 1930s.

  4. Penetrometer on Steroids

  5. Moisture Density/Volume of Voids (Proctor.)

  6. Similar Results for dry.

  7. 95%

  8. Application

  9. Moisture Variation Moisture Content 11 13 15 17 19 21 23 25 27 0 Borings in areas not collapsed 2 4 6 Boring in area of collapse 8 Depth 10 12 14 Field Density Tests 16 18 20

  10. Conclusions • Materials compacted to equal % density, dry or wet of optimum have equal ratios. • A pocket penetrometer used in conjunction with density tests can be used to confirm results.

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