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Evaluation of Phosphatic Clay Disposal and Reclamation Methods. Volume 4: Consolidation Behavior of Phosphatic Clays

02-002-008Final

Abstract

The consolidation behavior of seven phosphatic clays was investigated via six slurry consolidation tests, seven conventional consolidation tests and two constant rate of strain consolidation tests. Highly plastic phosphatic clays displayed a higher void ratio, lower solids content, and greater compressibility at the same effective stress than clays of lower plasticity. The coefficient of permeability of phosphatic clays generally conformed to expected behavior with the higher plasticity clays displaying a lower coefficient of consolidation and plasticity was evident. Both the total void ratio and the compressibility at a given effective stress are decreased by addition of sand to the clay.

Evaluation of Phosphatic Clay Disposal and Reclamation Methods.
Other Volumes.

FIPR Publication No. 02-002-003
Volume 1: Index Properties of Phosphatic Clays.

FIPR Publication No. 02-002-004
Volume 2: Mineralogy of Phosphatic Clays.

FIPR Publication No. 02-002-005
Volume 3: Sedimentation Behavior of Phosphatic Clays.

FIPR Publication No. 02-002-023
Volume 5: Shear Strength Characteristics of Phosphatic Clays.

FIPR Publication No. 02-002-024
Volume 6: Predictive Methodology for Evaluating Disposal Methods.

FIPR Publication No. 02-042-044
Volume 7: Engineering Properties of Flocculated Phosphatic Clays.

FIPR Publication No. 02-073-097
Volume 8: Predictive Methodology Applied to Case Histories.