Journal
CANADIAN GEOTECHNICAL JOURNAL
Volume 39, Issue 6, Pages 1341-1357Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/T02-100
Keywords
compaction; unsaturated soils; clays; drying; wetting; Proctor conditions
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A relatively large number of drying and wetting tests have been performed on clayey soils compacted at the standard or modified Proctor optimum water content and maximum density and compared with tests on normally consolidated or overconsolidated soils. The results show that drying and wetting paths on compacted soils are fairly linear and reversible in the void ratio or water content versus negative pore-water pressure planes. On the wet side of the optimum, the wetting paths are independent of the compaction water content and can be approached by compaction tests with measurement of the negative pore-water pressure. Correlations have been established between the liquid limit of the soils and such properties as the optimum water content and negative pore-water pressure, the maximum dry density, and the swelling or drying index. Although based on a limited number of tests, these correlations provide a fairly good basis to model the drying-wetting paths when all the necessary data are not available.
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