Abstract
Compression curve after inundation represents one of foundamental characteristics for unsaturated soils. Many constitutive models for unsaturated soils contain it as an important parameter. In this paper, we studied the compression curve for compacted silty clay specimen in soaking test with oedmeter test apparatus. From the test results, we found that the compression curve obtained was different from the compression curve for slurry specimen, and that in some case, compaction effort affect on the compression indexes for compacted specimen. These results mean that the compression curve after inundation is essentially different from that for slurry specimen of the same sample.