Abstract
The Shimajiri mudstone (silty clays) is widely distributed in the southern and central parts of Okinawa Island. The Shimajiri Formation, mostly of the Shimajiri mudstone, is marine deposit of Miocene-Pliocene epoch. The present paper deals with the results of experimental studies on the stabilized soils for the effects on CBR mainly. Discussions are made on the test results comparing with those materials; (1) the natural clays passing through square opening of 38.1mm, (2) the clay-cement mixtures and (3) the clay-hydrated lime mixtures. It is clarified that the stabilization effectiveness is closely related to the mixing water content, the additive content, and the curing time.
