Abstract
The subject of collapsibility has been, perhaps necessarily, approached from individual disciplines. One of the methods to identify the potential of collapsible soil is the double consolidation test. In this research, the sample used is "Shirasu", volcanic sandy soil with air-dry water content. The wetting was performed in many states to the samples by using static compaction as taking into consideration in term of the potential of collapsibility and the soil mechanism by the effects of stress history and soaking pressure. The soaking pressure is significant effective to the collapse potential when the soaking pressure beyond the preloading pressure.
