Unconfined Compression Strength of Lime-stabilized Soil used for Backfill Material of Buried Flexible Model Pipe with Wet-Dry Condition Simulation

摘要

An idea of using lime-stabilized soil as the backfill material in a model test of flexible buried pipe is going to be implemented.Determination of lime-stabilized soil strength needs to be done for a preliminary stage of the model test. In order to simulatethe field condition with wet-dry cycle state, lime-stabilized soil mixed in the field was transported to the laboratory, dividedinto three water content condition (i.e. 15%, 23% and 28%), compacted to achieve 90% relative dry density condition, curedfor up to 8 days, and then being subjected to unconfined compression tests. In this particular relatively short time periodobservation, the water content seems to be a major concern in the determination of the unconfined compression strength, whilethe strength seems to be constant day by day during the curing period.