Abstract:

In order to compact the lime-stabilized high water content sludge, 4 different compaction types, having different compactive impulses, were designed by improving the corresponding compaction testing standards and testing instrument. The compaction test was conducted on the lime-stabilized high water content sludge with different lime contents and compaction delay times. By analyzing the relationship between the compactive impulse, the compactive effort and the dry unit weight of soil, a new compaction method fitting to the lime-stabilized high water content sludge was presented; and it was illustrated that choice the compaction method with proper compactive impulse according to the water content ratio ( ) of lime-stabilized sludge and judge whether densification by the change law of the dry unit weight and compaction blows. Based on the engineering practice, the unconfined compressive strength of lime-stabilized sludge at different curing periods was tested; the feasibility of the lime-stabilized high water content sludge used as the fill material of engineering was discussed preliminarily.

Key words: sludge, fill material, compaction method, dry unit weight, unconfined compressive strength