A new approach for determining compressibility and permeability characteristics of dredged slurries with high water content

In the vacuum treatment of dredged slurries via prefabricated vertical drains (PVDs), both filtration and consolidation may happen to when subjected gradient. Similar consolidation, provide equally useful information on interpreting constitutive behavior slurry. this paper, a new approach utilizing process is devised evaluate behaviors slurries. The composed device an iterative curve fitting algorithm. Two types tests, namely step-vacuum constant-vacuum followed by compression test, must be conducted slurry specimens, only time variations filtrate discharge should recorded. On basis recorded data, algorithm adopted for determining parameters equations. effectiveness proposed verified through comparing obtained compressibility permeability with data provided oedometer test empirical relationships from different sources. comparisons demonstrate that determined present can predict characteristics acceptable degree accuracy.