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Consolidation behavior and elastic wave characteristics of lime-treated dredged mud with vacuum preloading
Recent advances in the preloading technologies and detection technologies used to measure different soil properties (e.g., settlement, drainage, shear strength, elastic wave velocity, and degree of consolidation) have provided a new opportunity to refine and improve soil treatment methods. In this study, a series of tests were conducted using a remolded dredged slurry sample containing different lime contents (0%, 2%, 4%, and 8%) and a modified vacuum preloading device with a porometer, bending element, and tactile pressure sensor. The consolidation behavior of samples with and without lime was determined. The effects of different lime contents on the consolidation properties were studied for the whole samples and at different depths. The optimum lime content of the dredged slurry sample under vacuum preloading conditions was determined by comparing the consolidation efficiencies (CEs). In addition, a one-dimensional surcharge preloading experiment was conducted on dredged slurry samples under incremental preloading (0–100 kPa, 100–200 kPa, and 200–400 kPa). Even though numerous soil consolidation properties differed according to preloading conditions, the optimum lime content based on the consolidation efficiency (CE) was consistently found to be 4%.
Consolidation behavior and elastic wave characteristics of lime-treated dredged mud with vacuum preloading
Recent advances in the preloading technologies and detection technologies used to measure different soil properties (e.g., settlement, drainage, shear strength, elastic wave velocity, and degree of consolidation) have provided a new opportunity to refine and improve soil treatment methods. In this study, a series of tests were conducted using a remolded dredged slurry sample containing different lime contents (0%, 2%, 4%, and 8%) and a modified vacuum preloading device with a porometer, bending element, and tactile pressure sensor. The consolidation behavior of samples with and without lime was determined. The effects of different lime contents on the consolidation properties were studied for the whole samples and at different depths. The optimum lime content of the dredged slurry sample under vacuum preloading conditions was determined by comparing the consolidation efficiencies (CEs). In addition, a one-dimensional surcharge preloading experiment was conducted on dredged slurry samples under incremental preloading (0–100 kPa, 100–200 kPa, and 200–400 kPa). Even though numerous soil consolidation properties differed according to preloading conditions, the optimum lime content based on the consolidation efficiency (CE) was consistently found to be 4%.
Consolidation behavior and elastic wave characteristics of lime-treated dredged mud with vacuum preloading
Jin, Quanbin (author) / Li, Yubo (author) / Li, Bo (author)
Marine Georesources & Geotechnology ; 39 ; 140-149
2021-02-01
10 pages
Article (Journal)
Electronic Resource
English
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