Author

Tian Hee Hoe

Advisor

Rendon-Herrero, Oswald

Committee Member

Eamon, Christopher D.

Committee Member

Warsi, Zahir U. A.

Date of Degree

1-1-2001

Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science

College

College of Engineering

Abstract

Each year in the United States, large volumes of material are dredged out of lakes and waterways and are dumped in confined disposal facilities so that they can consolidate. A mathematical model is proposed to predict the settling of the dredged material by predicting the ?primary? self-weight consolidation curve of silt particles under zone settling conditions. Using a relatively ?pure? specimen of silt, self-weight consolidation tests were performed at concentrations ranging from 10 to 200 grams per liter. To generate the predicted curve, the model requires the location of the zone interface at 180, 600, and 720 seconds and the assumed A-value. The A-value is used to ?fine-tune? the predicted curve so that it will fit the experimental curve. When values of ?A? from 0.85 to 0.95 are used, the predicted curve will fit the experimental curve for all concentrations considered. Thus, to predict the ?primary? self-weight consolidation of the dredged material, a sedimentation test using a sample of the dredged material must first be performed.

URI

https://hdl.handle.net/11668/19219

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