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10:00 a.m.
1179 Glenn Martin Hall, Main CEE Conference Room
For More Information:
Heather Stewart
301 405 4195
ceegradstudies@umd.edu
Announcement: M.S. Thesis Defense
Name: Atul Singh
Committee:
Dr. Ahmet H Aydilek, Chair
Dr. Mohamed S Aggour
Dr. Dimitrios Goulias
Date/Time: Monday, May 14, 2018 at 10 a.m.
Location: 1179 Glenn Martin Hall, CEE Main Conference Room
Title: QUARRY FINES-AMENDED CHESAPEAKE BAY DREDGED SEDIMENTS AS
POTENTIAL HIGHWAY EMBANKMENT MATERIALS
Abstract:
Several hundred million cubic yards of sediment are dredged
from various U.S. ports, harbors, and waterways annually to maintain
and improve the nation’s navigation system for commercial, national
defense, and recreational purposes. The Maryland Port Administration has major challenges in maintaining long-term disposal capacity for dredged material in its confined disposal facilities. The majority of the dredged materials in these facilities typically classifies as ML and MH soils, which are commonly recognized as being among the poorest earthwork construction materials. The current study aims to explore the use of sediments
dredged from Chesapeake Bay as potential highway embankment materials by amending them with quarry by-products. Geotechnical analysis is coupled with an environmental assessment to ensure satisfactory performance of the dredged materials as an embankment fill material. The compaction and shear properties of the dredged sediments improved upon blending with the quarry by-products. The concentrations of all metals released during the batch leach tests from the treated dredged materials were below the water quality limits. Column leach tests yielded generally low or non-detectable metal concentrations. The results of the geochemical modeling indicated that the leaching of the
analyzed metals was solubility-controlled. The overall findings showed that Chesapeake Bay dredged sediments can be beneficially reused following a treatment with quarry by-products.
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