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Examination of a New Remedial Technology for Capping Contaminated Sediments: Large‐Scale Laboratory Evaluation of Sediment Mixing and Cap Resistance to Erosive Forces
Author(s) -
Hull John H.,
Jersak Joseph M.,
McDonald Blair J.
Publication year - 1998
Publication title -
remediation journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.762
H-Index - 27
eISSN - 1520-6831
pISSN - 1051-5658
DOI - 10.1002/rem.3440080305
Subject(s) - flume , sediment , aggregate (composite) , settling , fluvial , geotechnical engineering , environmental science , geology , environmental engineering , materials science , composite material , geomorphology , flow (mathematics) , geometry , mathematics , structural basin
The potential effectiveness of a new composite‐aggregate capping technology, AquaBlok TM —in physically isolating contaminated, fine‐grained sediments derived from an Ohio, Lake Erie tributary—was evaluated in the laboratory. In particular, large‐scale settling‐column studies were conducted to determine the degree to which composite‐aggregate material penetrates into and/or mixes with the sediment, perhaps affecting the degree to which sediment could be physically isolated through capping. Additionally, large‐scale flume studies were conducted to determine resistance of the composite‐aggregate material to significant and long‐term, fluvial‐like erosive forces; the resistance of other potential capping materials was also evaluated for comparison. Experimental results indicate that the composite‐aggregate material effectively isolates sediment through the formation of a continuous and relatively erosion‐resistant, hydrated capping layer atop the sediments.