Integrated geogrid mattress armouring system for capping of contaminated dredge materials

Document Type

Conference Proceeding

Date of Original Version



Disposal of highly toxic dredge material in offshore sites requires capping of the dredge mound to insure permanent isolation of the contaminants from the overlying waters. In areas of high energy hydrodynamic conditions, especially where there is potential for major storm events to occur, sediment caps may be eroded and the contaminated materials exposed. It is proposed that prefabricated geogrid mattresses be used as an armouring layer over the contaminated material to assure long-term stability and containment of the mound materials. An example design for a region of known intermittent wave activity is presented including fabrication, transport, placement, and monitoring of the armouring system.

Publication Title

Ports - Proceedings



This document is currently not available here.