Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

Dredged marine sand as construction material

Dredging works are usually required to maintenance activities in many ports all over the world and represents a huge volume of disposal material. The use of dredged aggregates can be considered in several applications as erosive process control, coastal stabilization, beach replenishment, production of construction materials (clay, bricks, aggregates) or construction works (foundation fill, dik...

Sediment Recycling: Marsh Renourishment Through Dredged Material Disposal

Recycling of harbor sediment as lightweight aggregate.

Sediment sampled from Taichung Harbor was mixed with local reservoir sediment at different weight ratios to prepare lightweight aggregate at 1050, 1100, and 1150 degrees C. A pressure of 3000 or 5000 psi was used to shape the powder mixtures into pellets before the heating processes. The results indicate that the leaching levels of trace metals from the lightweight aggregate samples are conside...

Dredged Material Disposal Economics

Recent difficulties in siting dredged material disposal facilities are increasing interests in alternative disposal or reuse of dredged material and the possible adverse consequences of any increases in the generation of dredged materials. This paper focuses on economic aspects of these issues. Simple methods are suggested for evaluating the economics of increasing or decreasing the rate of dis...

Decontamination and Beneficial Reuse of Dredged Material Using Existing Infrastructure for the Manufacture of Lightweight Aggregate

JCI/UPCYCLE Associates' technological and commercial approach focuses on the utilization of dredged material as a feedstock in the manufacture of a value added building material, lightweight aggregate (LWA). Our approach, based on proven unit operations, is capable of yielding an "upcycled" product with a demonstrated market demand. Key to the success of the approach is the incorporation of exi...