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Contaminated dredged material: building material of the future? An investigation into building mounds of dredged material in the Netherlands
Bernardini, P.; van Duijvenbode, J.D. (2005). Contaminated dredged material: building material of the future? An investigation into building mounds of dredged material in the Netherlands. Terra et Aqua (99): 15-21
In: Terra et Aqua: International Journal on Public Works, Ports and Waterways Developments. International Association of Dredging Companies (IADC): The Hague. ISSN 0376-6411, more
Peer reviewed article  

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Keywords
    Construction materials; Dredge spoil; Mounds; Netherlands [Marine Regions]; Marine

Authors  Top 
  • Bernardini, P.
  • van Duijvenbode, J.D.

Abstract
    The Dutch Department of Water Management (Rijkswaterstaat) is developing an innovative concept: building mounds ( terpen) of dredged material. Terpenor mounds were common in Holland centuries ago: man-made mounds a few metres high that were placed as a protection against the sea. Climate change, rising sea levels, and falling land levels mean that The Netherlands is still challenged to keep the country safe and dry. In addition modern water management and water safety must ensure that waterways are deep enough to keep the functionality (shipping, discharge of rain water) of the water systems intact. Maintenance through the removal of dredged sediment from ports, canals, and rivers is an ongoing necessity, with millions of cubic metres of often contaminated dredged sediment being removed annually. For this reason, the traditional “mound solution” may be ready to make a come back. Modern mounds made of (contaminated) dredged material create a beneficial use: on the one hand, mounds offer protection against flooding and, on the other, they provide a final destination for dredged material which allows dredging to be continued. At the initiative of the Dutch Department of Water Management several activities are in progress to involve stakeholders, and competitions have been organised to find possible placement sights for the mounds. The article describes the competitions conducted and the studies which have been done to develop the concept.

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