United States Department of Transportation
i
Evaluation of Long-Term Performance of Stabilized Sediment for Beneficial Use
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2020-08-01
[PDF-1.16 MB]
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Edition:Final Report July, 2018 to September 2019
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Abstract:Over the past twenty years, the state of New Jersey has accepted over 30 million cubic yards of material that have many practical uses. This study was conducted to develop a methodology based on existing studies, reviewing records, and visiting field sites. A total of 6 sites in NJ where stabilized dredged materials (SDM) had been used to augment and/or replace borrowed materials – “beneficial-use applications” were identified for inclusion in this study. Each site had different types of soil, waste, pollution (organic and inorganic), and employed different binder and remediation systems. The data revealed no evidence of chemical releases at any of the sites, probably because these sites were capped or filled with SDM. In addition, the geotechnical requirements of the material were generally met. The only exception took place at the National Lead site, most likely due to the initial mixing during stabilization. Based on the six sites that were studied, we conclude that SDM does not break down or fail to maintain its design function. Further investigation of this material should include laboratory studies that use an accelerated testing regime to determine what conditions could result in material failure.
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