Environmental impact of the use of contaminated sediments as partial replacement of the aggregate used in road construction

Pinto, Patricio X.; Al-Abed, Souhail R.; Barth, Edwin F.; Loftspring, Catherine; Voit, James; Clark, Patrick J.; Ioannides, Anastasios M.

doi:10.1016/j.jhazmat.2011.02.074

Cited by 22 publications

(11 citation statements)

References 27 publications

(29 reference statements)

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“…Recent studies have attempted to recycle the dredged sediments for construction of road foundation or base layers after cementbased stabilization/solidification [10][11][12]. However, it was shown that high contents of clay, organic matter, and soluble salts in the marine sediments delayed the setting/hardening processes and weakened the mechanical strength [13,14].…”

Section: Introductionmentioning

confidence: 99%

Mixture design and treatment methods for recycling contaminated sediment

Wang

Kwok

Tsang

et al. 2015

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Mixture design and treatment methods for recycling contaminated sediment

Wang

Kwok

Tsang

et al. 2015

Journal of Hazardous Materials

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“…Therefore, even though the sediments are strongly buffered, it is necessary to prevent all risk of leaching of the pollutants they contain by other mechanisms such as ORP modification, or by percolation of a chelating agent (Bäckström et al, 2004;Mayer et al, 2008). A treatment could be envisaged, even valorization, for example in a road building material, or in civil engineering by treatment with hydraulic binders (Paria and Yuet, 2006;Pinto et al, 2011;Wang et al, 2012;Couvidat et al, 2016a;Bao et al, 2016;Saussaye et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Characterization of how contaminants arise in a dredged marine sediment and analysis of the effect of natural weathering

Couvidat

Chatain

Bouzahzah

et al. 2018

Science of The Total Environment

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Millions of tons of contaminated sediments are dredged each year from the main harbors in France. When removed from water, these sediments are very reactive, therefore their geochemical behavior must be understood in order to avoid dispersion of contaminated lixiviates in the surrounding soils. In this objective, it is necessary to evaluate the principal physicochemical parameters, and also achieve advanced mineralogical characterization. These studied sediments are highly contaminated by metals, notably copper (1445 and 835mg/kg, in the unweathered and naturally-weathered sediments, respectively), lead (760 and 1260mg/kg, respectively), zinc (2085 and 2550mg/kg, respectively), as well as by organic contaminants (PAH, PCB) and organometallics (organotins). A high concentration of sulfide minerals was also observed both in the unweathered sediment preserved under water (3.4wt% of pyrite especially), and in the naturally weathered sediment (2wt% pyrite), and in particular framboïdal pyrite was observed in the two materials. The presence of reactive mineral species in the naturally-weathered sediment can be explained by the deposit of a protective layer, composed of sulfide and their oxidation products (sulfate and iron oxides), thus preventing oxygen from diffusing through to the sulfide minerals. Additionally, the presence of aluminosilicates aggregates coating the sulfide minerals could also explain their presence in the naturally-weathered sediment. As organic matter is one of the principal constituents of the sediments (5.8 and 6.3wt% total organic carbon in the unweathered and weathered sediment, respectively), the aggregates are probably partially constituted of refractory humic material. It therefore appears that the natural weathering has led to a significant decrease in PAHs and organotins, but not in PCBs. The evolution of the granulometric structure and the distribution of the metallic contaminants could therefore lead us to consider a treatment by size separation, and a possible valorization of the dredged sediments in civil engineering.

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“…A recent study evaluated the environmental impact of contaminated sediments when used as aggregates in hot mix asphalt for road construction (Pinto et al, 2011) [12]. The petroleum contaminated sediment from Indiana Harbor Canal (IHC) was identified as toxic and highly contaminated.…”

Section: Contaminated Sediments As Aggregatesmentioning

confidence: 99%

Disposal of Sediments for Sustainability: A Review

Dauji¹

2017

IJEEE

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In the coastal areas, dredging operations are undertaken for creation, draft enhancement and maintenance of navigable channels for port and harbor activities. Dredging may also be performed in rivers or reservoirs for similar reasons. The dredged sediments may be disposed at on-land or oceanic sites. In the recent years, inexpensive ocean dumping is being eliminated as a disposal alternative, causing a crisis in the management of sediment. In construction industry, production of concrete creates heavy demand on the supply of raw materials for cement and also aggregates for concrete. In many locations, habitat restoration and tidal flat creation also generates demand of fine aggregates. It has been observed that at several sites, supply from quarry is not always an economic and feasible option. Sustainable solution to both the aforementioned problems is re-using the sediments from river and ocean in construction industry or bio-diesel production. Various applications attempted in construction industry include those for production of cement, as fine aggregate in concrete, in construction of pavements, in production of lightweight concrete, among others. This article presents a review of approaches employed to recycle dredged sediments in construction industry and biodiesel production.

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Environmental impact of the use of contaminated sediments as partial replacement of the aggregate used in road construction

Cited by 22 publications

References 27 publications

Mixture design and treatment methods for recycling contaminated sediment

Mixture design and treatment methods for recycling contaminated sediment

Characterization of how contaminants arise in a dredged marine sediment and analysis of the effect of natural weathering

Disposal of Sediments for Sustainability: A Review

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