Utilization of sediments dredged from marine ports as a principal component of composite material

Mymrin, Vsévolod; Stella, Jacqueline C.; Scremim, Cristofer Bernardi; Pan, Roberto C.Y.; Sanches, Filipe G.; Alekseev, Kirill; Pedroso, Daniela E.; Molinetti, Andrea; Fortini, Otavio

doi:10.1016/j.jclepro.2016.10.035

Cited by 60 publications

(22 citation statements)

References 8 publications

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“…Using 50% to 60% of mass of sediments dredged from sea, bricks of composite material were produced in a study for Brazilian seaports (Mymrin et al, 2017) [7]. The composite blocks met the stipulated Brazilian norms for the conventional bricks.…”

Section: Sediments For Brick Productionmentioning

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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Section: Sediments For Brick Productionmentioning

confidence: 99%

Disposal of Sediments for Sustainability: A Review

Dauji¹

2017

IJEEE

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“…The sludge deposited in waterways such as urban ditches, rivers, lakes and seas, hinders navigation, worsens water quality and thus requires regular dredging [1]. Dredged sludge exposed to the atmosphere in yards produces pollution to the surrounding water and soil, occupies a large amount of land resources, and raises dredging project cost at the same time [2][3][4][5][6][7][8]. Solidification/Stabilization (S/S) technology through cement and other solidification agents, transfers dredged sludge into engineering fillers (S/S sludge), so as to promote the large-scale utilization of dredged sludge, which has many social and economic values, such as environmental protection, cost saving and so on.…”

Section: Introductionmentioning

confidence: 99%

Solidification of High Organic Matter Content Sludge by Cement, Lime and Metakaolin

Ke¹,

Wang

Tan³

et al. 2018

Period. Polytech. Civil Eng.

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Based on orthogonal experimental design, the key solidification controlling technology of Solidified/Stabilized (S/S) sludge with high total organic content (TOC) by cement, lime and metakaolin was explored by macroscopic tests, chemical components measurements and microscopic analysis. The macroscopic tests show that, the permeability coefficient is mainly affected by initial water content and lime content, and the unconfined compression strength is mainly affected by cement content and lime content. The chemical components measurements show that, the solidification effect of S/S sludge with high TOC is controlled by organic matter consumption, and organic matter consumption is determined by the alkaline environment from the cement and lime hydration reactions, which is mainly affect by the initial water content and lime-metakaolin content ratio. The microscopic analysis results show that, lime consumes parts of organic matter while excess lime produces weak Ca(OH)2 crystal fluffy sheet structure, matakaolin produces pozzolanic reactions with cement and lime instead of soil particles, and consumes the weak Ca(OH)2 crystal fluffy sheet structure produced by superfluous lime. The research has confirmed key controlling points of S/S sludge in case of high TOC, which will provide theoretical guidance and technical support for S/S sludge promotion with high TOC.

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“…Dredged sediment has different properties depending on the source. Sediments from seaports contain majority of sandy particles [1]; dam sediment contains greater amount of silty particles [2]; harbour sediment contains more of clayey particles [3]; lagoon sediment contains predominance of clayey particles [4] and others. Properties of sediment may vary across the locations.…”

Section: Introductionmentioning

confidence: 99%

A Review on Characterization of Sediments for Green Bricks Production

Ean¹,

Malek²,

Mohammed

et al. 2018

IJET

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Accumulation of dredged sediment has raised environmental concern in various countries. Recycling of sediment into bricks is a viable solution to the environmental pollution. Concerning to the utilization of sediment in bricks, this study reviews the needs of characterization on sediment and methods of producing sediment bricks. Particle size distribution was found to be the key criteria for characterization of sediment. Sizes of particles determined the function of the sediments in the bricks. In spite of that, leachability of heavy metals is another important aspect for contaminated sediment. Cementing bricks used cementing materials as the stabilization agent to the heavy metals. It is necessary to conduct leaching test for the end-product of the sediment to ensure the heavy metals leached are within the regulatory limits. In conclusion, method of producing sediment bricks may vary due to the various characteristics of sediment for a promising environmental friendly production.

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Utilization of sediments dredged from marine ports as a principal component of composite material

Cited by 60 publications

References 8 publications

Disposal of Sediments for Sustainability: A Review

Disposal of Sediments for Sustainability: A Review

Solidification of High Organic Matter Content Sludge by Cement, Lime and Metakaolin

A Review on Characterization of Sediments for Green Bricks Production

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