Dredged sediments valorisation in compressed earth blocks: Suction and water content effect on their mechanical properties

Serbah, Boumediene; Abou-Bekr, Nabil; Bouchemella, Salima; Eid, Joanna; Taïbi, Saïd

doi:10.1016/j.conbuildmat.2017.10.043

Cited by 32 publications

(18 citation statements)

References 25 publications

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“…In general, characterization of sediments emphasized on the heavy metals assessment and organic pollution [24,27,28,[58][59][60][61][62][63]. Nevertheless, particle size distribution of the sediments is the significant characteristic and certainly an important criterion for utilization of sediment in brick production [2], with heavy metals assessment that focused on the leachability of the heavy metals [17].…”

Section: Discussionmentioning

confidence: 99%

“…Fired clay bricks mainly favor to kaolinite (clay) and high plasticity sediments while medium to low plasticity or high silica content (sand or silt) sediments are preferable for compressed bricks with addition of other pozzolonic materials as the binding agent. Presence of clay is required in compressed bricks as natural binder, however excessive amount of clay would cause shrinkage [2]. The trend of using sediment in cementing/ non-sintered bricks started on 2014 [57].…”

Section: Discussionmentioning

confidence: 99%

“…al. [2] amended the highly plastic silt sediments from Bakhada water dam in western Algeria with 30% of natural sand to produce compressed earth blocks by using modified optimum proctor with increasing compacting energy by 25 blows. It was found that decreasing water content at about 11% showed increased in unconfined compressive strength by three times.…”

Section: Sediments In Unfired Bricksmentioning

confidence: 99%

“…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%

“…Properties of sediment may vary across the locations. Unlike silty sediment from Bakhada dam in western Algeria [2], Shihmen dam in Taiwan has predominantly clayey particles [5]. Differences in the physical and chemical properties of sediment and some that were contaminated with heavy metals emerged to the needs of adding other waste or raw materials such as gypsum [6], steelmanufacturing slag [7], clay [8] and others [9,10] in order to produce safe construction materials such as bricks [11].…”

Section: Introductionmentioning

confidence: 99%

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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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