Assessment of the use of dredged marine materials in sanitary landfills: A case study from the Marmara sea

Çevikbilen, Gökhan; Başar, Hatice Merve; Karadoğan, Ümit; Teymür, Berrak; Dağlı, Sönmez; Tolun, Leyla

doi:10.1016/j.wasman.2020.05.044

Cited by 23 publications

(10 citation statements)

References 40 publications

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“…With the onset of the recent COVID-19 pandemic, its importance has become increasingly clear [ 63 , 64 ]. There are several modern engineered landfills, i.e., sanitary landfills, to reduce the risk evaluation of landfill hazards to conserve the public health and environment [ 7 ]. Usually, the landfills are located at a distance away from the healthcare facilities.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: A Cluster-based Stratified Hybrid Decision Support Model under Uncertainty: Sustainable Healthcare Landfill Location Selection

Tirkolaee

Torkayesh

2022

Appl Intell

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: A Cluster-based Stratified Hybrid Decision Support Model under Uncertainty: Sustainable Healthcare Landfill Location Selection

Tirkolaee

Torkayesh

2022

Appl Intell

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“…After cutting and digging along the inner wall of the casing with a soil cutter, the casing was twisted and taken down to measure the super-elevation and average the multiple measured values to ensure that the value was less than the specification limit of 6 mm. (7) Carefully trim the sample along the tap top and remove the bottom plate. When the bottom surface of the sample exceeds the outside of the tube, it should be repaired.…”

Section: Compaction Testmentioning

confidence: 99%

“…The main stabilized mechanism of PZ-1 on waste silt is shown in Figure 20. As seen in Figure 20, the Ca(OH) 2 from the CCR can react with the SiO 2 from the PA and the active mineral composition from the marine silt to form a cementitious substance such as calcium silicate hydrate (C-S-H), as shown in Equation (7). Moreover, Ca 2+ and Mg 2+ will carbonize under an alkaline environment to form CaCO 3 and CaMg(CO 3 ) 2 , as shown in Equations ( 8) and ( 9), to fill pores and cement soil particles and form a whole.…”

Section: Stabilized Mechanism Of Pz-1mentioning

confidence: 99%

“…The solidified silt can be used as roadbed filler to realize the reuse of engineering marine waste silt. At present, the most popular stabilized agents in soil improvement are lime, Portland cement, and their compound types [4][5][6][7]. By adding stabilized agent, the strength of the soil is enhanced due to the volcanic ash reactions and the hydration between calcium hydroxide, alumina, silica, and water [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Dry-Wet Cycle on the Performance of Marine Waste Silt Solidified by Calcium Carbide Residue and Plant Ash

Yang

Zhu

Tao

et al. 2022

JMSE

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This research aims to investigate the potential of engineering waste marine silt stabilized by a self-developed stabilizing chemical additive called PZ-1 as a subgrade filler. PZ-1 is composed of calcium carbide residue (CCR) and plant ash (PA) under an optimal composition ratio determined by coupling particle swarm optimization with a support vector machine (PSO-SVM). The effect of curing agent dosage (wg), temperature (wT), number of dry-wet cycles (Ndw), and organic matter content (wo) on the micro-macro behavior of the stabilized silt were investigated via the unconfined compressive strength (UCS) test, the scanning electron microscope (SEM) test, and the X-ray diffraction (XRD) test. The experimental results demonstrate a significant positive effect of PZ-1 on the unconfined compressive strength (qu) of marine engineering waste silt with curing agent contents of 0~8%. It was also found that strength improvement of the stabilized silt can be attributed to the formation of gelling substances such as C-S-H and calcite. The water resistance of the stabilized silt can be enhanced by increasing the dosage of the curing agent. Moreover, the organic matter content and ambient temperature have significant effects on the dry-wet cycle tolerance of solidified soil, among which temperature exhibits a more obvious impact.

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“…Within this context, large amounts of dredged sediment are produced as part of the construction of new ports, marine structures or waterways [17]. Marine sediment can be generated by other activities such as the deepening of access channels and port basins, and regular dredging operations to maintain adequate depths [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

et al. 2023

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An unprecedented rate of construction has profoundly increased the risk of scarcity of natural resources and threatened ecosystem sustainability. To establish an effective sustainable development policy, it is imperative to promote the use of responsible production channels, including waste recycling. Reuse of harbor dredged sediment is commonly investigated as a valuable alternative to non-renewable natural resources needed for construction. Sediment characterization is decisive in the valorization process, aiming to identify potential recycling paths. Existing research efforts, however, have rarely investigated case studies in developing countries. Moreover, they have tended to focus on the technical aspects, ignoring economic feasibility, which carries important implications. This paper fills this gap first by meticulously selecting laboratory tests for characterization within the means available in developing countries and second by conducting a cost-benefit analysis. The port of Safi, Morocco, was chosen for the implementation of the adopted approach. Results showed that dredged sediment is a sand readily reusable as a construction aggregate. Several applications are possible, the most interesting one being concrete works, as a substitute for conventional sand. While treatment by washing and dehydrating proved necessary, cost-benefit analysis confirmed the profitability of recycling. Hence, beneficial reuse of dredged sediment as construction material is technically and economically feasible.

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Assessment of the use of dredged marine materials in sanitary landfills: A case study from the Marmara sea

Cited by 23 publications

References 40 publications

RETRACTED ARTICLE: A Cluster-based Stratified Hybrid Decision Support Model under Uncertainty: Sustainable Healthcare Landfill Location Selection

RETRACTED ARTICLE: A Cluster-based Stratified Hybrid Decision Support Model under Uncertainty: Sustainable Healthcare Landfill Location Selection

Effect of the Dry-Wet Cycle on the Performance of Marine Waste Silt Solidified by Calcium Carbide Residue and Plant Ash

Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

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