Effects of desiccation-induced cracking and leachate infiltration on the hydraulic conductivity of natural and olivine-treated marine clay

Emmanuel, Endene; Anggraini, Vivi

doi:10.1007/s13762-019-02606-x

Cited by 13 publications

(10 citation statements)

References 47 publications

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“…Lower water content balanced with higher compaction energy can minimize the potential for desiccation cracking (Cheng et al, 2021;Moses et al, 2019). Many researchers have demonstrated that the wetting-drying cycle applied to the soil liner exhibits a relatively constant hydraulic conductivity (Emmanuel & Anggraini, 2020;Ivoke et al, 2021;Mazzieri et al, 2017). In the rst drying cycle, the soil texture changes due to the weakened soil structure and this causes shrinkage (Lu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigation into the cracking potential of different composite liners under wetting-drying cycles

Puspita,

Budihardjo,

Samadikun

2023

Preprint

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The formation of cracks in compacted clay liners used as landfill liners creates a preferential pathway for water flow and pollutant transport, resulting in polluted soil and an increase in the hydraulic conductivity of the soil. The desiccation crack intensity in six variations in the materials of clay soil commonly used for landfill liner was studied using the wetting-drying cycle method and analyzed using crack intensity factor (CIF) values for 15 days with observations every 8 hours; the crack intensity was identified based on color sensitivity using MATLAB R2018b software. The results indicate that the more bentonite clay there is in the soil, the higher its CIF value becomes because bentonite has a high plasticity index. Adding lime and coconut fiber is associated with a lower CIF, and higher plastic and liquid limits are associated with higher CIF values. The CIF pattern identified in the soil variations (V1 to V6) shows that the highest CIF value is in V4 (4.11%), and the lowest CIF value is in V3 (0.0138%), with the reduction of CIF in two groups of clayey soils (A1 and A2) during the experiment was over A1 (10%) and A2 (16%). According to the results of this study, desiccation cracking testing on soil using the wetting-drying cycle method using CIF values analyzed every 8 hours is promising for characterizing environmental conditions with accurate observations.

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Section: Introductionmentioning

confidence: 99%

Investigation into the cracking potential of different composite liners under wetting-drying cycles

Puspita,

Budihardjo,

Samadikun

2023

Preprint

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“…To isolate the waste in the landfill from the surrounding environment, thereby minimizing soil and groundwater contamination, as well as environmental degradation, various types of hydraulic barriers have been proposed and used in engineered landfills [1,[9][10][11][12][13][14]. Over the past years, although landfill technology has seen major advancements, such as the development of synthetic liner materials, compacted clay liners (CCLs), however, still remain a critical component of liner systems in engineered landfills [1,3,12,15]. CCLs are commonly employed in barrier systems owing to their availability, low hydraulic conductivity, excellent compatibility with the permeating leachate, high attenuation capacity, and cost-effectiveness [8,9,16].…”

Section: Introductionmentioning

confidence: 99%

“…However, in the field, CCLs can be damaged during installation. Likewise, after installation, failure mechanisms and environmental conditions including day-night temperature variations, freeze/thaw and dry/wet cycling's, intrusion of biota, piping, hydraulic fracturing, unequal settlement, and desiccation can cause cracks in the CCLs [12,[17][18][19]. These cracks can result in a decrease in the liner strength and an increase in hydraulic conductivity, leading to an increased possibility of groundwater and soil contamination.…”

Section: Introductionmentioning

confidence: 99%

CO2 Carbonation of Olivine-Admixed Marine Clay: Suitability for Bottom Liner Application

et al. 2021

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This paper focuses on employing an optimization approach in evaluating the hydraulic conductivity (HC) of CO2-carbonated olivine-admixed marine clay for possible utilization as a hydraulic barrier in engineered landfills to minimize leachate migration. The attainable region technique was used to optimize the olivine particle size during the grinding process before treating the soil, while the response surface methodology was used in designing the experiments, evaluating the results, and optimizing the variables responsible for reducing the HC of the CO2-carbonated olivine-treated clay. The effects of the control factors (olivine content, carbonation time, and carbonation pressure) on the response (HC) were studied by variance analysis. The factors and the response were related by a developed regression model. Predicted values from the model were in concurrence with their experimental counterparts. The results show that the HC of the CO2-carbonated olivine-treated clay samples met the Malaysian regulatory specification of ≤10−8 m/s for liner utilization. The optimum conditions were 24.7% olivine content, 20.1 h carbonation time, and 161 kPa carbonation pressure, which decreased the HC by approximately 98%. CO2-carbonation and olivine blend proved to be a sustainable technique to reduce the clay’s HC for possible application as a liner material in engineered landfills.

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“…Reactive minerals constitute one such natural materials commonly used for soil stabilization projects. To that effect, a good number of researchers have made an effort to report the application of reactive minerals, such as olivine, wollastonite, magnesia, and serpentine, as improvers for weak soils [1][2][3][4][5]. Olivine has been demonstrated to be the most promising candidates, with valuable environmental assets among the varieties mentioned above [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Attainable Region Approach in Analyzing the Breakage Behavior of a Bed of Olivine Sand Particles: Optimizing Impact Energy and Particle Size

et al. 2020

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In this study, we investigated the breakage behavior of a bed of olivine sand particles using a drop-weight impact test, with drop weights of various shapes (oval, cube, and sphere). An Attainable Region (AR) technique, which is a model-free and equipment-independent technique, was then applied to optimize the impact energy during the breakage process and also to get particles in defined particle size classes. The findings revealed that the different drop weights produce products within the three different particle size classes (feed, intermediate, and fine). A higher mass fraction of materials in the fine-sized class (−75 μm) was obtained when the spherical drop weight was used relative to the cubic and oval drop weights. The drop height was found to have a significant influence on the breakage process. The AR technique proved to be a practical approach for optimizing impact energy and particle size during the breakage of a bed of olivine particles, with potential application in sustainable soil stabilization projects.

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Effects of desiccation-induced cracking and leachate infiltration on the hydraulic conductivity of natural and olivine-treated marine clay

Cited by 13 publications

References 47 publications

Investigation into the cracking potential of different composite liners under wetting-drying cycles

Investigation into the cracking potential of different composite liners under wetting-drying cycles

CO2 Carbonation of Olivine-Admixed Marine Clay: Suitability for Bottom Liner Application

Attainable Region Approach in Analyzing the Breakage Behavior of a Bed of Olivine Sand Particles: Optimizing Impact Energy and Particle Size

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