Hydraulic performance and chemical compatibility of a powdered Na-bentonite geosynthetic clay liner permeated with mine drainage

Naka, Angelica; Flores, Giancarlo; Inui, Tomoyuki; Sakanakura, Hirofumi; Tanaka, Katsumi

doi:10.1016/j.sandf.2019.02.005

Cited by 12 publications

(5 citation statements)

References 37 publications

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“…The deposition of the hydration products from the reactions between the clay and CCR in the empty pores turned the structure of the pores from continuous pores into closed pores, resulting in an increase in the discontinuity of the pores within the matrix of the composite compacted clay liner. Therefore, the passing of water was delayed due to the meandering of the water through the tortuous pores of the composite compacted clay liner 19‐21 …”

Section: Resultsmentioning

confidence: 99%

“…These results are consistent with the UCS results in that the continuity of the water‐filled pores increased with increasing OMC but decreased with the progress of hydration due to the deposition of the hydration products in these pores. The remnants of water‐filled pores in compacted clay liners that have not been filled or only partly filled with hydration products will generally form a greater porosity, which plays an important role in controlling the water permeability of the composite compacted clay liner 19,21 …”

Section: Resultsmentioning

confidence: 99%

“…Ca, Si, and Al were identified as major elements in area no. 4, and this could be the products from the hydration reaction of the clay and WTR with CCR in the form of CSH or CAH 14,20,21 …”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the passing of water was delayed due to the meandering of the water through the tortuous pores of the composite compacted clay liner. [19][20][21] 3.4 | Effect of the WTR and CCR on the engineering properties of compacted clay…”

Section: Raw Materials Characterizationmentioning

confidence: 99%

“…The remnants of water-filled pores in compacted clay liners that have not been filled or only partly filled with hydration products will generally form a greater porosity, which plays an important role in controlling the water permeability of the composite compacted clay liner. 19,21 The optimum composition of the clay, WTR, and CCR was Figure 4. 17 The SEM image of the compacted WTR is shown in Figure 9a.…”

Section: Raw Materials Characterizationmentioning

confidence: 99%

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Reuse of calcium carbide and water treatment residues in the bottom clay liner of a municipal solid waste landfill

Prakongwittaya

Asavapisit

Piyaphanuwat

2020

Env Prog and Sustain Energy

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In this work, calcium carbide residue (CCR) and water treatment residue (WTR) were used in combination with clay to produce a composite bottom clay liner for sanitary landfills. The effects of these two residues on the performance of a composite bottom clay liner by means of compressive strength development and the coefficient of permeability were studied. The WTR was classified as high plasticity silt according to the Unified Soil Classification System and was used to replace clay with clay:WTR ratios of

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Ca, Si, and Al were identified as major elements in area no. 4, and this could be the products from the hydration reaction of the clay and WTR with CCR in the form of CSH or CAH 14,20,21 …”

Section: Resultsmentioning

confidence: 99%

Section: Raw Materials Characterizationmentioning

confidence: 99%

Section: Raw Materials Characterizationmentioning

confidence: 99%

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