Geotechnical landfill monitoring — adaptations needed

Lopes, Maria de Lurdes; Gomes, Cristina Cunha

doi:10.1680/envgeo.13.00014

Environmental Geotechnics

2015

DOI: 10.1680/envgeo.13.00014

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Geotechnical landfill monitoring — adaptations needed

Maria de Lurdes Lopes¹,

Cristina Cunha Gomes²

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Cited by 6 publications

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References 11 publications

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“…The second paper, by Lopes and Gomes (2015), explicitly deliberates the technical difficulties associated with the evaluation and prolonged monitoring of two landfills (the Maia and Santo Tirso landfills in Portugal) using conventional instrumentation techniques. Furthermore, the study dictates the glitches associated with the high landfill deformations, lack of sophisticated monitoring instruments, various enviro-physico-chemical aggressiveness, external causes and the limited in-house expertise and exposure available to handle these issues that could be hazardous.…”

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confidence: 99%

Editorial

Singh¹

2015

Environmental Geotechnics

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mentioning

confidence: 99%

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Singh¹

2015

Environmental Geotechnics

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Shear behaviour of Canadian marine clay/geomembrane interface under freeze–thaw cycles

Liling

FallMamadou

2021

Environmental Geotechnics

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The influence of the number of freeze–thaw (F–T) cycles on the interface shear behaviour of a compacted marine clay (Leda clay)/smooth high-density polyethylene (HDPE) geomembrane is investigated in this paper. Shear tests are performed on samples subjected to various numbers of F–T cycles: zero, one, two, three, five and ten. The test results show that the interface shear strength of the Leda clay/smooth HDPE geomembrane is lower than that of Leda clay. The interface shear strength of the Leda clay/smooth HDPE geomembrane decreases with increasing number of F–T cycles. Furthermore, the interface shear friction angles of the Leda clay/smooth HDPE geomembrane are significantly reduced within the first three F–T cycles. The reduction in strength beyond the three F–T cycles is negligible. The total decrease in the shear strength of the samples that are not subjected to an F–T cycle compared to that of samples subjected to ten F–T cycles is 18·3, 17·6 and 13·6% under a vertical stress of 150, 250 and 350 kPa, respectively.

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Non-linear elastic model for MSW considering dilatancy effect

KeHan

ChenYun-min

DongDing

et al. 2019

Environmental Geotechnics

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Study of the stress-strain behaviour of municipal solid waste (MSW) is important in landfill design and management. Non-linear elastic constitutive models are usually in a simple form and convenient in engineering applications; however, most existing non-linear elastic models do not adequately consider the dilatancy behaviour, which has a significant influence on the strength and deformation behaviours of MSW. In this paper, a non-linear elastic model for the prediction of stress-strain behaviour of MSW is proposed based on the results of consolidated drained triaxial compression tests. The influence of dilatancy behaviour is identified and highlighted. The generalised shear stress can be normalised well by dividing the shear stress by the power function of the mean normal stress. Total expressions of normalised volumetric strain and generalised shear strain were established, and the dilatancy modulus and hardening modulus of the proposed model were obtained. The proposed model was used to simulate test results obtained from both published studies and the authors' laboratory testing. The simulation results were in good agreement with the experimental values in general, although deviations were observed in the simulations of volumetric strain or shear stress for the high-dispersion characteristics of MSW. Notation

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Geotechnical landfill monitoring — adaptations needed

Cited by 6 publications

References 11 publications

Editorial

Editorial

Shear behaviour of Canadian marine clay/geomembrane interface under freeze–thaw cycles

Non-linear elastic model for MSW considering dilatancy effect

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