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Stress–strain characteristics of landfill clay cover barriers under geogrid reinforcements

Abstract

Low shear strengths in landfill clay cover barriers lead to the development of tensile cracks in the soil, thus decreasing the usefulness of the barrier to resist water inlet into the landfill system. As cracks begin to form, water infiltration increases, thus increasing the wastewater interaction, leading to the development of the excess amount of leachate. Usage of geogrids within the landfill clay cover barrier has found wide-scale applications in bolstering the shear strength of the soil and thus preserving its utility. In this paper, the shear behavior of landfill clay cover soil with geogrids has been analyzed using triaxial compression tests. Significant parameters such as geogrid properties, initial geogrid spacing, number of geogrids, confining pressure and spacing between the geogrids have been investigated. A soil mixture of kaolin clay and sand, in 4:1 ratio, respectively, representing the typical characteristics of landfill clay cover barrier soil found in the field, was compacted at OMC + 5% and was used in the present study. The study demonstrates the increase in shear strength of landfill clay cover barrier with geogrids and its interdependence on geogrid spacing and geogrid properties, number of reinforcement layers and confining pressure. The inclusion of geogrids improved the load-carrying capacity and the axial strain at failure of the soil, thus signifying the benefits of inclusion of geogrids in cover barriers, especially to prevent tensile cracks. The results obtained from the triaxial tests were used for the computation of elasticity modulus of the cover barrier soil. Significant parameters necessary for the computation of the elasticity modulus were chosen, and the model with a confidence level greater than 95% was presented to deduce the settlement in geogrid-reinforced landfill clay cover barriers.

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References

  1. 1.

    Sharholy M, Ahmad K, Mahmood G, Trivedi RC (2008) Municipal solid waste management in Indian cities—a review. Waste Manag 28(2):459–467

  2. 2.

    Rowe R (2012) Ferroco Terzaghi Oration Design and construction of barrier systems to minimize environmental impacts due to municipal solid waste leachate and gas. Indian Geotech J 42(4):223–256

  3. 3.

    Lee SY, Tank RW (1985) Role of clays in the disposal of nuclear waste: a review. Appl Clay Sci 1(1–2):145–162

  4. 4.

    Koerner RM, Daniel DE (1997) Materials. In: Koerner RM, Daniel DE (eds) Final covers for solid waste landfills and abandoned dumps. ASCE Press, Reston, pp 78–79

  5. 5.

    Keck KN, Seitz RR (2002) Potential for subsidence at the low-level radioactive waste disposal area, INEEL/EXT-02-01154, Idaho National Engineering and Environmental Laboratory, U.S. Department of Energy, Washington, DC

  6. 6.

    Sivakumar Babu GL, Reddy KR, Chouksey SK (2010) Constitutive model for municipal solid waste incorporating mechanical creep and biodegradation-induced compression. Waste Manag 30(1):11–22

  7. 7.

    Cheng SC, Larralde JL, Martin J (1994) Hydraulic conductivity of compacted clayey soils under distortion or elongation conditions. In: Daniel DE, Trautwein SJ (eds) Hydraulic conductivity and waste contaminant transport in soil. ASTM International, ‎West Conshohocken

  8. 8.

    Viswanadham BVS, Sathiyamoorthy R, Divya PV, Gourc J (2011) Influence of randomly distributed geofibers on the integrity of clay-based landfill covers: a centrifuge study. Geosynth Int 18(5):255–271

  9. 9.

    Koda E (2012) Anthropogenic waste products utilization for old landfills rehabilitation. Ann Wars Univ Life Sci Land Reclam 44(1):75–88

  10. 10.

    Palmeira EM, Viana HNL (2003) Effectiveness of geogrids as inclusions in cover soils of slopes of waste disposal areas. Geotext Geomembr 21(5):317–337

  11. 11.

    Divya PV, Viswanadham BVS, Gourc JP (2012) Influence of geomembrane on the deformation behaviour of clay-based landfill covers. Geotext Geomembr 34:158–171

  12. 12.

    Bacas BM, Cañizal J, Konietzky H (2015) Shear strength behavior of geotextile/geomembrane interfaces. J Rock Mech Geotech Eng 7(6):638–645

  13. 13.

    Feng S-J, Ai S-G, Huang R-Q (2016) Stability analysis of landfill cover systems considering reinforcement. Environ Earth Sci 75(4):303

  14. 14.

    Haas R, Walls J, Carroll RG (1988) Geogrid reinforcement of granular bases in flexible pavements. Transp Res Rec 1188:19–27

  15. 15.

    Bathurst RJ, Wawrychuk WF, Jarrett PM (1988) Laboratory investigation of two large-scale geogrid reinforced soil walls. In: Jarrett PM, McGown A (eds) The application of polymeric reinforcement in soil retaining structures. Springer, Dordrecht, pp 71–125

  16. 16.

    Alfaro MC, Miura N, Bergado DT (1995) Soil-geogrid reinforcement interaction by pullout and direct shear tests. Geotech Test J 18(2):157–167

  17. 17.

    Yetimoglu T, Wu JT, Saglamer A (1994) Bearing capacity of rectangular footings on geogrid-reinforced sand. J Geotech Eng 120(12):2083–2099

  18. 18.

    Yu Y, Bathurst RJ, Allen TM, Nelson R (2016) Physical and numerical modelling of a geogrid-reinforced incremental concrete panel retaining wall. Can Geotech J 53(12):1883–1901

  19. 19.

    Latha GM, Murthy VS (2007) Effects of reinforcement form on the behavior of geosynthetic reinforced sand. Geotext Geomembr 25(1):23–32

  20. 20.

    Nguyen MD, Yang KH, Lee SH, Wu CS, Tsai MH (2013) Behavior of nonwoven-geotextile-reinforced sand and mobilization of reinforcement strain under triaxial compression. Geosynth Int 20(3):207–225

  21. 21.

    Mudgal A, Sarkar R, Shrivastava AK (2018) Influence of geotextiles in enhancing the shear strength of Yamuna sand. Int J Appl Eng Res 13(12):10733–10740

  22. 22.

    Goodarzi S, Shahnazari H (2019) Strength enhancement of geotextile-reinforced carbonate sand. Geotext Geomembr 47(2):128–139

  23. 23.

    Sharma A, Sharma RK (2019) Effect of addition of construction–demolition waste on strength characteristics of high plastic clays. J Innov Infrastruct 1(1):24

  24. 24.

    Daniel DE, Wu Y-K (1993) Compacted clay liners and covers for arid sites. J Geotech Eng 119(2):223–237

  25. 25.

    Benson CH, Daniel DE, Boutwell GP (1999) Field performance of compacted clay liners. J Geotechnol Geoenviron Eng 125(5):390–403

  26. 26.

    IS: 2720 (Part XII) (1981) Determination of shear strength parameters of soil from consolidated undrained triaxial compression test with measurement of pore water pressure. Bureau of Indian Standards, New Delhi, India

  27. 27.

    Duncan JM, Dunlop P (1968) The significance of cap and base restraint. J Soil Mech Found Div 94(1):271–290

  28. 28.

    Shukla SK (2002) Geosynthetics and their applications. Thomas Telford, London

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Correspondence to Akshit Mittal.

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Mittal, A., Shrivastava, A.K. Stress–strain characteristics of landfill clay cover barriers under geogrid reinforcements. Innov. Infrastruct. Solut. 5, 19 (2020). https://doi.org/10.1007/s41062-020-0263-7

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Keywords

  • Geogrids
  • Stress–strain characteristics
  • Landfill
  • Barriers
  • Tensile cracks
  • Regression