Susceptibility and defects from the active life of landfill geomembrane liners

Emmanuel Emem Obong Agbenyeku, Edison Muzenda, M. I. Msibi

Research output: Contribution to conferencePaper

Abstract

The useful/active life of geomembrane (GM) liners are largely reliant on their degradation rate viz-a-viz; the generation of wrinkles, cracks and holes in the liner. This is mostly due to exposure to the elements or by virtue of age as well as the level of leachate or gas leakage specific to a site. The active life of a GM liner in a landfill requires in-depth review of material degradation processes, physical damage and the development of holes by stress cracking. This study highlights the outcomes of a short-term laboratory investigation offering grounds on which projections on medium to long-term landfill liner behaviours can be monitored particularly in Johannesburg, South Africa. Laboratory model of a hole creation born from the active life of a GM liner is pinpointed. It is well known how electrical leak pointer surveys are effective ways of identifying holes caused by
physical damage during liner installation and waste disposal, leading to the their repairs. So also is the degradation of the GM liner known as being dependent on the activation energy of the antioxidant depletion process and the oxidative resistance of the material including exposure conditions and limits. In cases where liners are exposed to long-term stresses, stress cracking triggers hole generation. Moreover, the rate of cracking increases once oxidation of the liner begins. As such, approaches to curb the creation of defects are addressed
herein.
Original languageEnglish
Number of pages10
Publication statusPublished - 2017
Event2nd International Engineering Conference 2017 - Minna, Nigeria
Duration: Oct 17 2017Oct 19 2017

Conference

Conference2nd International Engineering Conference 2017
Abbreviated titleIEC 2017
CountryNigeria
CityMinna
Period10/17/1710/19/17

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geomembrane
liner
defect
landfill
degradation
landfill liner
damage
waste disposal
activation energy
antioxidant
repair
leakage
leachate
crack
oxidation
gas

Cite this

Agbenyeku, E. E. O., Muzenda, E., & Msibi, M. I. (2017). Susceptibility and defects from the active life of landfill geomembrane liners. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.
Agbenyeku, Emmanuel Emem Obong ; Muzenda, Edison ; Msibi, M. I. / Susceptibility and defects from the active life of landfill geomembrane liners. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.10 p.
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Agbenyeku, EEO, Muzenda, E & Msibi, MI 2017, 'Susceptibility and defects from the active life of landfill geomembrane liners' Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria, 10/17/17 - 10/19/17, .

Susceptibility and defects from the active life of landfill geomembrane liners. / Agbenyeku, Emmanuel Emem Obong; Muzenda, Edison; Msibi, M. I.

2017. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.

Research output: Contribution to conferencePaper

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AU - Muzenda, Edison

AU - Msibi, M. I.

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N2 - The useful/active life of geomembrane (GM) liners are largely reliant on their degradation rate viz-a-viz; the generation of wrinkles, cracks and holes in the liner. This is mostly due to exposure to the elements or by virtue of age as well as the level of leachate or gas leakage specific to a site. The active life of a GM liner in a landfill requires in-depth review of material degradation processes, physical damage and the development of holes by stress cracking. This study highlights the outcomes of a short-term laboratory investigation offering grounds on which projections on medium to long-term landfill liner behaviours can be monitored particularly in Johannesburg, South Africa. Laboratory model of a hole creation born from the active life of a GM liner is pinpointed. It is well known how electrical leak pointer surveys are effective ways of identifying holes caused byphysical damage during liner installation and waste disposal, leading to the their repairs. So also is the degradation of the GM liner known as being dependent on the activation energy of the antioxidant depletion process and the oxidative resistance of the material including exposure conditions and limits. In cases where liners are exposed to long-term stresses, stress cracking triggers hole generation. Moreover, the rate of cracking increases once oxidation of the liner begins. As such, approaches to curb the creation of defects are addressedherein.

AB - The useful/active life of geomembrane (GM) liners are largely reliant on their degradation rate viz-a-viz; the generation of wrinkles, cracks and holes in the liner. This is mostly due to exposure to the elements or by virtue of age as well as the level of leachate or gas leakage specific to a site. The active life of a GM liner in a landfill requires in-depth review of material degradation processes, physical damage and the development of holes by stress cracking. This study highlights the outcomes of a short-term laboratory investigation offering grounds on which projections on medium to long-term landfill liner behaviours can be monitored particularly in Johannesburg, South Africa. Laboratory model of a hole creation born from the active life of a GM liner is pinpointed. It is well known how electrical leak pointer surveys are effective ways of identifying holes caused byphysical damage during liner installation and waste disposal, leading to the their repairs. So also is the degradation of the GM liner known as being dependent on the activation energy of the antioxidant depletion process and the oxidative resistance of the material including exposure conditions and limits. In cases where liners are exposed to long-term stresses, stress cracking triggers hole generation. Moreover, the rate of cracking increases once oxidation of the liner begins. As such, approaches to curb the creation of defects are addressedherein.

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Agbenyeku EEO, Muzenda E, Msibi MI. Susceptibility and defects from the active life of landfill geomembrane liners. 2017. Paper presented at 2nd International Engineering Conference 2017, Minna, Nigeria.