A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Long-term Performance of Conductive-backed multilayered HDPE Geomembranes
https://orcid.org/0000-0002-1009-0447
Abstract The long-term performance of three multilayered textured white conductive-backed geomembranes (GMBs) is compared to the comparable textured nonconductive GMBs and their smooth edge/equivalent to investigate the effect of the conductive layer on their longevity. Oven immersion in synthetic municipal solid waste leachate is used at a range of temperatures to accelerate the ageing during an incubation period of 50 months. It is shown that the conductive layer can antagonistically or synergistically affect the antioxidant depletion of conductive-backed GMBs relative to nonconductive GMBs produced by the same GMB manufacturer and formulated using the same nominal resin and antioxidant package. However, their relative degradation at 85 °C does not necessarily follow their relative antioxidant depletion times implying that the manufacturing process and the interaction between the additive packages of these GMBs can affect their relative degradation beyond the antioxidant depletion stage. Arrhenius modelling predicts the antioxidant depletion stage at field temperatures ranging between 180 and 1400 years at 20 °C for two different conductive-backed GMBs produced by two different manufacturers. With such variation in the long-term performance of conductive-backed GMBs currently available in the market, their durability should be investigated before their use in barrier systems to ensure they can meet the required design life of the desired geoenvironmental application.
Highlights First investigation into the degradation behaviour of conductive-backed geomembranes. Examines the effect of texturing on the durability of conductive-backed geomembranes. Estimates antioxidant depletion time of multilayered geomembranes at field temperatures.
Long-term Performance of Conductive-backed multilayered HDPE Geomembranes
https://orcid.org/0000-0002-1009-0447
Abstract The long-term performance of three multilayered textured white conductive-backed geomembranes (GMBs) is compared to the comparable textured nonconductive GMBs and their smooth edge/equivalent to investigate the effect of the conductive layer on their longevity. Oven immersion in synthetic municipal solid waste leachate is used at a range of temperatures to accelerate the ageing during an incubation period of 50 months. It is shown that the conductive layer can antagonistically or synergistically affect the antioxidant depletion of conductive-backed GMBs relative to nonconductive GMBs produced by the same GMB manufacturer and formulated using the same nominal resin and antioxidant package. However, their relative degradation at 85 °C does not necessarily follow their relative antioxidant depletion times implying that the manufacturing process and the interaction between the additive packages of these GMBs can affect their relative degradation beyond the antioxidant depletion stage. Arrhenius modelling predicts the antioxidant depletion stage at field temperatures ranging between 180 and 1400 years at 20 °C for two different conductive-backed GMBs produced by two different manufacturers. With such variation in the long-term performance of conductive-backed GMBs currently available in the market, their durability should be investigated before their use in barrier systems to ensure they can meet the required design life of the desired geoenvironmental application.
Highlights First investigation into the degradation behaviour of conductive-backed geomembranes. Examines the effect of texturing on the durability of conductive-backed geomembranes. Estimates antioxidant depletion time of multilayered geomembranes at field temperatures.
Long-term Performance of Conductive-backed multilayered HDPE Geomembranes
https://orcid.org/0000-0002-1009-0447
Abstract The long-term performance of three multilayered textured white conductive-backed geomembranes (GMBs) is compared to the comparable textured nonconductive GMBs and their smooth edge/equivalent to investigate the effect of the conductive layer on their longevity. Oven immersion in synthetic municipal solid waste leachate is used at a range of temperatures to accelerate the ageing during an incubation period of 50 months. It is shown that the conductive layer can antagonistically or synergistically affect the antioxidant depletion of conductive-backed GMBs relative to nonconductive GMBs produced by the same GMB manufacturer and formulated using the same nominal resin and antioxidant package. However, their relative degradation at 85 °C does not necessarily follow their relative antioxidant depletion times implying that the manufacturing process and the interaction between the additive packages of these GMBs can affect their relative degradation beyond the antioxidant depletion stage. Arrhenius modelling predicts the antioxidant depletion stage at field temperatures ranging between 180 and 1400 years at 20 °C for two different conductive-backed GMBs produced by two different manufacturers. With such variation in the long-term performance of conductive-backed GMBs currently available in the market, their durability should be investigated before their use in barrier systems to ensure they can meet the required design life of the desired geoenvironmental application.
Highlights First investigation into the degradation behaviour of conductive-backed geomembranes. Examines the effect of texturing on the durability of conductive-backed geomembranes. Estimates antioxidant depletion time of multilayered geomembranes at field temperatures.
Long-term Performance of Conductive-backed multilayered HDPE Geomembranes
Zafari, M. (author) / Abdelaal, F.B. (author) / Rowe, R. Kerry (author)
Geotextiles and Geomembranes ; 51 ; 137-155
2023-03-26
19 pages
Article (Journal)
Electronic Resource
English
| Wiley | 2009
Long-Term Performance of HDPE Geomembranes Exposed to High Service Temperature
| British Library Conference Proceedings | 2017
Durability of HDPE geomembranes
| Online Contents | 2002
Interface Friction & HDPE Geomembranes
| British Library Conference Proceedings | 2008