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Long-Term Performance of HDPE Geomembranes Exposed to High Service Temperature
Polyethylene geomembranes typically have poor behavior when exposed to high temperature. Polyethylene materials soften as the temperature increases and lose their strength completely near 120C. Other research with landfill liners has shown that increasing the service temperature of a polyethylene geomembrane to 85C can reduce the service life of the liner to as little as 3 years through the rapid depletion of antioxidants. In this paper, the performance of a high temperature resistant geomembrane material was evaluated over a year-long period and compared to other geomembrane materials. The samples were exposed to three different service temperatures and then periodically evaluated for antioxidant retention. An Arrhenius-model was used to project antioxidant depletion. The projected service life of HDPE geomembranes exposed to high temperatures in these conditions was estimated considering antioxidant depletion as the end-of-life criteria.
Long-Term Performance of HDPE Geomembranes Exposed to High Service Temperature
Polyethylene geomembranes typically have poor behavior when exposed to high temperature. Polyethylene materials soften as the temperature increases and lose their strength completely near 120C. Other research with landfill liners has shown that increasing the service temperature of a polyethylene geomembrane to 85C can reduce the service life of the liner to as little as 3 years through the rapid depletion of antioxidants. In this paper, the performance of a high temperature resistant geomembrane material was evaluated over a year-long period and compared to other geomembrane materials. The samples were exposed to three different service temperatures and then periodically evaluated for antioxidant retention. An Arrhenius-model was used to project antioxidant depletion. The projected service life of HDPE geomembranes exposed to high temperatures in these conditions was estimated considering antioxidant depletion as the end-of-life criteria.
Long-Term Performance of HDPE Geomembranes Exposed to High Service Temperature
Mills, Andrew (author) / Beaumier, David (author)
Geotechnical Frontiers 2017 ; 2017 ; Orlando, Florida
Geotechnical Frontiers 2017 ; 22-31
2017-03-30
Conference paper
Electronic Resource
English
Long-Term Performance of HDPE Geomembranes Exposed to High Service Temperature
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