Arrhenius modeling to predict geosynthetic degradation

Koerner, Robert M.; Lord, Arthur E.; Hsuan, Yick H.

doi:10.1016/0266-1144(92)90042-9

Cited by 85 publications

(41 citation statements)

References 3 publications

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“…These can be used to estimate the antioxidant depletion stage at lower temperatures than those used in the study by means of Arrhenius modeling. According to Koerner et al (1992), if the activation energy (i.e., the slope of the linear relation between the natural logarithms of the laboratory depletion rates versus the temperature at which they were obtained) remains constant over the range of temperatures to be extrapolated, then the depletion rate can be predicted at these temperatures. Many researchers have adopted this approach based on the incubation of HDPE geomembranes in different media at temperatures between room temperature and 95 o C (e.g., Koerner 1998, Müller andJacob 2003;Rowe et al 2009Rowe et al , 2014Abdelaal and Rowe 2014).…”

Section: Predictions Of Antioxidant Depletionmentioning

confidence: 99%

Antioxidant depletion in high-density polyethylene (HDPE) geomembrane with hindered amine light stabilizers (HALS) in low-pH heap leach environment

Rowe

Abdelaal

2016

Can. Geotech. J.

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Antioxidant depletion from a high density polyethylene geomembrane with hindered amine light stabilizers (HALS) immersed in seven different low pH solutions is examined over a 3-year period. The examined solutions had the range of pH (0.5, 1.25, and 2.0) likely to encompass the pH of the leach solutions found in copper, nickel, and uranium heap leach pads. The metal concentration for these solutions is adopted from copper raffinate solutions. Additional solutions are investigated to examine the effects of field practices such as using surfactants in the leach solutions and pre-curing of the ores used to improve the metallurgical response of the ore. For the antioxidants detected by standard oxidative induction time (Std-OIT), there was a depletion to residual value of about 20% of the initial Std-OIT that varied depending on the incubation temperature and pH of the solution whereas decreasing the pH from 2 to 0.5 did not significantly affect the depletion rates of Std-OIT. The antioxidants detected by high pressure oxidative induction time (HP-OIT) exhibited the fastest depletion in pH=1.25 with the highest residual values followed by pH 2.0 and the slowest HP-OIT depletion was in pH=0.5 but with the lowest residual values. Arrhenius modelling is used to predict the length antioxidant depletion stage for each solution based on both Std-OIT and HP-OIT.

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Section: Predictions Of Antioxidant Depletionmentioning

confidence: 99%

Antioxidant depletion in high-density polyethylene (HDPE) geomembrane with hindered amine light stabilizers (HALS) in low-pH heap leach environment

Rowe

Abdelaal

2016

Can. Geotech. J.

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“…Arrhenius modelling has been widely used to extrapolate the time for antioxidant depletion observed in accelerated laboratory tests at sitespecific temperatures (e.g., Hsuan and Koerner 1998;Sangam and Rowe 2002;Müller and Jacob 2003;Gulec et al 2004;Rimal et al 2004;Rowe et al 2008Rowe et al , 2009Rowe et al , 2010aRowe et al , 2010bRimal 2008a, 2008b;Abdelaal et al 2011Abdelaal et al , 2012. Koerner et al (1992) demonstrated the validity of application of Arrhenius modelling for modelling creep and stress relaxation for semi-crystalline polymers. Soong et al (1994) used tTS for stress relaxation predictions while Sabir and Brachman (2012) used tTS to extrapolate GMB tensile strains under simulated field conditions using a multi component system having a GMB on top of clay with a geotextile protection layer for 160 mm diameter GMB sample tested under single machined steel probe intended to simulate a gravel particle.…”

Section: Effect Of Temperature On Gmb Crackingmentioning

confidence: 86%

“…Figure 11. Number of ruptures formed in GLLS after test termination for samples tested at different temperatures predictive technique most widely used for polymer degradation based on a time-temperature superposition (tTS) principle (Koerner et al 1992). Arrhenius modelling has been widely used to extrapolate the time for antioxidant depletion observed in accelerated laboratory tests at sitespecific temperatures (e.g., Hsuan and Koerner 1998;Sangam and Rowe 2002;Müller and Jacob 2003;Gulec et al 2004;Rimal et al 2004;Rowe et al 2008Rowe et al , 2009Rowe et al , 2010aRowe et al , 2010bRimal 2008a, 2008b;Abdelaal et al 2011Abdelaal et al , 2012.…”

Section: Effect Of Temperature On Gmb Crackingmentioning

confidence: 99%

Brittle rupture of an aged HPDE geomembrane at local gravel indentations under simulated field conditions

Abdelaal

Rowe

Brachman

2014

Geosynthetics International

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The susceptibility of a 1.5 mm thick high-density polyethylene geomembrane to brittle rupture from long-term stress cracking in a simulated municipal solid waste landfill liner is examined. The geomembrane was pre-aged in a leachate at 858C to lower the notched constant tensile load stress crack resistance of the geomembrane to about 75 h. The aged geomembrane was then used as part of a composite liner system in geosynthetic liner longevity simulators (GLLSs) with a geosynthetic clay liner and sand foundation layer below the geomembrane and a 560 g/m 2 geotextile protection layer and 50 mm drainage gravel above the geomembrane. The GLLSs allow the simulation of field conditions including elevated temperatures, overburden pressure, leachate circulation, and composite liner exposure conditions. The geomembrane experienced brittle rupture on the side slopes of the local gravel indentations for temperatures between 55 and 858C. The higher the liner temperature, the shorter the time to rupture and the higher the tensile strain at rupture. Arrhenius modelling of the test data gave an activation energy of E a ¼ 112 kJ/mol.

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“…It is extremely useful for monitoring the depletion of antioxidants in the geomembrane (Koerner et al, 1992;Hsuan and Koerner, 1995;Hsuan and Koerner, 1998;Sangam and Rowe, 2002;Mu¨ller and Jakob, 2003). Standard OIT tests were conducted using a differential scanning calorimeter (DSC) (TA Instruments DSC 2910) following ASTM D3895-97 (1998c).…”

Section: Oxidative Induction Time (Oit) Testsmentioning

confidence: 99%

Performance of a geocomposite liner for containing Jet A-1 spill in an extreme environment

Rowe

Mukunoki

Bathurst

et al. 2007

Geotextiles and Geomembranes

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Arrhenius modeling to predict geosynthetic degradation

Cited by 85 publications

References 3 publications

Antioxidant depletion in high-density polyethylene (HDPE) geomembrane with hindered amine light stabilizers (HALS) in low-pH heap leach environment

Antioxidant depletion in high-density polyethylene (HDPE) geomembrane with hindered amine light stabilizers (HALS) in low-pH heap leach environment

Brittle rupture of an aged HPDE geomembrane at local gravel indentations under simulated field conditions

Performance of a geocomposite liner for containing Jet A-1 spill in an extreme environment

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