A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Geomembrane Cracking and Final Cover Performance
Past estimates of geomembrane longevity have typically focused on the degradation of the polymer tensile properties with time, demonstrating that these materials exceed expectations for typical municipal solid waste (MSW) facilities. However, interest in the performance of geomembranes for the disposal of low-level (LLW) and intermediate-level (ILW) radioactive waste landfills poses additional challenges. Many of these facilities use probabilistic models of long-term performance in terms of contaminant transport and exposure to make design decisions. However, current models have relatively little information quantifying the potential for leakage through the geomembrane that directly consider the change in material properties with time. Studies of the various mechanical modes of deformation and rupture for polyethylene sheet allow for this quantification. An example of this approach illustrates how the consideration of crack development in final cover geomembranes can be adapted for use in simulations of long-term landfill system performance suitable for LLW/ILW facility performance assessments.
Geomembrane Cracking and Final Cover Performance
Past estimates of geomembrane longevity have typically focused on the degradation of the polymer tensile properties with time, demonstrating that these materials exceed expectations for typical municipal solid waste (MSW) facilities. However, interest in the performance of geomembranes for the disposal of low-level (LLW) and intermediate-level (ILW) radioactive waste landfills poses additional challenges. Many of these facilities use probabilistic models of long-term performance in terms of contaminant transport and exposure to make design decisions. However, current models have relatively little information quantifying the potential for leakage through the geomembrane that directly consider the change in material properties with time. Studies of the various mechanical modes of deformation and rupture for polyethylene sheet allow for this quantification. An example of this approach illustrates how the consideration of crack development in final cover geomembranes can be adapted for use in simulations of long-term landfill system performance suitable for LLW/ILW facility performance assessments.
Geomembrane Cracking and Final Cover Performance
Foye, Kevin (author) / Soong, Te-Yang (author)
Geotechnical Frontiers 2017 ; 2017 ; Orlando, Florida
Geotechnical Frontiers 2017 ; 97-106
2017-03-30
Conference paper
Electronic Resource
English
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