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FGI Live Panel Discussion: Expected Longevity & Applications Of Exposed Vs. Unexposed Geomembranes – July 12

News | July 11, 2022 | By:

The Fabricated Geomembrane Institute will present a live panel discussion on Tuesday, July 12 from 1 to 2 p.m. EDT. This discussion will assemble three industry leaders to answer questions about the use of geomembranes in exposed and unexposed applications and their longevity or durability. In particular, the longevity of different geomembranes in exposed and unexposed applications will be discussed and the testing that should be used to assess the remaining service life/longevity.

The panel will discuss how the remaining service life should be evaluated and what criterion or criteria should be used to assess whether it is still performing as designed. Points to consider include: Is there less than 50% loss of an index property; passing an electrical leak location survey; no discoloration; leakage below a predefined leakage rate; no cracking, or some other parameter; and given the importance of longevity to owners, should warranties be encouraged and if so what duration?

Some of the applications that will be discussed:

  • Bottom liner systems for a range of applications, such as waste, water, and chemical containment and cover systems including floating covers for water reservoirs
  • What is the expected longevity of current geomembranes in these applications?
  • Should engineers require including test coupons to verify remaining service life, and if so, where should they be placed because some anchor trench samples have recently shown accelerated aging?

Panelists for the discussion include Prabeen Joshi, Ph.D., P.E., Layfield Group; Adam Maskal, P.E., Solmax; Doug Hilts, P.E., Hilts Consulting Group; and moderator Timothy Stark, Ph.D., P.E., University of Illinois at Urbana-Champaign. The discussion is free to industry professionals and students with 1.0 Professional Development Hour (PDH) available.

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