Additional comment added to GMA Techline answer

August 1st, 2012 / By: / From Our Readers

Editor’s Note: The following question was addressed in the GMA Techline answers from Bob Koerner (Geosynthetics, June 2012). A further comment has now been added.

Question

Can you please guide me to suppliers of high-temp, approx. 215 F (100 C) liners? Also, the liner should be able to handle up to 200,000ppm TDS (total dissolved solids) of salts. I am looking for HDPE or similar liner.

Mukesh
Australia

Reply

Wow, what a question! My answer might not be to your liking but here it is: The highest that geomembrane manufacturers recommend for usage is between 150–170 F. Even then, you will not get a 20-year warranty since at these high temperatures the degradation mechanisms (oxidation mainly) are most active. Of course, different resins behave differently and you might inquire [with manufacturers] about EPDM (ethlylene propylene diene monomer), which is a thermoset polymer.

Robert M. Koerner, Ph.D., P.E.
NAE

Comment

Bob,
We did some testing on various liners for the company that Mukesh works with and developed expected design life periods for the different materials. We agree 20 years design life at 100 deg C is unlikely to be achieved with high-density polyethylene. EDPM is a significantly higher cost liner.

Fred Gassner
Golder Associates
Australia

Join the discussion

To post your thoughts on these comments, fill out the comment form on the bottom of the article “High-temp resilient liner” or send your comments to editor Ron Bygness at rwbygness@ifai.com.

Comments and letters can contain opinions of individuals who are writing and do not necessarily reflect the views of Geosynthetics magazine or the Industrial Fabrics Association International.

Leave a Reply

Your email address will not be published. Required fields are marked *

Comments are moderated and will show up after being approved.