Geo-Form EPDM Rubber Alloy vs. HDPE Geomembrane Lining
In the absence of a better option, HDPE has been specified in applications where “high” chemical resistance is not required. Now, with many years of proven performance, Geo-Form offers an alternate solution. The chart below shows the advantages of EPDM Rubber Alloy lining when compared to HDPE.
"HDPE provides good chemical resistance and toughness, but is a semi-crystalline material with a relatively low ductility that has difficulties conforming to uneven subgrades and movement. Thicker HDPE liners are also more rigid and difficult to handle and weld."
Higher Ground Consulting Report – “Performance Analysis of Engineered Liner Systems Used to Store Saline Fluids in the Canadian Oil and Gas Industry: Physical and Environmental Influences” prepared for Petroleum Technology Alliance Canada
|DUCTILE||Stretch and mold to irregular sub-grade|
Conform to sub-grade settlement without rupture
|SUPPLE||Soft and flexible, bends easily without fracture|
Adaptable or responsive to new situations
|HEAVY||Specific gravity greater than 1.0|
Will not float or require ballast
|CORE THICKNESS||Same as overall thickness|
No surface profiles to protect from crazing
|Minimal subgrade preparation possible|
|Tolerant of limited rocks & protrusions|
|Foot traffic & light rubber-tired vehicles okay|
|Secure welds at low temperatures (10°F)|
|Welds may be quality inspected visually|
|Minimum training of welder operators|
|May be installed by local workers w/o factory training|
|Concerns of Failure Caused By:||Geo-Form||HPDE|
|Stress cracking and crazing|
|Weld failures caused by cold shock|
|Improper tension during placement|
|Worker handling and foot traffic damage|
|Anchor pull out & splice failure due to shrinking|
|Uplift by wind in reservoirs|
|Hippos and whales in reservoirs|
|Damage caused by adding ballast|
Is the Geo-Form Geomembrane Right for Your Project?
There are many variables to consider when determining if a lining is resistant to a chemical, solvent or petroleum product; life expectancy, temperatures and the level of concentration. Please contact us with the specific chemical resistance requirements of the project and we will advise if Geo-Form should be considered.
All Geo-Form Geomembrane Products are Custom Made and Built to Last
Because Geo-Form is made of weather and U/V resistant polymers, it's an ideal solution for any lining project where long life expectancy is required.
All Our Liners are Made 100% in the U.S.A.
Our Midwest Manufacturing Facility is ISO Certified
We Serve Clients All Over the World