Fiberglass Reinforced Epoxy (FRE)

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Definition - What does Fiberglass Reinforced Epoxy (FRE) mean?

Fiberglass reinforced epoxy is a composite construction material consisting of a polymer matrix reinforced with glass fibers. It is cheaper than other fiber reinforced polymers (such as carbon) and is stronger by weight than many metals. Some common applications for this material include aircrafts, automobiles, boats, septic tanks and water tanks.

In trenchless construction, fiberglass reinforced epoxy is typically used as an alternative to other materials such as carbon steel, stainless steel, PVC and HDPE for the construction of well casings.

Fiberglass reinforced epoxy is also known as fiber-reinforced plastic, fiber-reinforced polymer or simply fiberglass

Trenchlesspedia explains Fiberglass Reinforced Epoxy (FRE)

Fiberglass reinforced epoxy is used in a variety of applications due to its favorable durability, high tensile strength, chemical resistance and relative cost-effectiveness. Other additional benefits include lighter material weight and easier installation.

Fiberglass reinforced epoxy well casings offer several advantages over other traditional casing materials. They are commonly used in water well applications where low-cost corrosion-resistant well solutions are required.

Despite its advantages over steel, PVC, and HDPE, fiberglass reinforced epoxy casings may not be ideal for every situation. Some disadvantages include:

  • May incur a higher cost than other materials
  • May not be as easily available as alternative construction materials
  • Requires special handling
  • Less resistant to hydraulic collapse
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