Glass Reinforced Plastic (GRP)

Last Updated: May 19, 2017

Definition - What does Glass Reinforced Plastic (GRP) mean?

Glass reinforced plastic (GRP) is a polymer material that includes glass fiber (fiberglass). Glass reinforced plastic combines the structure of fiberglass with the plasticity of various resins. These may include epoxy, vinyl ester, polyester, polyurethane, or polypropylene. GRP is an excellent composite for the manufacture of pipes used in trenchless construction.

GRP is also known as glass fiber reinforced plastic (GFRP) or fiberglass reinforced plastic (FRP).

Trenchlesspedia explains Glass Reinforced Plastic (GRP)

Glass reinforced plastic (GRP) pipes were first introduced for wide use in 1948 as an alternative to steel or stainless steel. In GRP, fiberglass combines with certain thermosetting resins to strengthen the composite material and may also contain aggregate granular material. GRP pipes can be utilized in a wide variety of situations and provide good electrical, acid and chemical resistance. This material can also withstand high pressure conditions. There are a wide range of possible profiles for GRP pipe products.

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