What Does Glass Fiber Reinforced Concrete (GFRC) Mean?
Glass fiber reinforced concrete (GFRC) is a composite material with a wide variety of construction applications. GFRC is often used in sewer linings, panels, drainage channels, pads and may be used in the construction or rehabilitation of pipes or other conduits.
Glass fiber reinforced concrete is more commonly known in the United Kingdom and other parts of the world as glassfibre reinforced concrete (GRC).
Trenchlesspedia Explains Glass Fiber Reinforced Concrete (GFRC)
Throughout much of the 1900’s, asbestos fibers were widely used in both commercial and residential concrete materials. In the 1960’s, concrete makers turned to steel, glass, and synthetic fibers to reinforce their products. However, it became clear that glass fiber reinforcement was at a distinct disadvantage.
The silica that forms glass is vulnerable in an alkaline environment. Any concrete made of glass was not as durable because of alkali-silica reactivity. The development of alkali-resistant (AR) glass fibers by Owens-Corning and by Nippon Electric Glass (NEG) in the 1970’s made the use of GFRC more widespread.
The ingredients of a GFRC mix should be carefully selected. High quality components such as Portland cement, fine sand, clear and potable water, an acrylic polymer and alkali-resistant (AR) glass fibers will ensure the best results. The strength, toughness and durability of GFRC make it an excellent candidate for use in trenchless construction.