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Glass Fiber Reinforced Concrete(GRC)

GRC also called GFRC is a composite of Portland cement, fine aggregate, water, acrylic co-polymer, (AR) glass fiber reinforcement and additives. The AR (alkali resistant) glass fibers reinforce the concrete, much as steel reinforcing does in conventional concrete. The glass fiber reinforcement results in a product with much higher flexural and tensile strengths than normal concrete, allowing its use in thin-wall casting applications.

GFRC is a lightweight, durable material that can be cast into nearly unlimited shapes, colors and textures. There are two basic processes used to fabricate GFRC – the Spray-Up process and the Premix process. The Premix process is further broken down into various production techniques

such as spray premix, cast premix, pultrusion and hand lay-up. GFRC is primarily used as an exterior façade or cladding material for both new construction and for recladding or restoration of existing building facades. For these applications, the Spray-Up process is generally used and the GFRC “skin” is panelized on a steel stud frame and weighs 20-25 lbs. per square foot (97-122 kg/sq.m) Due to its extreme flexibility in design and function, it is also used extensively in applications not requiring a steel stud frame and is generally produced using one of the Premix processes. These applications include architectural ornamentation (column covers, cornices, window and door surrounds, etc.), terra cotta restoration and replacement, fireplace surrounds, concrete countertops, faux rocks and planters. Without the frame, GFRC will weigh 7-10 lbs. per square foot (34- 48kg/sq.m)



• Highly durable and safe

• Design freedom since GFRC is able to be molded into almost any shape and color/texture

• Requires very low maintenance

• Installation is quick and cost effective

• Weather and fire resistant

• Economical and lighter than precast concrete

• Energy efficient

technical parameters (28 days)


Common installation methods


Surface effect


GRC Projects


About GRC

ASTM- (formally known as the International Association of Testing Materials IATM) is an organization of professionals who create international standards covering materials, construction and testing methods for materials.
ASTM---American Society for Testing and Materials PCI-(precast/prestressed concrete intitute) have developed the recommended practices, procedures and standard for GRC
Composites Fabricators Association- A trade association formed in 1979 to provide education and support for composites fabricators in the successful operation of their businesses. The membership is primarily corporate, but also includes consultants and academics. Although CFA covers the entire composites industry, its focus is on fiberglass (GRP) composites.