Technical Information

For typical building cladding panel construction, GRC castings are manufactured by spraying a series of layers of polymer-concrete material with glass fiber reinforcement in a female mould. An engineered steel frame is bonded to the casting, allowing the panels to be installed to a building's structural steel or concrete slab by either bolt fixing or welding.

Typical Range of GRC Properties

Property28 daysAged
Density (Dry) 20 KN/m3 20 KN/m3
Compressive Strength 70 MPa 70 MPa
Limit of Propotionality 8 MPa 9 MPa
Modulus of Rupture 22 MPa 11 MPa
Tensile Yield Strength 6 MPa 6 MPa
Tensile Ultimate Strength 9 MPa 6 MPa
Shear Strength 9 MPa 6 MPa
Modulus of Elasticity 17,000 MPa 20,000 MPa
Coef. of Thermal Expansion 1.5 x 10-6 / o C MPa 1.5 x 10-6 / o C MPa
Shrinkage / Swelling 1 mm/m 1 mm/m
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