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Glass fiber reinforced gypsum board (GFRG) is a composite material consisting of alpha gypsum cement and water, reinforced with glass fibers, ideal for an economical, lightweight and durable alternative to traditional gypsum.
Glass fiber reinforced gypsum board (GFRG) is a construction panel product made from calcined gypsum, plaster. Produced under strictly controlled conditions, the panels are 124 mm thick, 12 m long and 3 m high, contain cavities and can be unfilled, partially filled or fully filled with reinforced concrete, depending on structural requirements. Experiments and studies in Australia, China and India have shown that GFRG panels, properly filled with plain reinforced concrete, have considerable strength and can be used not only as load-bearing elements but also as shear walls, capable of resisting lateral loads caused by earthquakes and wind.GFRG panels can also be used as infill (non-load-bearing) in combination with columns and beams of RCC frames (conventional frame construction for multi-story buildings). There is no restriction on the number of storeys, and the micro-beams and RCC mortar (acting on T-beams) can be used as floor/roof slabs.
Matrix | Glass Fiber Reinforced Gypsum (GFRG) Panel |
Glass Fiber | 5-6% weight, Type E 38% by volume |
Thickness | 3/16” Nominal |
Flexural Strength | 10, 660 PSI |
Modulus of Elasticity | 1.43 X 10^6 PSI |
Ultimate Tensile Strength | 2, 250 PSI (ASTM D638) |
Modulus of Elasticity | 3.87 X 10^6 PSI |
Flammability (ASTM E84-81A): | Flame Spread Index -0 Smoke Developed Value -0 Fuel Contributed -0 |
Impact Strength (ASTM D256) | 12.9 ft. lb/in |
Thermal Conductivity (ASTM C518) | “C” of 1.56 BTU/hr. ft^2 0F |
Barcol Hardness (ASTM D2583) | 64 |
Rockwell Hardness (ASTM D785) | 98.8 ‘M’ Scale |
Density | 106.4 lbs/ft. ^3 |
Thermal Coefficient of Expansion (ASTM D696) | 5.4X10^6 in. /in/ /0f |
Compressive Strength (ASTM C39/C109) | 7, 080 PSI |
Water Resistance (ASTM C473) | 12.5% Weight Gain |
Humidified Deflection (ASTM C473) | 1/8” |
Toxicity NBS/U.S. Testing | Non-Toxic |
Glass Fiber Reinforced Gypsum (GFRG or GRG) is the most economical Formglas material and is used in a range of architectural applications such as ceilings, column covers, decorative wall panels, domes, bulkheads, light coves, and more.
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