DynaPlast® GRG XL
DynaPlast® GRG XL is a low expansion gypsum cement formulated for glass fiber reinforced gypsum (GFRG) fabricators. The cement is an alpha hemihydrate gypsum-based material that meets the “Standard Specifications for Glass Fiber Reinforced Gypsum Composites” as outlined in ASTM C-1355.
DynaPlast® GRG XL is a high-strength, fire retardant, dense gypsum cement that can be used with glass fibers or glass mat for light-weight thin cast architectural pieces. The product can be used in spray-up applications using chopped E glass fibers or can be used in hand layup applications with continuous strand glass fiber mats specifically designed to insure proper wet-out with the gypsum slurry.
DynaPlast® GRG XL is white in color. Applications include column covers, decorative interior architectural molded panel products, fireplace mantels and surrounds and other thin-walled glass reinforced cast pieces.
TYPICAL PHYSICAL PROPERTIES:
- Use Consistency – 33-35 cc/100g
- Set Time – 45 – 65 minutes
- Maximum Expansion (%) – 0.175%
- -100 Mesh – 99.8 – 100% passing
- Compressive Strength – 7,000 psi
GENERAL MIXING INSTRUCTIONS:
When mixing with 50% by weight using fine sand, add 4cc/100 grams of water to the mix. It is not recommended to exceed the 50% upper limit on aggregate addition because excess aggregate can settle out of the slurry.
Products must be mixed with high-shear mixing equipment.