- XS Backer provides the maximum GFRC strength to any piece
- Used together with the XS Face mix to create incredibly strong pieces
- Clay-like consistency allows for easy hand-packing on both horizontal and vertical surfaces
GFRC Concrete Casting Backer Bag Mix
Xtreme Series Backer Mix -This backer mix is a high fiber, hybrid GFRC, dual component pre-blended bag mix. This high early strength, an intense load of Glass AR fiber adds immediate structural integrity to any precast concrete such as Xtreme PreCast, Xtreme GFRC Face, and in projects when necessary even Xtreme Terrazo. Use of Xtreme Backer Mix is ideal for applications that require longer, thinner, and reduction of weight. SureCrete’s hybrid GFRC formulas are ideal for countertops, fireplace pieces, architectural panels, precast rocks, and thousands of precast items.
General Details
Manufactures Data
- Tech Data Sheets
- GFRC Backer Bag SDS Sheet
- GFRC Backer Modifier SDS Sheet
- Standard Color Chart
- XS-Color Chart
SPECIFICATIONS AND PROPERTIES OF SURECRETE’S GFRC BACKER MIX FOR REINFORCING CAST CONCRETED – XS-BACKER
Coverage: 50 lb bag = approx 9.8 square foot @ 1/2″, 7.2 square foot @ 3/4″ or roughly 0.43 cubic foot.
VOC Rating: 0 g/L
Shelf Life: 1 year in original unopened container
Mixing Ratio: 1 gal XS Modifier to 50 lb XS Precast (up to 16 oz add’l water)
Density: 120 lbs/cubic foot
Comprehensive Strength: ASTM C-170: 10,030 PSI @ 28 days
Flexural Strength: ASTM C-880: 1,180 PSI @ 28 days