AR (Alkali Resistant) Glass Fibers, 3/4" length (18mm). Produced by Owens Corning, leading manufacturer of glass fiber containing the highest level of zirconia (to resist alkali attack from the concrete) AR Chopped fiber is a must for any GFRC backer coats, but should also be added to any concrete project- every time: From countertops to garages, driveways, patios, etc. Cem-Fil 3/4" Fiber is designed to have the same density of the sand in the concrete mix, so with proper finishing techniques the fiber will not be visible on a finished, troweled surface. For Pre-cast concrete, these 3/4" fibers will also stay away from the surface (sides and bottoms of your forms). Typical Dosage (by weight): Adding to Countertop Concrete Mixes: 2oz per 80lb concrete mix (1.2oz per 50lb concrete mix) Adding to Ready Mix (truck): 1lb to 8lbs, per yard. Adding to GFRC Backer Coats: 1.6lbs per 50lbs GFRC mix. Maximum Loading/Dosage: 3% of the total concrete mix weight When mixing these fibers into standard Concrete Countertop wet-cast concrete batches, a standard mix ratio is 2 oz. Fibers, by weight, to an 80 lb. bag of concrete. Using this ratio, a 1 lb. bag of Fiber will treat about 8 bags of concrete mix. When mixing in Ready Mixed Concrete (trucks), the Fiber can added into the truck on the job site, right before starting the pour).

• Date First Available ‏ : ‎ May 11, 2022
• Manufacturer ‏ : ‎ Owens Corning