NRMCA ConcreteWorks 2026
Fortress Concrete Fiber is a fibrillated polypropylene micro fiber for concrete: one pound per cubic yard, added straight to the mix, controls plastic shrinkage cracking and toughens the finished concrete, certified to ASTM C1116 & ASTM C1579. It's sold and shipped by SOBX Chemicals of Graham, NC, the same family company that supplies concrete removers, truck wash and cleaning chemicals to ready-mix plants and fleets.
What to ask us about
Where it's used
Used in slab-on-grade, curbs, driveways, sidewalks, basement and garage floors
Bag sizes and dosage
1 lb and 5 lb water-soluble bags, 1.0 lb per cubic yard dosage
Shrinkage control
Controls plastic shrinkage cracking
Talk to us
Single boxes are bought straight from SOBX Chemicals. For pallet quantities, freight, or a technical question, send a note here or call.
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