Strength & Durability
UltraFiber 500 has been proven to reduce plastic shrinkage cracking, improve durability, and decrease the effects of freeze/thaw.
Cellulose is hydrophilic. This means that, unlike polypropylene and other synthetic fibers, UltraFiber 500 absorbs water and improves concrete/hydration. This makes for stronger concrete with less internal micro-cracking.
UltraFiber 500 meets ASTM and ICC standards for alkali resistance. The UltraFiber 500 fibers will not deteriorate or lose strength when exposed to high alkali environments.