Known as our most popular fibre on the market, FORTA-FERRO^® is used to reduce plastic and hardened concrete shrinkage, improve impact strength, and increase fatigue resistance and concrete toughness. This extra heavy-duty fibre also offers maximum long-term durability, structural enhancements, and effective secondary temperature crack control.

This patented fiber is actually a blend of two fibers:

1. A standard fibrillated polypropylene fiber to reduce and control shrinkage and temperature cracking.
2. A very heavy-duty twisted-bundle monofilament fiber made of a strong synthetic copolymer, to increase load-transfer and post-crack performance. This pre-blended fiber is typically used in long lengths (2-1/4″) and in high dosages (3.0 to 30 lbs. / cu. yd.) to affect a higher replacement level of reinforcing steel than standard synthetic fibers. FORTA-FERRO, which means “Strong as Steel”, is also extremely user-friendly, having gained a reputation as the best mixing and finishing fiber of its kind in the industry.