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FORTA-FERRO®FAQ's

Frequently Asked Questions:


FORTA-FERRO® (which means "Strong as Steel") fibers are non-corrosive, non-magnetic and 100% alkali proof. In comparison testing vs. three types of steel fibers it was determined that it requires 1 pound of FORTA-FERRO® fiber to offer equivalent A.R.S. (Average Residual Strength) values to that of 10 pounds of steel fibers. This one-to-ten dosage ratio offers tremendous advantages for FORTA-FERRO® fibers in the batching, pumping, placing and finishing processes. Contact FORTA® for comparative test results.
In most situations, FORTA-FERRO® can safely and reliably replace all non-structural steel in slab-on-grade concrete. Factors such as requirements from rack or point load, average daily traffic, slab thickness and sub-base must be considered. As always, it is best to contact the FORTA® Engineering Department before eliminating steel reinforcement.
FORTA-FERRO® fibers are added at the concrete batch plant and require 4-5 minutes at normal mixing speed for proper distribution. They will reduce visual slump approximately 3" at the 7.5 lb. dosage, and will typically require a super-plasticizer or mid-range water reducer to provide flowability for placement. Using excessive mix water will naturally reduce concrete strength and create bleed water that will make the surface less durable. Good concrete finishing practices should be exercised.
There are many factors to take into consideration. Steel fibers typically require special conveyors or extra man-hours to add them due to the high dosage per cubic yard. Steel mats or rebar are very labor intensive to place on chairs and supports and to tie properly. The 3-dimensional FORTA-FERRO® fibers can be placed with a laser-screed and can eliminate the need for a concrete pump in these situations. The FORTA-FERRO® benefits can reduce labor hours and placement time, providing significant job savings.