Q. Can Nycon fibers be used to replace welded-wire fabric (WWF) in plain concrete slabs-on-ground applications?
Yes, since the early 1980's engineers have accepted the use of synthetic fibers in lieu of conventional steel as secondary/temperature-shrinkage reinforcement (often called welded-wire fabric, WWF, or wire mesh).

The purpose of secondary reinforcement is to hold concrete together after it cracks. In the case of WWF, this will only happen if it is placed within the cross-section and is not left laying on the subgrade. In all of WRI's (Wire Reinforcing Institute) literature it is specifically noted the WWF must be on chairs to perform properly. Placed properly or improperly the cost in terms of time and money is expensive.

In contrast, Nycon fibers are easy to introduce, uniformly distributed and reduce on-the-job time for the contractor. Nycon fibers perform better than WWF. Nycon fibers modify the micro/macro cracking of the concrete while enhancing the soundness of the concrete by reducing permeability and greatly improving impact resistance, surface abrasion resistance and toughness.

Nycon fibers provide a proactive approach to minimizing and controlling concrete's inherent cracking. Nycon fibers are a cost effective alternative to WWF while contributing far more to the soundness and long-term durability of the concrete.

For a more detailed look at this subject, see Concrete Reinforcement: Nycon Fiber vs. Welded-wire fabric. (Nycon, Inc. form #020199).

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