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Are all fibers used in concrete the same?

Q. Are all fibers used in concrete the same?

 

A. No, fibers used for concrete reinforcement are diverse in their material composition, geometry (shape), and form. Fibers can vary in shape—such as straight, hooked, twisted, crimped, and embossed—and in form, including monofilament and fibrillated types.

 

The material and geometry of a fiber play pivotal roles in determining its performance in concrete. However, the selection of a fiber should not be based solely on its material or geometry in isolation. The true value of a fiber lies in its overall performance for a specific application, considering not only its mechanical properties like durability, toughness, and post-crack behavior but also its effects on the workability, pumpability, and finishability of the concrete mix.

 

References: ACI 544.1R

Topics in Concrete: Concrete Fundamentals, Fiber Reinforced Concrete