Synthetic fibers for concrete have been used for many years and are available in many types.  These include micro fibers for reducing plastic shrinkage cracks or macro fibers which can replace welded wire fabric and some light reinforcing steel.  The most widely accepted synthetic fibers are polypropylene and they are alkali resistant, non-absorptive and non-corrosive. Fibers work by protecting the concrete from stresses, which can cause cracking while the concrete is most vulnerable, usually during the first 24 hours. 

Micro fibers are available in two types: monofilament and collated.  Both are used to reduce plastic shrinkage cracking and improve durability.  Applications include slabs-on-grade, elevated slabs, pavements, overlays, sloped walls, pools, shotcrete, and stucco.

Macro fibers are available in  three different types: polypropylene, steel and polypropylene, and steel blends. They are typically used to replace welded wire fabric and some light steel.  

Controlling cracks with Fibermesh 650

Click here to learn more about the "True Costs of Welded Wire Fabric (WWF)."

Contact one of our Regional Offices for more information and to determine which fiber is right for your next project.