When synthetic fibers first made a large-scale entry into the concrete construction market in the 1980s, a question arose that continues today: What are the comparative benefits of using these fibers or welded wire fabric (WWF), especially in flatwork? How much do fibers help in preventing cracking in slabs?

To get the viewpoint of experts familiar with the performance of these products, Concrete Construction talked with concrete consultants Ross Martin and George Hoff. Martin has spent much of his career in the ready-mixed concrete and concrete construction industries and is especially knowledgeable about the construction of high-quality industrial floors. Hoff has studied the effects of both steel and synthetic fibers, especially in high-performance concrete.