Fiber-reinforced concrete (FRC) is not a new concept. Since biblical times fibers have been used in cementing construction materials in the form of straw and horsehair. Today, there are a large variety of fiber options for reinforcing concrete, available in the marketplace. Further your knowledge of fiber reinforced concrete by understanding the differences and applications for micro and macro fibers usage. Learn about the different fiber types, in each category, in relationship to fiber performance, testing, and calculations. Gain knowledge on fiber applications including slab ground, composite metal deck, overlays, and explosive spalling of concrete.